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< ? php
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/**
* Main WordPress API
*
* @ package WordPress
*/
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/**
* Converts MySQL DATETIME field to user specified date format .
*
* If $dateformatstring has 'G' value , then gmmktime () function will be used to
* make the time . If $dateformatstring is set to 'U' , then mktime () function
* will be used to make the time .
*
* The $translate will only be used , if it is set to true and it is by default
* and if the $wp_locale object has the month and weekday set .
*
* @ since 0.71
*
* @ param string $dateformatstring Either 'G' , 'U' , or php date format .
* @ param string $mysqlstring Time from mysql DATETIME field .
* @ param bool $translate Optional . Default is true . Will switch format to locale .
* @ return string Date formated by $dateformatstring or locale ( if available ) .
*/
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function mysql2date ( $dateformatstring , $mysqlstring , $translate = true ) {
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$m = $mysqlstring ;
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if ( empty ( $m ) )
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return false ;
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if ( 'G' == $dateformatstring ) {
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return strtotime ( $m . ' +0000' );
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}
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$i = strtotime ( $m );
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if ( 'U' == $dateformatstring )
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return $i ;
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if ( $translate )
return date_i18n ( $dateformatstring , $i );
else
return date ( $dateformatstring , $i );
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}
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/**
* Retrieve the current time based on specified type .
*
* The 'mysql' type will return the time in the format for MySQL DATETIME field .
* The 'timestamp' type will return the current timestamp .
*
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* If $gmt is set to either '1' or 'true' , then both types will use GMT time .
* if $gmt is false , the output is adjusted with the GMT offset in the WordPress option .
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*
* @ since 1.0 . 0
*
* @ param string $type Either 'mysql' or 'timestamp' .
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* @ param int | bool $gmt Optional . Whether to use GMT timezone . Default is false .
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* @ return int | string String if $type is 'gmt' , int if $type is 'timestamp' .
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*/
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function current_time ( $type , $gmt = 0 ) {
switch ( $type ) {
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case 'mysql' :
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return ( $gmt ) ? gmdate ( 'Y-m-d H:i:s' ) : gmdate ( 'Y-m-d H:i:s' , ( time () + ( get_option ( 'gmt_offset' ) * 3600 ) ) );
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break ;
case 'timestamp' :
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return ( $gmt ) ? time () : time () + ( get_option ( 'gmt_offset' ) * 3600 );
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break ;
}
}
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/**
* Retrieve the date in localized format , based on timestamp .
*
* If the locale specifies the locale month and weekday , then the locale will
* take over the format for the date . If it isn ' t , then the date format string
* will be used instead .
*
* @ since 0.71
*
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* @ param string $dateformatstring Format to display the date .
* @ param int $unixtimestamp Optional . Unix timestamp .
* @ param bool $gmt Optional , default is false . Whether to convert to GMT for time .
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* @ return string The date , translated if locale specifies it .
*/
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function date_i18n ( $dateformatstring , $unixtimestamp = false , $gmt = false ) {
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global $wp_locale ;
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$i = $unixtimestamp ;
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// Sanity check for PHP 5.1.0-
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if ( false === $i || intval ( $i ) < 0 ) {
if ( ! $gmt )
$i = current_time ( 'timestamp' );
else
$i = time ();
// we should not let date() interfere with our
// specially computed timestamp
$gmt = true ;
}
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// store original value for language with untypical grammars
// see http://core.trac.wordpress.org/ticket/9396
$req_format = $dateformatstring ;
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$datefunc = $gmt ? 'gmdate' : 'date' ;
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if ( ( ! empty ( $wp_locale -> month ) ) && ( ! empty ( $wp_locale -> weekday ) ) ) {
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$datemonth = $wp_locale -> get_month ( $datefunc ( 'm' , $i ) );
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$datemonth_abbrev = $wp_locale -> get_month_abbrev ( $datemonth );
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$dateweekday = $wp_locale -> get_weekday ( $datefunc ( 'w' , $i ) );
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$dateweekday_abbrev = $wp_locale -> get_weekday_abbrev ( $dateweekday );
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$datemeridiem = $wp_locale -> get_meridiem ( $datefunc ( 'a' , $i ) );
$datemeridiem_capital = $wp_locale -> get_meridiem ( $datefunc ( 'A' , $i ) );
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$dateformatstring = ' ' . $dateformatstring ;
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$dateformatstring = preg_replace ( " /([^ \\ \ ])D/ " , " \\ 1 " . backslashit ( $dateweekday_abbrev ), $dateformatstring );
$dateformatstring = preg_replace ( " /([^ \\ \ ])F/ " , " \\ 1 " . backslashit ( $datemonth ), $dateformatstring );
$dateformatstring = preg_replace ( " /([^ \\ \ ])l/ " , " \\ 1 " . backslashit ( $dateweekday ), $dateformatstring );
$dateformatstring = preg_replace ( " /([^ \\ \ ])M/ " , " \\ 1 " . backslashit ( $datemonth_abbrev ), $dateformatstring );
$dateformatstring = preg_replace ( " /([^ \\ \ ])a/ " , " \\ 1 " . backslashit ( $datemeridiem ), $dateformatstring );
$dateformatstring = preg_replace ( " /([^ \\ \ ])A/ " , " \\ 1 " . backslashit ( $datemeridiem_capital ), $dateformatstring );
$dateformatstring = substr ( $dateformatstring , 1 , strlen ( $dateformatstring ) - 1 );
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}
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$j = @ $datefunc ( $dateformatstring , $i );
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// allow plugins to redo this entirely for languages with untypical grammars
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$j = apply_filters ( 'date_i18n' , $j , $req_format , $i , $gmt );
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return $j ;
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}
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/**
* Convert number to format based on the locale .
*
* @ since 2.3 . 0
*
* @ param mixed $number The number to convert based on locale .
* @ param int $decimals Precision of the number of decimal places .
* @ return string Converted number in string format .
*/
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function number_format_i18n ( $number , $decimals = null ) {
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global $wp_locale ;
// let the user override the precision only
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$decimals = ( is_null ( $decimals ) ) ? $wp_locale -> number_format [ 'decimals' ] : intval ( $decimals );
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$num = number_format ( $number , $decimals , $wp_locale -> number_format [ 'decimal_point' ], $wp_locale -> number_format [ 'thousands_sep' ] );
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// let the user translate digits from latin to localized language
return apply_filters ( 'number_format_i18n' , $num );
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}
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/**
* Convert number of bytes largest unit bytes will fit into .
*
* It is easier to read 1 kB than 1024 bytes and 1 MB than 1048576 bytes . Converts
* number of bytes to human readable number by taking the number of that unit
* that the bytes will go into it . Supports TB value .
*
* Please note that integers in PHP are limited to 32 bits , unless they are on
* 64 bit architecture , then they have 64 bit size . If you need to place the
* larger size then what PHP integer type will hold , then use a string . It will
* be converted to a double , which should always have 64 bit length .
*
* Technically the correct unit names for powers of 1024 are KiB , MiB etc .
* @ link http :// en . wikipedia . org / wiki / Byte
*
* @ since 2.3 . 0
*
* @ param int | string $bytes Number of bytes . Note max integer size for integers .
* @ param int $decimals Precision of number of decimal places .
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* @ return bool | string False on failure . Number string on success .
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*/
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function size_format ( $bytes , $decimals = null ) {
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$quant = array (
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// ========================= Origin ====
'TB' => 1099511627776 , // pow( 1024, 4)
'GB' => 1073741824 , // pow( 1024, 3)
'MB' => 1048576 , // pow( 1024, 2)
'kB' => 1024 , // pow( 1024, 1)
'B ' => 1 , // pow( 1024, 0)
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);
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foreach ( $quant as $unit => $mag )
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if ( doubleval ( $bytes ) >= $mag )
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return number_format_i18n ( $bytes / $mag , $decimals ) . ' ' . $unit ;
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return false ;
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}
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/**
* Get the week start and end from the datetime or date string from mysql .
*
* @ since 0.71
*
* @ param string $mysqlstring Date or datetime field type from mysql .
* @ param int $start_of_week Optional . Start of the week as an integer .
* @ return array Keys are 'start' and 'end' .
*/
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function get_weekstartend ( $mysqlstring , $start_of_week = '' ) {
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$my = substr ( $mysqlstring , 0 , 4 ); // Mysql string Year
$mm = substr ( $mysqlstring , 8 , 2 ); // Mysql string Month
$md = substr ( $mysqlstring , 5 , 2 ); // Mysql string day
$day = mktime ( 0 , 0 , 0 , $md , $mm , $my ); // The timestamp for mysqlstring day.
$weekday = date ( 'w' , $day ); // The day of the week from the timestamp
$i = 86400 ; // One day
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if ( ! is_numeric ( $start_of_week ) )
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$start_of_week = get_option ( 'start_of_week' );
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if ( $weekday < $start_of_week )
$weekday = 7 - $start_of_week - $weekday ;
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while ( $weekday > $start_of_week ) {
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$weekday = date ( 'w' , $day );
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if ( $weekday < $start_of_week )
$weekday = 7 - $start_of_week - $weekday ;
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$day -= 86400 ;
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$i = 0 ;
}
$week [ 'start' ] = $day + 86400 - $i ;
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$week [ 'end' ] = $week [ 'start' ] + 604799 ;
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return $week ;
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}
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/**
* Unserialize value only if it was serialized .
*
* @ since 2.0 . 0
*
* @ param string $original Maybe unserialized original , if is needed .
* @ return mixed Unserialized data can be any type .
*/
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function maybe_unserialize ( $original ) {
if ( is_serialized ( $original ) ) // don't attempt to unserialize data that wasn't serialized going in
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return @ unserialize ( $original );
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return $original ;
}
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/**
* Check value to find if it was serialized .
*
* If $data is not an string , then returned value will always be false .
* Serialized data is always a string .
*
* @ since 2.0 . 5
*
* @ param mixed $data Value to check to see if was serialized .
* @ return bool False if not serialized and true if it was .
*/
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function is_serialized ( $data ) {
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// if it isn't a string, it isn't serialized
if ( ! is_string ( $data ) )
return false ;
$data = trim ( $data );
if ( 'N;' == $data )
return true ;
if ( ! preg_match ( '/^([adObis]):/' , $data , $badions ) )
return false ;
switch ( $badions [ 1 ] ) {
case 'a' :
case 'O' :
case 's' :
if ( preg_match ( " /^ { $badions [ 1 ] } :[0-9]+:.*[;}] \$ /s " , $data ) )
return true ;
break ;
case 'b' :
case 'i' :
case 'd' :
if ( preg_match ( " /^ { $badions [ 1 ] } :[0-9.E-]+; \$ / " , $data ) )
return true ;
break ;
}
return false ;
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}
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/**
* Check whether serialized data is of string type .
*
* @ since 2.0 . 5
*
* @ param mixed $data Serialized data
* @ return bool False if not a serialized string , true if it is .
*/
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function is_serialized_string ( $data ) {
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// if it isn't a string, it isn't a serialized string
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if ( ! is_string ( $data ) )
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return false ;
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$data = trim ( $data );
if ( preg_match ( '/^s:[0-9]+:.*;$/s' , $data ) ) // this should fetch all serialized strings
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return true ;
return false ;
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}
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/**
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* Retrieve option value based on name of option .
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*
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* If the option does not exist or does not have a value , then the return value
* will be false . This is useful to check whether you need to install an option
* and is commonly used during installation of plugin options and to test
* whether upgrading is required .
*
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* If the option was serialized then it will be unserialized when it is returned .
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*
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* @ since 1.5 . 0
* @ package WordPress
* @ subpackage Option
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* @ uses apply_filters () Calls 'pre_option_$option' before checking the option .
* Any value other than false will " short-circuit " the retrieval of the option
* and return the returned value . You should not try to override special options ,
* but you will not be prevented from doing so .
* @ uses apply_filters () Calls 'option_$option' , after checking the option , with
* the option value .
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*
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* @ param string $option Name of option to retrieve . Should already be SQL - escaped
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* @ return mixed Value set for the option .
*/
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function get_option ( $option , $default = false ) {
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global $wpdb ;
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// Allow plugins to short-circuit options.
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$pre = apply_filters ( 'pre_option_' . $option , false );
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if ( false !== $pre )
return $pre ;
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// prevent non-existent options from triggering multiple queries
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if ( defined ( 'WP_INSTALLING' ) && is_multisite () ) {
$notoptions = array ();
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} else {
$notoptions = wp_cache_get ( 'notoptions' , 'options' );
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if ( isset ( $notoptions [ $option ] ) )
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return $default ;
}
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if ( ! defined ( 'WP_INSTALLING' ) ) {
$alloptions = wp_load_alloptions ();
}
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if ( isset ( $alloptions [ $option ] ) ) {
$value = $alloptions [ $option ];
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} else {
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$value = wp_cache_get ( $option , 'options' );
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if ( false === $value ) {
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if ( defined ( 'WP_INSTALLING' ) )
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$suppress = $wpdb -> suppress_errors ();
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// expected_slashed ($option)
$row = $wpdb -> get_row ( " SELECT option_value FROM $wpdb->options WHERE option_name = ' $option ' LIMIT 1 " );
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if ( defined ( 'WP_INSTALLING' ) )
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$wpdb -> suppress_errors ( $suppress );
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// Has to be get_row instead of get_var because of funkiness with 0, false, null values
if ( is_object ( $row ) ) {
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$value = $row -> option_value ;
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wp_cache_add ( $option , $value , 'options' );
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} else { // option does not exist, so we must cache its non-existence
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$notoptions [ $option ] = true ;
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wp_cache_set ( 'notoptions' , $notoptions , 'options' );
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return $default ;
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}
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}
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}
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// If home is not set use siteurl.
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if ( 'home' == $option && '' == $value )
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return get_option ( 'siteurl' );
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if ( in_array ( $option , array ( 'siteurl' , 'home' , 'category_base' , 'tag_base' ) ) )
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$value = untrailingslashit ( $value );
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return apply_filters ( 'option_' . $option , maybe_unserialize ( $value ) );
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}
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/**
* Protect WordPress special option from being modified .
*
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* Will die if $option is in protected list . Protected options are 'alloptions'
* and 'notoptions' options .
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*
* @ since 2.2 . 0
* @ package WordPress
* @ subpackage Option
*
* @ param string $option Option name .
*/
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function wp_protect_special_option ( $option ) {
$protected = array ( 'alloptions' , 'notoptions' );
if ( in_array ( $option , $protected ) )
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wp_die ( sprintf ( __ ( '%s is a protected WP option and may not be modified' ), esc_html ( $option ) ) );
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}
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/**
* Print option value after sanitizing for forms .
*
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* @ uses attr Sanitizes value .
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* @ since 1.5 . 0
* @ package WordPress
* @ subpackage Option
*
* @ param string $option Option name .
*/
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function form_option ( $option ) {
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echo esc_attr ( get_option ( $option ) );
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}
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/**
* Loads and caches all autoloaded options , if available or all options .
*
* @ since 2.2 . 0
* @ package WordPress
* @ subpackage Option
*
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* @ return array List of all options .
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*/
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function wp_load_alloptions () {
global $wpdb ;
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if ( ! defined ( 'WP_INSTALLING' ) || ! is_multisite () )
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$alloptions = wp_cache_get ( 'alloptions' , 'options' );
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else
$alloptions = false ;
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if ( ! $alloptions ) {
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$suppress = $wpdb -> suppress_errors ();
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if ( ! $alloptions_db = $wpdb -> get_results ( " SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes' " ) )
$alloptions_db = $wpdb -> get_results ( " SELECT option_name, option_value FROM $wpdb->options " );
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$wpdb -> suppress_errors ( $suppress );
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$alloptions = array ();
foreach ( ( array ) $alloptions_db as $o )
$alloptions [ $o -> option_name ] = $o -> option_value ;
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if ( ! defined ( 'WP_INSTALLING' ) || ! is_multisite () )
wp_cache_add ( 'alloptions' , $alloptions , 'options' );
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}
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return $alloptions ;
}
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/**
* Loads and caches certain often requested site options if is_multisite () and a peristent cache is not being used .
*
* @ since 3.0 . 0
* @ package WordPress
* @ subpackage Option
*
* @ param int $site_id Optional site ID for which to query the options . Defaults to the current site .
*/
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function wp_load_core_site_options ( $site_id = null ) {
global $wpdb , $_wp_using_ext_object_cache ;
if ( ! is_multisite () || $_wp_using_ext_object_cache || defined ( 'WP_INSTALLING' ) )
return ;
if ( empty ( $site_id ) )
$site_id = $wpdb -> siteid ;
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$core_options = array ( 'site_name' , 'siteurl' , 'active_sitewide_plugins' , '_site_transient_timeout_theme_roots' , '_site_transient_theme_roots' , 'site_admins' , 'dashboard_blog' , 'can_compress_scripts' );
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$core_options_in = " ' " . implode ( " ', ' " , $core_options ) . " ' " ;
$options = $wpdb -> get_results ( $wpdb -> prepare ( " SELECT meta_key, meta_value FROM $wpdb->sitemeta WHERE meta_key IN ( $core_options_in ) AND site_id = %d " , $site_id ) );
foreach ( $options as $option ) {
$key = $option -> meta_key ;
$cache_key = " { $site_id } : $key " ;
$option -> meta_value = maybe_unserialize ( $option -> meta_value );
wp_cache_set ( $cache_key , $option -> meta_value , 'site-options' );
}
}
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/**
* Update the value of an option that was already added .
*
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* You do not need to serialize values . If the value needs to be serialized , then
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* it will be serialized before it is inserted into the database . Remember ,
* resources can not be serialized or added as an option .
*
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* If the option does not exist , then the option will be added with the option
* value , but you will not be able to set whether it is autoloaded . If you want
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* to set whether an option is autoloaded , then you need to use the add_option () .
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*
* @ since 1.0 . 0
* @ package WordPress
* @ subpackage Option
*
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* @ uses apply_filters () Calls 'pre_update_option_$option' hook to allow overwriting the
* option value to be stored .
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* @ uses do_action () Calls 'update_option' hook before updating the option .
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* @ uses do_action () Calls 'update_option_$option' and 'updated_option' hooks on success .
*
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* @ param string $option Option name . Expected to not be SQL - escaped
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* @ param mixed $newvalue Option value .
* @ return bool False if value was not updated and true if value was updated .
*/
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function update_option ( $option , $newvalue ) {
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global $wpdb ;
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wp_protect_special_option ( $option );
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$safe_option = esc_sql ( $option );
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$newvalue = sanitize_option ( $option , $newvalue );
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$oldvalue = get_option ( $safe_option );
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$newvalue = apply_filters ( 'pre_update_option_' . $option , $newvalue , $oldvalue );
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// If the new and old values are the same, no need to update.
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if ( $newvalue === $oldvalue )
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return false ;
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if ( false === $oldvalue )
return add_option ( $option , $newvalue );
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$notoptions = wp_cache_get ( 'notoptions' , 'options' );
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if ( is_array ( $notoptions ) && isset ( $notoptions [ $option ] ) ) {
unset ( $notoptions [ $option ] );
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wp_cache_set ( 'notoptions' , $notoptions , 'options' );
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}
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$_newvalue = $newvalue ;
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$newvalue = maybe_serialize ( $newvalue );
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do_action ( 'update_option' , $option , $oldvalue , $newvalue ); // $newvalue may be serialized.
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if ( ! defined ( 'WP_INSTALLING' ) ) {
$alloptions = wp_load_alloptions ();
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if ( isset ( $alloptions [ $option ] ) ) {
$alloptions [ $option ] = $newvalue ;
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wp_cache_set ( 'alloptions' , $alloptions , 'options' );
} else {
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wp_cache_set ( $option , $newvalue , 'options' );
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}
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}
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$result = $wpdb -> update ( $wpdb -> options , array ( 'option_value' => $newvalue ), array ( 'option_name' => $option ) );
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if ( $result ) {
do_action ( " update_option_ { $option } " , $oldvalue , $_newvalue );
do_action ( 'updated_option' , $option , $oldvalue , $_newvalue );
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return true ;
}
return false ;
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}
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/**
* Add a new option .
*
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* You do not need to serialize values . If the value needs to be serialized , then
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* it will be serialized before it is inserted into the database . Remember ,
* resources can not be serialized or added as an option .
*
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* You can create options without values and then add values later . Does not
* check whether the option has already been added , but does check that you
* aren ' t adding a protected WordPress option . Care should be taken to not name
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* options the same as the ones which are protected and to not add options
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* that were already added .
*
* @ package WordPress
* @ subpackage Option
* @ since 1.0 . 0
* @ link http :// alex . vort - x . net / blog / Thanks Alex Stapleton
*
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* @ uses do_action () Calls 'add_option' hook before adding the option .
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* @ uses do_action () Calls 'add_option_$option' and 'added_option' hooks on success .
*
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* @ param string $option Name of option to add . Expects to NOT be SQL escaped .
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* @ param mixed $value Optional . Option value , can be anything .
* @ param mixed $deprecated Optional . Description . Not used anymore .
* @ param bool $autoload Optional . Default is enabled . Whether to load the option when WordPress starts up .
* @ return null returns when finished .
*/
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function add_option ( $option , $value = '' , $deprecated = '' , $autoload = 'yes' ) {
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if ( ! empty ( $deprecated ) )
_deprecated_argument ( __FUNCTION__ , '2.3' );
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global $wpdb ;
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wp_protect_special_option ( $option );
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$safe_option = esc_sql ( $option );
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$value = sanitize_option ( $option , $value );
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// Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query
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$notoptions = wp_cache_get ( 'notoptions' , 'options' );
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if ( ! is_array ( $notoptions ) || ! isset ( $notoptions [ $option ] ) )
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if ( false !== get_option ( $safe_option ) )
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return ;
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$value = maybe_serialize ( $value );
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$autoload = ( 'no' === $autoload ) ? 'no' : 'yes' ;
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do_action ( 'add_option' , $option , $value );
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if ( ! defined ( 'WP_INSTALLING' ) ) {
if ( 'yes' == $autoload ) {
$alloptions = wp_load_alloptions ();
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$alloptions [ $option ] = $value ;
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wp_cache_set ( 'alloptions' , $alloptions , 'options' );
} else {
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wp_cache_set ( $option , $value , 'options' );
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}
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}
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// This option exists now
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$notoptions = wp_cache_get ( 'notoptions' , 'options' ); // yes, again... we need it to be fresh
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if ( is_array ( $notoptions ) && isset ( $notoptions [ $option ] ) ) {
unset ( $notoptions [ $option ] );
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wp_cache_set ( 'notoptions' , $notoptions , 'options' );
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}
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$result = $wpdb -> query ( $wpdb -> prepare ( " INSERT INTO ` $wpdb->options ` (`option_name`, `option_value`, `autoload`) VALUES (%s, %s, %s) ON DUPLICATE KEY UPDATE `option_name` = VALUES(`option_name`), `option_value` = VALUES(`option_value`), `autoload` = VALUES(`autoload`) " , $option , $value , $autoload ) );
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if ( $result ) {
do_action ( " add_option_ { $option } " , $option , $value );
do_action ( 'added_option' , $option , $value );
return true ;
}
return false ;
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}
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/**
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* Removes option by name . Prevents removal of protected WordPress options .
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*
* @ package WordPress
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* @ subpackage Option
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* @ since 1.2 . 0
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*
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* @ uses do_action () Calls 'delete_option' hook before option is deleted .
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* @ uses do_action () Calls 'deleted_option' and 'delete_option_$option' hooks on success .
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*
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* @ param string $option Name of option to remove .
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* @ return bool True , if option is successfully deleted . False on failure .
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*/
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function delete_option ( $option ) {
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global $wpdb ;
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wp_protect_special_option ( $option );
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// Get the ID, if no ID then return
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// expected_slashed ($option)
$row = $wpdb -> get_row ( " SELECT autoload FROM $wpdb->options WHERE option_name = ' $option ' " );
if ( is_null ( $row ) )
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return false ;
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do_action ( 'delete_option' , $option );
// expected_slashed ($option)
$result = $wpdb -> query ( " DELETE FROM $wpdb->options WHERE option_name = ' $option ' " );
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if ( ! defined ( 'WP_INSTALLING' ) ) {
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if ( 'yes' == $row -> autoload ) {
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$alloptions = wp_load_alloptions ();
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if ( isset ( $alloptions [ $option ] ) ) {
unset ( $alloptions [ $option ] );
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wp_cache_set ( 'alloptions' , $alloptions , 'options' );
}
} else {
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wp_cache_delete ( $option , 'options' );
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}
}
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if ( $result ) {
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do_action ( " delete_option_ $option " , $option );
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do_action ( 'deleted_option' , $option );
return true ;
}
return false ;
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}
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/**
* Delete a transient
*
* @ since 2.8 . 0
* @ package WordPress
* @ subpackage Transient
*
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* @ uses do_action () Calls 'delete_transient_$transient' hook before transient is deleted .
* @ uses do_action () Calls 'deleted_transient' hook on success .
*
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* @ param string $transient Transient name . Expected to not be SQL - escaped
* @ return bool true if successful , false otherwise
*/
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function delete_transient ( $transient ) {
global $_wp_using_ext_object_cache ;
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do_action ( 'delete_transient_' . $transient , $transient );
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if ( $_wp_using_ext_object_cache ) {
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$result = wp_cache_delete ( $transient , 'transient' );
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} else {
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$option = '_transient_' . esc_sql ( $transient );
$result = delete_option ( $option );
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}
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if ( $result )
do_action ( 'deleted_transient' , $transient );
return $result ;
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}
/**
* Get the value of a transient
*
* If the transient does not exist or does not have a value , then the return value
* will be false .
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*
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* @ uses apply_filters () Calls 'pre_transient_$transient' hook before checking the transient .
* Any value other than false will " short-circuit " the retrieval of the transient
* and return the returned value .
* @ uses apply_filters () Calls 'transient_$option' hook , after checking the transient , with
* the transient value .
*
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* @ since 2.8 . 0
* @ package WordPress
* @ subpackage Transient
*
* @ param string $transient Transient name . Expected to not be SQL - escaped
* @ return mixed Value of transient
*/
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function get_transient ( $transient ) {
global $_wp_using_ext_object_cache ;
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$pre = apply_filters ( 'pre_transient_' . $transient , false );
if ( false !== $pre )
return $pre ;
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if ( $_wp_using_ext_object_cache ) {
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$value = wp_cache_get ( $transient , 'transient' );
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} else {
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$safe_transient = esc_sql ( $transient );
$transient_option = '_transient_' . $safe_transient ;
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if ( ! defined ( 'WP_INSTALLING' ) ) {
// If option is not in alloptions, it is not autoloaded and thus has a timeout
$alloptions = wp_load_alloptions ();
if ( ! isset ( $alloptions [ $transient_option ] ) ) {
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$transient_timeout = '_transient_timeout_' . $safe_transient ;
if ( get_option ( $transient_timeout ) < time () ) {
delete_option ( $transient_option );
delete_option ( $transient_timeout );
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return false ;
}
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}
}
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$value = get_option ( $transient_option );
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}
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return apply_filters ( 'transient_' . $transient , $value );
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}
/**
* Set / update the value of a transient
*
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* You do not need to serialize values . If the value needs to be serialized , then
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* it will be serialized before it is set .
*
* @ since 2.8 . 0
* @ package WordPress
* @ subpackage Transient
*
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* @ uses apply_filters () Calls 'pre_set_transient_$transient' hook to allow overwriting the
* transient value to be stored .
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* @ uses do_action () Calls 'set_transient_$transient' and 'setted_transient' hooks on success .
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*
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* @ param string $transient Transient name . Expected to not be SQL - escaped
* @ param mixed $value Transient value .
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* @ param int $expiration Time until expiration in seconds , default 0
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* @ return bool False if value was not set and true if value was set .
*/
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function set_transient ( $transient , $value , $expiration = 0 ) {
global $_wp_using_ext_object_cache ;
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$value = apply_filters ( 'pre_set_transient_' . $transient , $value );
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if ( $_wp_using_ext_object_cache ) {
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$result = wp_cache_set ( $transient , $value , 'transient' , $expiration );
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} else {
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$transient_timeout = '_transient_timeout_' . $transient ;
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$transient = '_transient_' . $transient ;
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$safe_transient = esc_sql ( $transient );
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if ( false === get_option ( $safe_transient ) ) {
$autoload = 'yes' ;
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if ( $expiration ) {
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$autoload = 'no' ;
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add_option ( $transient_timeout , time () + $expiration , '' , 'no' );
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}
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$result = add_option ( $transient , $value , '' , $autoload );
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} else {
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if ( $expiration )
update_option ( $transient_timeout , time () + $expiration );
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$result = update_option ( $transient , $value );
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}
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}
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if ( $result ) {
do_action ( 'set_transient_' . $transient );
do_action ( 'setted_transient' , $transient );
}
return $result ;
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}
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/**
* Saves and restores user interface settings stored in a cookie .
*
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* Checks if the current user - settings cookie is updated and stores it . When no
* cookie exists ( different browser used ), adds the last saved cookie restoring
* the settings .
*
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* @ package WordPress
* @ subpackage Option
* @ since 2.7 . 0
*/
function wp_user_settings () {
if ( ! is_admin () )
return ;
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if ( defined ( 'DOING_AJAX' ) )
return ;
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if ( ! $user = wp_get_current_user () )
return ;
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$settings = get_user_option ( 'user-settings' , $user -> ID );
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if ( isset ( $_COOKIE [ 'wp-settings-' . $user -> ID ] ) ) {
$cookie = preg_replace ( '/[^A-Za-z0-9=&_]/' , '' , $_COOKIE [ 'wp-settings-' . $user -> ID ] );
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if ( ! empty ( $cookie ) && strpos ( $cookie , '=' ) ) {
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if ( $cookie == $settings )
return ;
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$last_time = ( int ) get_user_option ( 'user-settings-time' , $user -> ID );
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$saved = isset ( $_COOKIE [ 'wp-settings-time-' . $user -> ID ]) ? preg_replace ( '/[^0-9]/' , '' , $_COOKIE [ 'wp-settings-time-' . $user -> ID ] ) : 0 ;
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if ( $saved > $last_time ) {
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update_user_option ( $user -> ID , 'user-settings' , $cookie , false );
update_user_option ( $user -> ID , 'user-settings-time' , time () - 5 , false );
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return ;
}
}
}
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setcookie ( 'wp-settings-' . $user -> ID , $settings , time () + 31536000 , SITECOOKIEPATH );
setcookie ( 'wp-settings-time-' . $user -> ID , time (), time () + 31536000 , SITECOOKIEPATH );
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$_COOKIE [ 'wp-settings-' . $user -> ID ] = $settings ;
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}
/**
* Retrieve user interface setting value based on setting name .
*
* @ package WordPress
* @ subpackage Option
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* @ since 2.7 . 0
*
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* @ param string $name The name of the setting .
* @ param string $default Optional default value to return when $name is not set .
* @ return mixed the last saved user setting or the default value / false if it doesn ' t exist .
*/
function get_user_setting ( $name , $default = false ) {
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$all = get_all_user_settings ();
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return isset ( $all [ $name ]) ? $all [ $name ] : $default ;
}
/**
* Add or update user interface setting .
*
* Both $name and $value can contain only ASCII letters , numbers and underscores .
* This function has to be used before any output has started as it calls setcookie () .
*
* @ package WordPress
* @ subpackage Option
* @ since 2.8 . 0
*
* @ param string $name The name of the setting .
* @ param string $value The value for the setting .
* @ return bool true if set successfully / false if not .
*/
function set_user_setting ( $name , $value ) {
if ( headers_sent () )
return false ;
$all = get_all_user_settings ();
$name = preg_replace ( '/[^A-Za-z0-9_]+/' , '' , $name );
if ( empty ( $name ) )
return false ;
$all [ $name ] = $value ;
return wp_set_all_user_settings ( $all );
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}
/**
* Delete user interface settings .
*
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* Deleting settings would reset them to the defaults .
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* This function has to be used before any output has started as it calls setcookie () .
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*
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* @ package WordPress
* @ subpackage Option
* @ since 2.7 . 0
*
* @ param mixed $names The name or array of names of the setting to be deleted .
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* @ return bool true if deleted successfully / false if not .
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*/
function delete_user_setting ( $names ) {
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if ( headers_sent () )
return false ;
$all = get_all_user_settings ();
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$names = ( array ) $names ;
foreach ( $names as $name ) {
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if ( isset ( $all [ $name ]) ) {
unset ( $all [ $name ]);
$deleted = true ;
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}
}
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if ( isset ( $deleted ) )
return wp_set_all_user_settings ( $all );
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return false ;
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}
/**
* Retrieve all user interface settings .
*
* @ package WordPress
* @ subpackage Option
* @ since 2.7 . 0
*
* @ return array the last saved user settings or empty array .
*/
function get_all_user_settings () {
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global $_updated_user_settings ;
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if ( ! $user = wp_get_current_user () )
return array ();
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if ( isset ( $_updated_user_settings ) && is_array ( $_updated_user_settings ) )
return $_updated_user_settings ;
$all = array ();
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if ( isset ( $_COOKIE [ 'wp-settings-' . $user -> ID ]) ) {
$cookie = preg_replace ( '/[^A-Za-z0-9=&_]/' , '' , $_COOKIE [ 'wp-settings-' . $user -> ID ] );
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if ( $cookie && strpos ( $cookie , '=' ) ) // the '=' cannot be 1st char
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parse_str ( $cookie , $all );
} else {
$option = get_user_option ( 'user-settings' , $user -> ID );
if ( $option && is_string ( $option ) )
parse_str ( $option , $all );
}
return $all ;
}
/**
* Private . Set all user interface settings .
*
* @ package WordPress
* @ subpackage Option
* @ since 2.8 . 0
*
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* @ param unknown $all
* @ return bool
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*/
function wp_set_all_user_settings ( $all ) {
global $_updated_user_settings ;
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if ( ! $user = wp_get_current_user () )
return false ;
$_updated_user_settings = $all ;
$settings = '' ;
foreach ( $all as $k => $v ) {
$v = preg_replace ( '/[^A-Za-z0-9_]+/' , '' , $v );
$settings .= $k . '=' . $v . '&' ;
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}
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$settings = rtrim ( $settings , '&' );
update_user_option ( $user -> ID , 'user-settings' , $settings , false );
update_user_option ( $user -> ID , 'user-settings-time' , time (), false );
return true ;
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}
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/**
* Delete the user settings of the current user .
*
* @ package WordPress
* @ subpackage Option
* @ since 2.7 . 0
*/
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function delete_all_user_settings () {
if ( ! $user = wp_get_current_user () )
return ;
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update_user_option ( $user -> ID , 'user-settings' , '' , false );
setcookie ( 'wp-settings-' . $user -> ID , ' ' , time () - 31536000 , SITECOOKIEPATH );
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}
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/**
* Serialize data , if needed .
*
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* @ since 2.0 . 5
*
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* @ param mixed $data Data that might be serialized .
* @ return mixed A scalar data
*/
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function maybe_serialize ( $data ) {
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if ( is_array ( $data ) || is_object ( $data ) )
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return serialize ( $data );
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if ( is_serialized ( $data ) )
return serialize ( $data );
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return $data ;
}
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/**
* Retrieve post title from XMLRPC XML .
*
* If the title element is not part of the XML , then the default post title from
* the $post_default_title will be used instead .
*
* @ package WordPress
* @ subpackage XMLRPC
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* @ since 0.71
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*
* @ global string $post_default_title Default XMLRPC post title .
*
* @ param string $content XMLRPC XML Request content
* @ return string Post title
*/
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function xmlrpc_getposttitle ( $content ) {
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global $post_default_title ;
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if ( preg_match ( '/<title>(.+?)<\/title>/is' , $content , $matchtitle ) ) {
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$post_title = $matchtitle [ 1 ];
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} else {
$post_title = $post_default_title ;
}
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return $post_title ;
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}
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/**
* Retrieve the post category or categories from XMLRPC XML .
*
* If the category element is not found , then the default post category will be
* used . The return type then would be what $post_default_category . If the
* category is found , then it will always be an array .
*
* @ package WordPress
* @ subpackage XMLRPC
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* @ since 0.71
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*
* @ global string $post_default_category Default XMLRPC post category .
*
* @ param string $content XMLRPC XML Request content
* @ return string | array List of categories or category name .
*/
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function xmlrpc_getpostcategory ( $content ) {
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global $post_default_category ;
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if ( preg_match ( '/<category>(.+?)<\/category>/is' , $content , $matchcat ) ) {
$post_category = trim ( $matchcat [ 1 ], ',' );
$post_category = explode ( ',' , $post_category );
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} else {
$post_category = $post_default_category ;
}
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return $post_category ;
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}
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/**
* XMLRPC XML content without title and category elements .
*
* @ package WordPress
* @ subpackage XMLRPC
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* @ since 0.71
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*
* @ param string $content XMLRPC XML Request content
* @ return string XMLRPC XML Request content without title and category elements .
*/
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function xmlrpc_removepostdata ( $content ) {
$content = preg_replace ( '/<title>(.+?)<\/title>/si' , '' , $content );
$content = preg_replace ( '/<category>(.+?)<\/category>/si' , '' , $content );
$content = trim ( $content );
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return $content ;
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}
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/**
* Open the file handle for debugging .
*
* This function is used for XMLRPC feature , but it is general purpose enough
* to be used in anywhere .
*
* @ see fopen () for mode options .
* @ package WordPress
* @ subpackage Debug
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* @ since 0.71
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* @ uses $debug Used for whether debugging is enabled .
*
* @ param string $filename File path to debug file .
* @ param string $mode Same as fopen () mode parameter .
* @ return bool | resource File handle . False on failure .
*/
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function debug_fopen ( $filename , $mode ) {
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global $debug ;
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if ( 1 == $debug ) {
$fp = fopen ( $filename , $mode );
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return $fp ;
} else {
return false ;
}
}
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/**
* Write contents to the file used for debugging .
*
* Technically , this can be used to write to any file handle when the global
* $debug is set to 1 or true .
*
* @ package WordPress
* @ subpackage Debug
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* @ since 0.71
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* @ uses $debug Used for whether debugging is enabled .
*
* @ param resource $fp File handle for debugging file .
* @ param string $string Content to write to debug file .
*/
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function debug_fwrite ( $fp , $string ) {
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global $debug ;
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if ( 1 == $debug )
fwrite ( $fp , $string );
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}
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/**
* Close the debugging file handle .
*
* Technically , this can be used to close any file handle when the global $debug
* is set to 1 or true .
*
* @ package WordPress
* @ subpackage Debug
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* @ since 0.71
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* @ uses $debug Used for whether debugging is enabled .
*
* @ param resource $fp Debug File handle .
*/
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function debug_fclose ( $fp ) {
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global $debug ;
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if ( 1 == $debug )
fclose ( $fp );
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}
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/**
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* Check content for video and audio links to add as enclosures .
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*
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* Will not add enclosures that have already been added and will
* remove enclosures that are no longer in the post . This is called as
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* pingbacks and trackbacks .
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*
* @ package WordPress
* @ since 1.5 . 0
*
* @ uses $wpdb
*
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* @ param string $content Post Content
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* @ param int $post_ID Post ID
*/
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function do_enclose ( $content , $post_ID ) {
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global $wpdb ;
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include_once ( ABSPATH . WPINC . '/class-IXR.php' );
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$log = debug_fopen ( ABSPATH . 'enclosures.log' , 'a' );
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$post_links = array ();
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debug_fwrite ( $log , 'BEGIN ' . date ( 'YmdHis' , time () ) . " \n " );
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$pung = get_enclosed ( $post_ID );
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$ltrs = '\w' ;
$gunk = '/#~:.?+=&%@!\-' ;
$punc = '.:?\-' ;
$any = $ltrs . $gunk . $punc ;
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preg_match_all ( " { \ b http : [ $any ] +? (?= [ $punc ] * [^ $any ] | $ )}x " , $content , $post_links_temp );
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debug_fwrite ( $log , 'Post contents:' );
debug_fwrite ( $log , $content . " \n " );
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foreach ( $pung as $link_test ) {
if ( ! in_array ( $link_test , $post_links_temp [ 0 ] ) ) { // link no longer in post
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$mid = $wpdb -> get_col ( $wpdb -> prepare ( " SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s) " , $post_ID , $link_test . '%' ) );
do_action ( 'delete_postmeta' , $mid );
$wpdb -> query ( $wpdb -> prepare ( " DELETE FROM $wpdb->postmeta WHERE post_id IN(%s) " , implode ( ',' , $mid ) ) );
do_action ( 'deleted_postmeta' , $mid );
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}
}
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foreach ( ( array ) $post_links_temp [ 0 ] as $link_test ) {
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if ( ! in_array ( $link_test , $pung ) ) { // If we haven't pung it already
$test = parse_url ( $link_test );
if ( isset ( $test [ 'query' ] ) )
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$post_links [] = $link_test ;
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elseif ( $test [ 'path' ] != '/' && $test [ 'path' ] != '' )
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$post_links [] = $link_test ;
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}
}
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foreach ( ( array ) $post_links as $url ) {
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if ( $url != '' && ! $wpdb -> get_var ( $wpdb -> prepare ( " SELECT post_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s) " , $post_ID , $url . '%' ) ) ) {
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if ( $headers = wp_get_http_headers ( $url ) ) {
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$len = ( int ) $headers [ 'content-length' ];
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$type = $headers [ 'content-type' ];
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$allowed_types = array ( 'video' , 'audio' );
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// Check to see if we can figure out the mime type from
// the extension
$url_parts = parse_url ( $url );
$extension = pathinfo ( $url_parts [ 'path' ], PATHINFO_EXTENSION );
if ( ! empty ( $extension ) ) {
foreach ( get_allowed_mime_types ( ) as $exts => $mime ) {
if ( preg_match ( '!^(' . $exts . ')$!i' , $extension ) ) {
$type = $mime ;
break ;
}
}
}
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if ( in_array ( substr ( $type , 0 , strpos ( $type , " / " ) ), $allowed_types ) ) {
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$meta_value = " $url\n $len\n $type\n " ;
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$wpdb -> insert ( $wpdb -> postmeta , array ( 'post_id' => $post_ID , 'meta_key' => 'enclosure' , 'meta_value' => $meta_value ) );
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do_action ( 'added_postmeta' , $wpdb -> insert_id , $post_ID , 'enclosure' , $meta_value );
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}
}
}
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}
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}
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/**
* Perform a HTTP HEAD or GET request .
*
* If $file_path is a writable filename , this will do a GET request and write
* the file to that path .
*
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* @ since 2.5 . 0
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*
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* @ param string $url URL to fetch .
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* @ param string | bool $file_path Optional . File path to write request to .
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* @ param int $red ( private ) The number of Redirects followed , Upon 5 being hit , returns false .
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* @ return bool | string False on failure and string of headers if HEAD request .
*/
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function wp_get_http ( $url , $file_path = false , $red = 1 ) {
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@ set_time_limit ( 60 );
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if ( $red > 5 )
return false ;
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$options = array ();
$options [ 'redirection' ] = 5 ;
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if ( false == $file_path )
$options [ 'method' ] = 'HEAD' ;
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else
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$options [ 'method' ] = 'GET' ;
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$response = wp_remote_request ( $url , $options );
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if ( is_wp_error ( $response ) )
return false ;
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$headers = wp_remote_retrieve_headers ( $response );
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$headers [ 'response' ] = $response [ 'response' ][ 'code' ];
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// WP_HTTP no longer follows redirects for HEAD requests.
if ( 'HEAD' == $options [ 'method' ] && in_array ( $headers [ 'response' ], array ( 301 , 302 )) && isset ( $headers [ 'location' ] ) ) {
return wp_get_http ( $headers [ 'location' ], $file_path , ++ $red );
}
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if ( false == $file_path )
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return $headers ;
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// GET request - write it to the supplied filename
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$out_fp = fopen ( $file_path , 'w' );
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if ( ! $out_fp )
return $headers ;
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fwrite ( $out_fp , $response [ 'body' ]);
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fclose ( $out_fp );
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return $headers ;
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}
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/**
* Retrieve HTTP Headers from URL .
*
* @ since 1.5 . 1
*
* @ param string $url
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* @ param bool $deprecated Not Used .
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* @ return bool | string False on failure , headers on success .
*/
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function wp_get_http_headers ( $url , $deprecated = false ) {
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if ( ! empty ( $deprecated ) )
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_deprecated_argument ( __FUNCTION__ , '2.7' );
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$response = wp_remote_head ( $url );
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if ( is_wp_error ( $response ) )
return false ;
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return wp_remote_retrieve_headers ( $response );
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}
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/**
* Whether today is a new day .
*
* @ since 0.71
* @ uses $day Today
* @ uses $previousday Previous day
*
* @ return int 1 when new day , 0 if not a new day .
*/
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function is_new_day () {
global $day , $previousday ;
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if ( $day != $previousday )
return 1 ;
else
return 0 ;
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}
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/**
* Build URL query based on an associative and , or indexed array .
*
* This is a convenient function for easily building url queries . It sets the
* separator to '&' and uses _http_build_query () function .
*
* @ see _http_build_query () Used to build the query
* @ link http :// us2 . php . net / manual / en / function . http - build - query . php more on what
* http_build_query () does .
*
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* @ since 2.3 . 0
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*
* @ param array $data URL - encode key / value pairs .
* @ return string URL encoded string
*/
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function build_query ( $data ) {
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return _http_build_query ( $data , null , '&' , '' , false );
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}
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/**
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* Retrieve a modified URL query string .
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*
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* You can rebuild the URL and append a new query variable to the URL query by
* using this function . You can also retrieve the full URL with query data .
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*
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* Adding a single key & value or an associative array . Setting a key value to
* emptystring removes the key . Omitting oldquery_or_uri uses the $_SERVER
* value .
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*
* @ since 1.5 . 0
*
* @ param mixed $param1 Either newkey or an associative_array
* @ param mixed $param2 Either newvalue or oldquery or uri
* @ param mixed $param3 Optional . Old query or uri
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* @ return string New URL query string .
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*/
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function add_query_arg () {
$ret = '' ;
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if ( is_array ( func_get_arg ( 0 ) ) ) {
if ( @ func_num_args () < 2 || false === @ func_get_arg ( 1 ) )
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$uri = $_SERVER [ 'REQUEST_URI' ];
else
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$uri = @ func_get_arg ( 1 );
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} else {
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if ( @ func_num_args () < 3 || false === @ func_get_arg ( 2 ) )
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$uri = $_SERVER [ 'REQUEST_URI' ];
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else
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$uri = @ func_get_arg ( 2 );
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}
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if ( $frag = strstr ( $uri , '#' ) )
$uri = substr ( $uri , 0 , - strlen ( $frag ) );
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else
$frag = '' ;
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if ( preg_match ( '|^https?://|i' , $uri , $matches ) ) {
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$protocol = $matches [ 0 ];
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$uri = substr ( $uri , strlen ( $protocol ) );
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} else {
$protocol = '' ;
}
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if ( strpos ( $uri , '?' ) !== false ) {
$parts = explode ( '?' , $uri , 2 );
if ( 1 == count ( $parts ) ) {
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$base = '?' ;
$query = $parts [ 0 ];
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} else {
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$base = $parts [ 0 ] . '?' ;
$query = $parts [ 1 ];
}
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} elseif ( ! empty ( $protocol ) || strpos ( $uri , '=' ) === false ) {
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$base = $uri . '?' ;
$query = '' ;
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} else {
$base = '' ;
$query = $uri ;
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}
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wp_parse_str ( $query , $qs );
$qs = urlencode_deep ( $qs ); // this re-URL-encodes things that were already in the query string
if ( is_array ( func_get_arg ( 0 ) ) ) {
$kayvees = func_get_arg ( 0 );
$qs = array_merge ( $qs , $kayvees );
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} else {
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$qs [ func_get_arg ( 0 )] = func_get_arg ( 1 );
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}
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foreach ( ( array ) $qs as $k => $v ) {
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if ( $v === false )
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unset ( $qs [ $k ] );
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}
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$ret = build_query ( $qs );
$ret = trim ( $ret , '?' );
$ret = preg_replace ( '#=(&|$)#' , '$1' , $ret );
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$ret = $protocol . $base . $ret . $frag ;
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$ret = rtrim ( $ret , '?' );
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return $ret ;
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}
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/**
* Removes an item or list from the query string .
*
* @ since 1.5 . 0
*
* @ param string | array $key Query key or keys to remove .
* @ param bool $query When false uses the $_SERVER value .
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* @ return string New URL query string .
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*/
function remove_query_arg ( $key , $query = false ) {
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if ( is_array ( $key ) ) { // removing multiple keys
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foreach ( $key as $k )
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$query = add_query_arg ( $k , false , $query );
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return $query ;
}
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return add_query_arg ( $key , false , $query );
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}
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/**
* Walks the array while sanitizing the contents .
*
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* @ since 0.71
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*
* @ param array $array Array to used to walk while sanitizing contents .
* @ return array Sanitized $array .
*/
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function add_magic_quotes ( $array ) {
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foreach ( ( array ) $array as $k => $v ) {
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if ( is_array ( $v ) ) {
$array [ $k ] = add_magic_quotes ( $v );
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} else {
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$array [ $k ] = addslashes ( $v );
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}
}
return $array ;
}
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/**
* HTTP request for URI to retrieve content .
*
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* @ since 1.5 . 1
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* @ uses wp_remote_get ()
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*
* @ param string $uri URI / URL of web page to retrieve .
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* @ return bool | string HTTP content . False on failure .
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*/
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function wp_remote_fopen ( $uri ) {
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$parsed_url = @ parse_url ( $uri );
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if ( ! $parsed_url || ! is_array ( $parsed_url ) )
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return false ;
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$options = array ();
$options [ 'timeout' ] = 10 ;
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$response = wp_remote_get ( $uri , $options );
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if ( is_wp_error ( $response ) )
return false ;
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return $response [ 'body' ];
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}
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/**
* Setup the WordPress query .
*
* @ since 2.0 . 0
*
* @ param string $query_vars Default WP_Query arguments .
*/
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function wp ( $query_vars = '' ) {
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global $wp , $wp_query , $wp_the_query ;
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$wp -> main ( $query_vars );
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if ( ! isset ( $wp_the_query ) )
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$wp_the_query = $wp_query ;
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}
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/**
* Retrieve the description for the HTTP status .
*
* @ since 2.3 . 0
*
* @ param int $code HTTP status code .
* @ return string Empty string if not found , or description if found .
*/
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function get_status_header_desc ( $code ) {
global $wp_header_to_desc ;
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$code = absint ( $code );
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if ( ! isset ( $wp_header_to_desc ) ) {
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$wp_header_to_desc = array (
100 => 'Continue' ,
101 => 'Switching Protocols' ,
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102 => 'Processing' ,
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200 => 'OK' ,
201 => 'Created' ,
202 => 'Accepted' ,
203 => 'Non-Authoritative Information' ,
204 => 'No Content' ,
205 => 'Reset Content' ,
206 => 'Partial Content' ,
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207 => 'Multi-Status' ,
226 => 'IM Used' ,
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300 => 'Multiple Choices' ,
301 => 'Moved Permanently' ,
302 => 'Found' ,
303 => 'See Other' ,
304 => 'Not Modified' ,
305 => 'Use Proxy' ,
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306 => 'Reserved' ,
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307 => 'Temporary Redirect' ,
400 => 'Bad Request' ,
401 => 'Unauthorized' ,
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402 => 'Payment Required' ,
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403 => 'Forbidden' ,
404 => 'Not Found' ,
405 => 'Method Not Allowed' ,
406 => 'Not Acceptable' ,
407 => 'Proxy Authentication Required' ,
408 => 'Request Timeout' ,
409 => 'Conflict' ,
410 => 'Gone' ,
411 => 'Length Required' ,
412 => 'Precondition Failed' ,
413 => 'Request Entity Too Large' ,
414 => 'Request-URI Too Long' ,
415 => 'Unsupported Media Type' ,
416 => 'Requested Range Not Satisfiable' ,
417 => 'Expectation Failed' ,
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422 => 'Unprocessable Entity' ,
423 => 'Locked' ,
424 => 'Failed Dependency' ,
426 => 'Upgrade Required' ,
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500 => 'Internal Server Error' ,
501 => 'Not Implemented' ,
502 => 'Bad Gateway' ,
503 => 'Service Unavailable' ,
504 => 'Gateway Timeout' ,
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505 => 'HTTP Version Not Supported' ,
506 => 'Variant Also Negotiates' ,
507 => 'Insufficient Storage' ,
510 => 'Not Extended'
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);
}
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if ( isset ( $wp_header_to_desc [ $code ] ) )
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return $wp_header_to_desc [ $code ];
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else
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return '' ;
}
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/**
* Set HTTP status header .
*
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* @ since 2.0 . 0
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* @ uses apply_filters () Calls 'status_header' on status header string , HTTP
* HTTP code , HTTP code description , and protocol string as separate
* parameters .
*
* @ param int $header HTTP status code
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* @ return unknown
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*/
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function status_header ( $header ) {
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$text = get_status_header_desc ( $header );
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if ( empty ( $text ) )
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return false ;
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$protocol = $_SERVER [ " SERVER_PROTOCOL " ];
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if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol )
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$protocol = 'HTTP/1.0' ;
$status_header = " $protocol $header $text " ;
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if ( function_exists ( 'apply_filters' ) )
$status_header = apply_filters ( 'status_header' , $status_header , $header , $text , $protocol );
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return @ header ( $status_header , true , $header );
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}
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/**
* Gets the header information to prevent caching .
*
* The several different headers cover the different ways cache prevention is handled
* by different browsers
*
* @ since 2.8
*
* @ uses apply_filters ()
* @ return array The associative array of header names and field values .
*/
function wp_get_nocache_headers () {
$headers = array (
'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT' ,
'Last-Modified' => gmdate ( 'D, d M Y H:i:s' ) . ' GMT' ,
'Cache-Control' => 'no-cache, must-revalidate, max-age=0' ,
'Pragma' => 'no-cache' ,
);
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if ( function_exists ( 'apply_filters' ) ) {
$headers = apply_filters ( 'nocache_headers' , $headers );
}
return $headers ;
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}
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/**
* Sets the headers to prevent caching for the different browsers .
*
* Different browsers support different nocache headers , so several headers must
* be sent so that all of them get the point that no caching should occur .
*
* @ since 2.0 . 0
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* @ uses wp_get_nocache_headers ()
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*/
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function nocache_headers () {
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$headers = wp_get_nocache_headers ();
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foreach ( ( array ) $headers as $name => $field_value )
@ header ( " { $name } : { $field_value } " );
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}
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/**
* Set the headers for caching for 10 days with JavaScript content type .
*
* @ since 2.1 . 0
*/
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function cache_javascript_headers () {
$expiresOffset = 864000 ; // 10 days
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header ( " Content-Type: text/javascript; charset= " . get_bloginfo ( 'charset' ) );
header ( " Vary: Accept-Encoding " ); // Handle proxies
header ( " Expires: " . gmdate ( " D, d M Y H:i:s " , time () + $expiresOffset ) . " GMT " );
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}
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/**
* Retrieve the number of database queries during the WordPress execution .
*
* @ since 2.0 . 0
*
* @ return int Number of database queries
*/
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function get_num_queries () {
global $wpdb ;
return $wpdb -> num_queries ;
}
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/**
* Whether input is yes or no . Must be 'y' to be true .
*
* @ since 1.0 . 0
*
* @ param string $yn Character string containing either 'y' or 'n'
* @ return bool True if yes , false on anything else
*/
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function bool_from_yn ( $yn ) {
return ( strtolower ( $yn ) == 'y' );
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}
2006-03-12 17:57:00 -05:00
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/**
* Loads the feed template from the use of an action hook .
*
* If the feed action does not have a hook , then the function will die with a
* message telling the visitor that the feed is not valid .
*
* It is better to only have one hook for each feed .
*
* @ since 2.1 . 0
* @ uses $wp_query Used to tell if the use a comment feed .
* @ uses do_action () Calls 'do_feed_$feed' hook , if a hook exists for the feed .
*/
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function do_feed () {
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global $wp_query ;
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$feed = get_query_var ( 'feed' );
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// Remove the pad, if present.
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$feed = preg_replace ( '/^_+/' , '' , $feed );
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if ( $feed == '' || $feed == 'feed' )
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$feed = get_default_feed ();
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$hook = 'do_feed_' . $feed ;
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if ( ! has_action ( $hook ) ) {
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$message = sprintf ( __ ( 'ERROR: %s is not a valid feed template.' ), esc_html ( $feed ));
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wp_die ( $message , '' , array ( 'response' => 404 ) );
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}
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do_action ( $hook , $wp_query -> is_comment_feed );
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}
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/**
* Load the RDF RSS 0.91 Feed template .
*
* @ since 2.1 . 0
*/
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function do_feed_rdf () {
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load_template ( ABSPATH . WPINC . '/feed-rdf.php' );
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}
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/**
* Load the RSS 1.0 Feed Template
*
* @ since 2.1 . 0
*/
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function do_feed_rss () {
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load_template ( ABSPATH . WPINC . '/feed-rss.php' );
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}
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/**
* Load either the RSS2 comment feed or the RSS2 posts feed .
*
* @ since 2.1 . 0
*
* @ param bool $for_comments True for the comment feed , false for normal feed .
*/
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function do_feed_rss2 ( $for_comments ) {
if ( $for_comments )
load_template ( ABSPATH . WPINC . '/feed-rss2-comments.php' );
else
load_template ( ABSPATH . WPINC . '/feed-rss2.php' );
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}
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/**
* Load either Atom comment feed or Atom posts feed .
*
* @ since 2.1 . 0
*
* @ param bool $for_comments True for the comment feed , false for normal feed .
*/
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function do_feed_atom ( $for_comments ) {
if ( $for_comments )
load_template ( ABSPATH . WPINC . '/feed-atom-comments.php' );
else
load_template ( ABSPATH . WPINC . '/feed-atom.php' );
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}
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/**
* Display the robot . txt file content .
*
* The echo content should be with usage of the permalinks or for creating the
* robot . txt file .
*
* @ since 2.1 . 0
* @ uses do_action () Calls 'do_robotstxt' hook for displaying robot . txt rules .
*/
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function do_robots () {
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header ( 'Content-Type: text/plain; charset=utf-8' );
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do_action ( 'do_robotstxt' );
2007-03-27 12:44:36 -04:00
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if ( '0' == get_option ( 'blog_public' ) ) {
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echo " User-agent: * \n " ;
echo " Disallow: / \n " ;
} else {
echo " User-agent: * \n " ;
echo " Disallow: \n " ;
}
}
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/**
* Test whether blog is already installed .
*
* The cache will be checked first . If you have a cache plugin , which saves the
* cache values , then this will work . If you use the default WordPress cache ,
* and the database goes away , then you might have problems .
*
* Checks for the option siteurl for whether WordPress is installed .
*
* @ since 2.1 . 0
* @ uses $wpdb
*
* @ return bool Whether blog is already installed .
*/
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function is_blog_installed () {
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global $wpdb ;
2007-10-13 14:39:28 -04:00
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// Check cache first. If options table goes away and we have true cached, oh well.
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if ( wp_cache_get ( 'is_blog_installed' ) )
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return true ;
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$suppress = $wpdb -> suppress_errors ();
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if ( ! defined ( 'WP_INSTALLING' ) ) {
$alloptions = wp_load_alloptions ();
}
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// If siteurl is not set to autoload, check it specifically
if ( ! isset ( $alloptions [ 'siteurl' ] ) )
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$installed = $wpdb -> get_var ( " SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl' " );
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else
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$installed = $alloptions [ 'siteurl' ];
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$wpdb -> suppress_errors ( $suppress );
2007-03-23 13:45:40 -04:00
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$installed = ! empty ( $installed );
wp_cache_set ( 'is_blog_installed' , $installed );
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2009-09-06 14:46:27 -04:00
if ( $installed )
return true ;
$suppress = $wpdb -> suppress_errors ();
$tables = $wpdb -> get_col ( 'SHOW TABLES' );
$wpdb -> suppress_errors ( $suppress );
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$wp_tables = $wpdb -> tables ( 'all' );
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// Loop over the WP tables. If none exist, then scratch install is allowed.
// If one or more exist, suggest table repair since we got here because the options
// table could not be accessed.
2010-02-19 14:57:03 -05:00
foreach ( $wp_tables as $table ) {
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// If one of the WP tables exist, then we are in an insane state.
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if ( in_array ( $table , $tables ) ) {
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// If visiting repair.php, return true and let it take over.
if ( defined ( 'WP_REPAIRING' ) )
return true ;
// Die with a DB error.
$wpdb -> error = __ ( 'One or more database tables are unavailable. The database may need to be <a href="maint/repair.php?referrer=is_blog_installed">repaired</a>.' );
dead_db ();
}
}
wp_cache_set ( 'is_blog_installed' , false );
return false ;
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}
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/**
* Retrieve URL with nonce added to URL query .
*
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* @ package WordPress
* @ subpackage Security
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* @ since 2.0 . 4
*
* @ param string $actionurl URL to add nonce action
* @ param string $action Optional . Nonce action name
* @ return string URL with nonce action added .
*/
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function wp_nonce_url ( $actionurl , $action = - 1 ) {
$actionurl = str_replace ( '&' , '&' , $actionurl );
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return esc_html ( add_query_arg ( '_wpnonce' , wp_create_nonce ( $action ), $actionurl ) );
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}
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/**
* Retrieve or display nonce hidden field for forms .
*
* The nonce field is used to validate that the contents of the form came from
* the location on the current site and not somewhere else . The nonce does not
* offer absolute protection , but should protect against most cases . It is very
* important to use nonce field in forms .
*
* If you set $echo to true and set $referer to true , then you will need to
* retrieve the { @ link wp_referer_field () wp referer field } . If you have the
* $referer set to true and are echoing the nonce field , it will also echo the
* referer field .
*
* The $action and $name are optional , but if you want to have better security ,
* it is strongly suggested to set those two parameters . It is easier to just
* call the function without any parameters , because validation of the nonce
* doesn ' t require any parameters , but since crackers know what the default is
* it won ' t be difficult for them to find a way around your nonce and cause
* damage .
*
* The input name will be whatever $name value you gave . The input value will be
* the nonce creation value .
*
* @ package WordPress
* @ subpackage Security
* @ since 2.0 . 4
*
* @ param string $action Optional . Action name .
* @ param string $name Optional . Nonce name .
* @ param bool $referer Optional , default true . Whether to set the referer field for validation .
* @ param bool $echo Optional , default true . Whether to display or return hidden form field .
* @ return string Nonce field .
*/
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function wp_nonce_field ( $action = - 1 , $name = " _wpnonce " , $referer = true , $echo = true ) {
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$name = esc_attr ( $name );
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$nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce ( $action ) . '" />' ;
if ( $echo )
echo $nonce_field ;
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if ( $referer )
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wp_referer_field ( $echo , 'previous' );
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return $nonce_field ;
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}
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/**
* Retrieve or display referer hidden field for forms .
*
* The referer link is the current Request URI from the server super global . The
* input name is '_wp_http_referer' , in case you wanted to check manually .
*
* @ package WordPress
* @ subpackage Security
* @ since 2.0 . 4
*
* @ param bool $echo Whether to echo or return the referer field .
* @ return string Referer field .
*/
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function wp_referer_field ( $echo = true ) {
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$ref = esc_attr ( $_SERVER [ 'REQUEST_URI' ] );
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$referer_field = '<input type="hidden" name="_wp_http_referer" value="' . $ref . '" />' ;
if ( $echo )
echo $referer_field ;
return $referer_field ;
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}
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/**
* Retrieve or display original referer hidden field for forms .
*
* The input name is '_wp_original_http_referer' and will be either the same
* value of { @ link wp_referer_field ()}, if that was posted already or it will
* be the current page , if it doesn ' t exist .
*
* @ package WordPress
* @ subpackage Security
* @ since 2.0 . 4
*
* @ param bool $echo Whether to echo the original http referer
* @ param string $jump_back_to Optional , default is 'current' . Can be 'previous' or page you want to jump back to .
* @ return string Original referer field .
*/
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function wp_original_referer_field ( $echo = true , $jump_back_to = 'current' ) {
$jump_back_to = ( 'previous' == $jump_back_to ) ? wp_get_referer () : $_SERVER [ 'REQUEST_URI' ];
$ref = ( wp_get_original_referer () ) ? wp_get_original_referer () : $jump_back_to ;
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$orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr ( stripslashes ( $ref ) ) . '" />' ;
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if ( $echo )
echo $orig_referer_field ;
return $orig_referer_field ;
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}
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/**
* Retrieve referer from '_wp_http_referer' , HTTP referer , or current page respectively .
*
* @ package WordPress
* @ subpackage Security
* @ since 2.0 . 4
*
* @ return string | bool False on failure . Referer URL on success .
*/
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function wp_get_referer () {
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$ref = '' ;
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if ( ! empty ( $_REQUEST [ '_wp_http_referer' ] ) )
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$ref = $_REQUEST [ '_wp_http_referer' ];
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else if ( ! empty ( $_SERVER [ 'HTTP_REFERER' ] ) )
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$ref = $_SERVER [ 'HTTP_REFERER' ];
if ( $ref !== $_SERVER [ 'REQUEST_URI' ] )
return $ref ;
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return false ;
}
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/**
* Retrieve original referer that was posted , if it exists .
*
* @ package WordPress
* @ subpackage Security
* @ since 2.0 . 4
*
* @ return string | bool False if no original referer or original referer if set .
*/
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function wp_get_original_referer () {
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if ( ! empty ( $_REQUEST [ '_wp_original_http_referer' ] ) )
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return $_REQUEST [ '_wp_original_http_referer' ];
return false ;
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}
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/**
* Recursive directory creation based on full path .
*
* Will attempt to set permissions on folders .
*
* @ since 2.0 . 1
*
* @ param string $target Full path to attempt to create .
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* @ return bool Whether the path was created . True if path already exists .
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*/
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function wp_mkdir_p ( $target ) {
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// from php.net/mkdir user contributed notes
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$target = str_replace ( '//' , '/' , $target );
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// safe mode fails with a trailing slash under certain PHP versions.
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$target = untrailingslashit ( $target );
if ( empty ( $target ) )
$target = '/' ;
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if ( file_exists ( $target ) )
return @ is_dir ( $target );
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// Attempting to create the directory may clutter up our display.
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if ( @ mkdir ( $target ) ) {
$stat = @ stat ( dirname ( $target ) );
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$dir_perms = $stat [ 'mode' ] & 0007777 ; // Get the permission bits.
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@ chmod ( $target , $dir_perms );
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return true ;
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} elseif ( is_dir ( dirname ( $target ) ) ) {
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return false ;
}
// If the above failed, attempt to create the parent node, then try again.
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if ( ( $target != '/' ) && ( wp_mkdir_p ( dirname ( $target ) ) ) )
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return wp_mkdir_p ( $target );
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return false ;
}
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/**
* Test if a give filesystem path is absolute ( '/foo/bar' , 'c:\windows' ) .
*
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* @ since 2.5 . 0
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*
* @ param string $path File path
* @ return bool True if path is absolute , false is not absolute .
*/
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function path_is_absolute ( $path ) {
// this is definitive if true but fails if $path does not exist or contains a symbolic link
if ( realpath ( $path ) == $path )
return true ;
if ( strlen ( $path ) == 0 || $path { 0 } == '.' )
return false ;
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// windows allows absolute paths like this
if ( preg_match ( '#^[a-zA-Z]:\\\\#' , $path ) )
return true ;
// a path starting with / or \ is absolute; anything else is relative
return ( bool ) preg_match ( '#^[/\\\\]#' , $path );
}
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/**
* Join two filesystem paths together ( e . g . 'give me $path relative to $base' ) .
*
* If the $path is absolute , then it the full path is returned .
*
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* @ since 2.5 . 0
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*
* @ param string $base
* @ param string $path
* @ return string The path with the base or absolute path .
*/
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function path_join ( $base , $path ) {
if ( path_is_absolute ( $path ) )
return $path ;
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return rtrim ( $base , '/' ) . '/' . ltrim ( $path , '/' );
}
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/**
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* Get an array containing the current upload directory ' s path and url .
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*
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* Checks the 'upload_path' option , which should be from the web root folder ,
* and if it isn ' t empty it will be used . If it is empty , then the path will be
* 'WP_CONTENT_DIR/uploads' . If the 'UPLOADS' constant is defined , then it will
* override the 'upload_path' option and 'WP_CONTENT_DIR/uploads' path .
*
* The upload URL path is set either by the 'upload_url_path' option or by using
* the 'WP_CONTENT_URL' constant and appending '/uploads' to the path .
*
* If the 'uploads_use_yearmonth_folders' is set to true ( checkbox if checked in
* the administration settings panel ), then the time will be used . The format
* will be year first and then month .
*
* If the path couldn ' t be created , then an error will be returned with the key
* 'error' containing the error message . The error suggests that the parent
* directory is not writable by the server .
*
* On success , the returned array will have many indices :
* 'path' - base directory and sub directory or full path to upload directory .
* 'url' - base url and sub directory or absolute URL to upload directory .
* 'subdir' - sub directory if uploads use year / month folders option is on .
* 'basedir' - path without subdir .
* 'baseurl' - URL path without subdir .
* 'error' - set to false .
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*
* @ since 2.0 . 0
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* @ uses apply_filters () Calls 'upload_dir' on returned array .
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*
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* @ param string $time Optional . Time formatted in 'yyyy/mm' .
* @ return array See above for description .
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*/
function wp_upload_dir ( $time = null ) {
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$siteurl = get_option ( 'siteurl' );
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$upload_path = get_option ( 'upload_path' );
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$upload_path = trim ( $upload_path );
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if ( empty ( $upload_path ) ) {
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$dir = WP_CONTENT_DIR . '/uploads' ;
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} else {
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$dir = $upload_path ;
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if ( 'wp-content/uploads' == $upload_path ) {
$dir = WP_CONTENT_DIR . '/uploads' ;
} elseif ( 0 !== strpos ( $dir , ABSPATH ) ) {
// $dir is absolute, $upload_path is (maybe) relative to ABSPATH
$dir = path_join ( ABSPATH , $dir );
}
}
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if ( ! $url = get_option ( 'upload_url_path' ) ) {
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if ( empty ( $upload_path ) || ( 'wp-content/uploads' == $upload_path ) || ( $upload_path == $dir ) )
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$url = WP_CONTENT_URL . '/uploads' ;
else
$url = trailingslashit ( $siteurl ) . $upload_path ;
}
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if ( defined ( 'UPLOADS' ) ) {
$dir = ABSPATH . UPLOADS ;
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$url = trailingslashit ( $siteurl ) . UPLOADS ;
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}
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if ( is_multisite () ) {
if ( defined ( 'BLOGUPLOADDIR' ) )
$dir = untrailingslashit ( BLOGUPLOADDIR );
$url = str_replace ( UPLOADS , 'files' , $url );
}
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$bdir = $dir ;
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$burl = $url ;
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$subdir = '' ;
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if ( get_option ( 'uploads_use_yearmonth_folders' ) ) {
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// Generate the yearly and monthly dirs
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if ( ! $time )
$time = current_time ( 'mysql' );
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$y = substr ( $time , 0 , 4 );
$m = substr ( $time , 5 , 2 );
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$subdir = " / $y / $m " ;
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}
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$dir .= $subdir ;
$url .= $subdir ;
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$uploads = apply_filters ( 'upload_dir' , array ( 'path' => $dir , 'url' => $url , 'subdir' => $subdir , 'basedir' => $bdir , 'baseurl' => $burl , 'error' => false ) );
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// Make sure we have an uploads dir
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if ( ! wp_mkdir_p ( $uploads [ 'path' ] ) ) {
$message = sprintf ( __ ( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $uploads [ 'path' ] );
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return array ( 'error' => $message );
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}
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return $uploads ;
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}
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/**
* Get a filename that is sanitized and unique for the given directory .
*
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* If the filename is not unique , then a number will be added to the filename
* before the extension , and will continue adding numbers until the filename is
* unique .
*
* The callback must accept two parameters , the first one is the directory and
* the second is the filename . The callback must be a function .
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*
* @ since 2.5
*
* @ param string $dir
* @ param string $filename
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* @ param string $unique_filename_callback Function name , must be a function .
* @ return string New filename , if given wasn ' t unique .
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*/
function wp_unique_filename ( $dir , $filename , $unique_filename_callback = null ) {
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// sanitize the file name before we begin processing
$filename = sanitize_file_name ( $filename );
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// separate the filename into a name and extension
$info = pathinfo ( $filename );
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$ext = ! empty ( $info [ 'extension' ]) ? '.' . $info [ 'extension' ] : '' ;
$name = basename ( $filename , $ext );
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// edge case: if file is named '.ext', treat as an empty name
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if ( $name === $ext )
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$name = '' ;
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// Increment the file number until we have a unique file to save in $dir. Use $override['unique_filename_callback'] if supplied.
if ( $unique_filename_callback && function_exists ( $unique_filename_callback ) ) {
$filename = $unique_filename_callback ( $dir , $name );
} else {
$number = '' ;
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// change '.ext' to lower case
if ( $ext && strtolower ( $ext ) != $ext ) {
$ext2 = strtolower ( $ext );
$filename2 = preg_replace ( '|' . preg_quote ( $ext ) . '$|' , $ext2 , $filename );
// check for both lower and upper case extension or image sub-sizes may be overwritten
while ( file_exists ( $dir . " / $filename " ) || file_exists ( $dir . " / $filename2 " ) ) {
$new_number = $number + 1 ;
$filename = str_replace ( " $number $ext " , " $new_number $ext " , $filename );
$filename2 = str_replace ( " $number $ext2 " , " $new_number $ext2 " , $filename2 );
$number = $new_number ;
}
return $filename2 ;
}
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while ( file_exists ( $dir . " / $filename " ) ) {
if ( '' == " $number $ext " )
$filename = $filename . ++ $number . $ext ;
else
$filename = str_replace ( " $number $ext " , ++ $number . $ext , $filename );
}
}
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return $filename ;
}
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/**
* Create a file in the upload folder with given content .
*
* If there is an error , then the key 'error' will exist with the error message .
* If success , then the key 'file' will have the unique file path , the 'url' key
* will have the link to the new file . and the 'error' key will be set to false .
*
* This function will not move an uploaded file to the upload folder . It will
* create a new file with the content in $bits parameter . If you move the upload
* file , read the content of the uploaded file , and then you can give the
* filename and content to this function , which will add it to the upload
* folder .
*
* The permissions will be set on the new file automatically by this function .
*
* @ since 2.0 . 0
*
* @ param string $name
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* @ param null $deprecated Never used . Set to null .
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* @ param mixed $bits File content
* @ param string $time Optional . Time formatted in 'yyyy/mm' .
* @ return array
*/
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function wp_upload_bits ( $name , $deprecated , $bits , $time = null ) {
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if ( ! empty ( $deprecated ) )
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_deprecated_argument ( __FUNCTION__ , '2.0' );
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if ( empty ( $name ) )
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return array ( 'error' => __ ( 'Empty filename' ) );
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$wp_filetype = wp_check_filetype ( $name );
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if ( ! $wp_filetype [ 'ext' ] )
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return array ( 'error' => __ ( 'Invalid file type' ) );
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$upload = wp_upload_dir ( $time );
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if ( $upload [ 'error' ] !== false )
return $upload ;
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$upload_bits_error = apply_filters ( 'wp_upload_bits' , array ( 'name' => $name , 'bits' => $bits , 'time' => $time ) );
if ( ! is_array ( $upload_bits_error ) ) {
$upload [ 'error' ] = $upload_bits_error ;
return $upload ;
}
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$filename = wp_unique_filename ( $upload [ 'path' ], $name );
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$new_file = $upload [ 'path' ] . " / $filename " ;
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if ( ! wp_mkdir_p ( dirname ( $new_file ) ) ) {
$message = sprintf ( __ ( 'Unable to create directory %s. Is its parent directory writable by the server?' ), dirname ( $new_file ) );
return array ( 'error' => $message );
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}
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$ifp = @ fopen ( $new_file , 'wb' );
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if ( ! $ifp )
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return array ( 'error' => sprintf ( __ ( 'Could not write file %s' ), $new_file ) );
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@ fwrite ( $ifp , $bits );
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fclose ( $ifp );
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// Set correct file permissions
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$stat = @ stat ( dirname ( $new_file ) );
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$perms = $stat [ 'mode' ] & 0007777 ;
$perms = $perms & 0000666 ;
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@ chmod ( $new_file , $perms );
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// Compute the URL
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$url = $upload [ 'url' ] . " / $filename " ;
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return array ( 'file' => $new_file , 'url' => $url , 'error' => false );
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}
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/**
* Retrieve the file type based on the extension name .
*
* @ package WordPress
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* @ since 2.5 . 0
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* @ uses apply_filters () Calls 'ext2type' hook on default supported types .
*
* @ param string $ext The extension to search .
* @ return string | null The file type , example : audio , video , document , spreadsheet , etc . Null if not found .
*/
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function wp_ext2type ( $ext ) {
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$ext2type = apply_filters ( 'ext2type' , array (
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'audio' => array ( 'aac' , 'ac3' , 'aif' , 'aiff' , 'm3a' , 'm4a' , 'm4b' , 'mka' , 'mp1' , 'mp2' , 'mp3' , 'ogg' , 'oga' , 'ram' , 'wav' , 'wma' ),
'video' => array ( 'asf' , 'avi' , 'divx' , 'dv' , 'flv' , 'm4v' , 'mkv' , 'mov' , 'mp4' , 'mpeg' , 'mpg' , 'mpv' , 'ogm' , 'ogv' , 'qt' , 'rm' , 'vob' , 'wmv' ),
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'document' => array ( 'doc' , 'docx' , 'docm' , 'dotm' , 'odt' , 'pages' , 'pdf' , 'rtf' ),
'spreadsheet' => array ( 'numbers' , 'ods' , 'xls' , 'xlsx' , 'xlsb' , 'xlsm' ),
'interactive' => array ( 'key' , 'ppt' , 'pptx' , 'pptm' , 'odp' , 'swf' ),
'text' => array ( 'asc' , 'txt' ),
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'archive' => array ( 'bz2' , 'cab' , 'dmg' , 'gz' , 'rar' , 'sea' , 'sit' , 'sqx' , 'tar' , 'tgz' , 'zip' ),
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'code' => array ( 'css' , 'html' , 'php' , 'js' ),
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));
foreach ( $ext2type as $type => $exts )
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if ( in_array ( $ext , $exts ) )
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return $type ;
}
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/**
* Retrieve the file type from the file name .
*
* You can optionally define the mime array , if needed .
*
* @ since 2.0 . 4
*
* @ param string $filename File name or path .
* @ param array $mimes Optional . Key is the file extension with value as the mime type .
* @ return array Values with extension first and mime type .
*/
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function wp_check_filetype ( $filename , $mimes = null ) {
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if ( empty ( $mimes ) )
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$mimes = get_allowed_mime_types ();
$type = false ;
$ext = false ;
foreach ( $mimes as $ext_preg => $mime_match ) {
$ext_preg = '!\.(' . $ext_preg . ')$!i' ;
if ( preg_match ( $ext_preg , $filename , $ext_matches ) ) {
$type = $mime_match ;
$ext = $ext_matches [ 1 ];
break ;
}
}
return compact ( 'ext' , 'type' );
}
/**
* Retrieve list of allowed mime types and file extensions .
*
* @ since 2.8 . 6
*
* @ return array Array of mime types keyed by the file extension regex corresponding to those types .
*/
function get_allowed_mime_types () {
static $mimes = false ;
if ( ! $mimes ) {
// Accepted MIME types are set here as PCRE unless provided.
$mimes = apply_filters ( 'upload_mimes' , array (
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'jpg|jpeg|jpe' => 'image/jpeg' ,
'gif' => 'image/gif' ,
'png' => 'image/png' ,
'bmp' => 'image/bmp' ,
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'tif|tiff' => 'image/tiff' ,
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'ico' => 'image/x-icon' ,
'asf|asx|wax|wmv|wmx' => 'video/asf' ,
'avi' => 'video/avi' ,
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'divx' => 'video/divx' ,
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'flv' => 'video/x-flv' ,
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'mov|qt' => 'video/quicktime' ,
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'mpeg|mpg|mpe' => 'video/mpeg' ,
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'txt|asc|c|cc|h' => 'text/plain' ,
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'rtx' => 'text/richtext' ,
'css' => 'text/css' ,
'htm|html' => 'text/html' ,
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'mp3|m4a|m4b' => 'audio/mpeg' ,
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'mp4|m4v' => 'video/mp4' ,
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'ra|ram' => 'audio/x-realaudio' ,
'wav' => 'audio/wav' ,
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'ogg|oga' => 'audio/ogg' ,
'ogv' => 'video/ogg' ,
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'mid|midi' => 'audio/midi' ,
'wma' => 'audio/wma' ,
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'mka' => 'audio/x-matroska' ,
'mkv' => 'video/x-matroska' ,
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'rtf' => 'application/rtf' ,
'js' => 'application/javascript' ,
'pdf' => 'application/pdf' ,
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'doc|docx' => 'application/msword' ,
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'pot|pps|ppt|pptx|ppam|pptm|sldm|ppsm|potm' => 'application/vnd.ms-powerpoint' ,
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'wri' => 'application/vnd.ms-write' ,
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'xla|xls|xlsx|xlt|xlw|xlam|xlsb|xlsm|xltm' => 'application/vnd.ms-excel' ,
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'mdb' => 'application/vnd.ms-access' ,
'mpp' => 'application/vnd.ms-project' ,
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'docm|dotm' => 'application/vnd.ms-word' ,
'pptx|sldx|ppsx|potx' => 'application/vnd.openxmlformats-officedocument.presentationml' ,
'xlsx|xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml' ,
'docx|dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml' ,
'onetoc|onetoc2|onetmp|onepkg' => 'application/onenote' ,
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'swf' => 'application/x-shockwave-flash' ,
'class' => 'application/java' ,
'tar' => 'application/x-tar' ,
'zip' => 'application/zip' ,
'gz|gzip' => 'application/x-gzip' ,
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'exe' => 'application/x-msdownload' ,
// openoffice formats
'odt' => 'application/vnd.oasis.opendocument.text' ,
'odp' => 'application/vnd.oasis.opendocument.presentation' ,
'ods' => 'application/vnd.oasis.opendocument.spreadsheet' ,
'odg' => 'application/vnd.oasis.opendocument.graphics' ,
'odc' => 'application/vnd.oasis.opendocument.chart' ,
'odb' => 'application/vnd.oasis.opendocument.database' ,
'odf' => 'application/vnd.oasis.opendocument.formula' ,
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) );
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}
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return $mimes ;
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}
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/**
* Retrieve nonce action " Are you sure " message .
*
* The action is split by verb and noun . The action format is as follows :
* verb - action_extra . The verb is before the first dash and has the format of
* letters and no spaces and numbers . The noun is after the dash and before the
* underscore , if an underscore exists . The noun is also only letters .
*
* The filter will be called for any action , which is not defined by WordPress .
* You may use the filter for your plugin to explain nonce actions to the user ,
* when they get the " Are you sure? " message . The filter is in the format of
* 'explain_nonce_$verb-$noun' with the $verb replaced by the found verb and the
* $noun replaced by the found noun . The two parameters that are given to the
* hook are the localized " Are you sure you want to do this? " message with the
* extra text ( the text after the underscore ) .
*
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* @ package WordPress
* @ subpackage Security
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* @ since 2.0 . 4
*
* @ param string $action Nonce action .
* @ return string Are you sure message .
*/
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function wp_explain_nonce ( $action ) {
if ( $action !== - 1 && preg_match ( '/([a-z]+)-([a-z]+)(_(.+))?/' , $action , $matches ) ) {
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$verb = $matches [ 1 ];
$noun = $matches [ 2 ];
$trans = array ();
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$trans [ 'update' ][ 'attachment' ] = array ( __ ( 'Your attempt to edit this attachment: “%s” has failed.' ), 'get_the_title' );
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$trans [ 'add' ][ 'category' ] = array ( __ ( 'Your attempt to add this category has failed.' ), false );
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$trans [ 'delete' ][ 'category' ] = array ( __ ( 'Your attempt to delete this category: “%s” has failed.' ), 'get_cat_name' );
$trans [ 'update' ][ 'category' ] = array ( __ ( 'Your attempt to edit this category: “%s” has failed.' ), 'get_cat_name' );
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$trans [ 'delete' ][ 'comment' ] = array ( __ ( 'Your attempt to delete this comment: “%s” has failed.' ), 'use_id' );
$trans [ 'unapprove' ][ 'comment' ] = array ( __ ( 'Your attempt to unapprove this comment: “%s” has failed.' ), 'use_id' );
$trans [ 'approve' ][ 'comment' ] = array ( __ ( 'Your attempt to approve this comment: “%s” has failed.' ), 'use_id' );
$trans [ 'update' ][ 'comment' ] = array ( __ ( 'Your attempt to edit this comment: “%s” has failed.' ), 'use_id' );
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$trans [ 'bulk' ][ 'comments' ] = array ( __ ( 'Your attempt to bulk modify comments has failed.' ), false );
$trans [ 'moderate' ][ 'comments' ] = array ( __ ( 'Your attempt to moderate comments has failed.' ), false );
$trans [ 'add' ][ 'bookmark' ] = array ( __ ( 'Your attempt to add this link has failed.' ), false );
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$trans [ 'delete' ][ 'bookmark' ] = array ( __ ( 'Your attempt to delete this link: “%s” has failed.' ), 'use_id' );
$trans [ 'update' ][ 'bookmark' ] = array ( __ ( 'Your attempt to edit this link: “%s” has failed.' ), 'use_id' );
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$trans [ 'bulk' ][ 'bookmarks' ] = array ( __ ( 'Your attempt to bulk modify links has failed.' ), false );
$trans [ 'add' ][ 'page' ] = array ( __ ( 'Your attempt to add this page has failed.' ), false );
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$trans [ 'delete' ][ 'page' ] = array ( __ ( 'Your attempt to delete this page: “%s” has failed.' ), 'get_the_title' );
$trans [ 'update' ][ 'page' ] = array ( __ ( 'Your attempt to edit this page: “%s” has failed.' ), 'get_the_title' );
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$trans [ 'edit' ][ 'plugin' ] = array ( __ ( 'Your attempt to edit this plugin file: “%s” has failed.' ), 'use_id' );
$trans [ 'activate' ][ 'plugin' ] = array ( __ ( 'Your attempt to activate this plugin: “%s” has failed.' ), 'use_id' );
$trans [ 'deactivate' ][ 'plugin' ] = array ( __ ( 'Your attempt to deactivate this plugin: “%s” has failed.' ), 'use_id' );
$trans [ 'upgrade' ][ 'plugin' ] = array ( __ ( 'Your attempt to upgrade this plugin: “%s” has failed.' ), 'use_id' );
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$trans [ 'add' ][ 'post' ] = array ( __ ( 'Your attempt to add this post has failed.' ), false );
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$trans [ 'delete' ][ 'post' ] = array ( __ ( 'Your attempt to delete this post: “%s” has failed.' ), 'get_the_title' );
$trans [ 'update' ][ 'post' ] = array ( __ ( 'Your attempt to edit this post: “%s” has failed.' ), 'get_the_title' );
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$trans [ 'add' ][ 'user' ] = array ( __ ( 'Your attempt to add this user has failed.' ), false );
$trans [ 'delete' ][ 'users' ] = array ( __ ( 'Your attempt to delete users has failed.' ), false );
$trans [ 'bulk' ][ 'users' ] = array ( __ ( 'Your attempt to bulk modify users has failed.' ), false );
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$trans [ 'update' ][ 'user' ] = array ( __ ( 'Your attempt to edit this user: “%s” has failed.' ), 'get_the_author_meta' , 'display_name' );
$trans [ 'update' ][ 'profile' ] = array ( __ ( 'Your attempt to modify the profile for: “%s” has failed.' ), 'get_the_author_meta' , 'display_name' );
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$trans [ 'update' ][ 'options' ] = array ( __ ( 'Your attempt to edit your settings has failed.' ), false );
$trans [ 'update' ][ 'permalink' ] = array ( __ ( 'Your attempt to change your permalink structure to: %s has failed.' ), 'use_id' );
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$trans [ 'edit' ][ 'file' ] = array ( __ ( 'Your attempt to edit this file: “%s” has failed.' ), 'use_id' );
$trans [ 'edit' ][ 'theme' ] = array ( __ ( 'Your attempt to edit this theme file: “%s” has failed.' ), 'use_id' );
$trans [ 'switch' ][ 'theme' ] = array ( __ ( 'Your attempt to switch to this theme: “%s” has failed.' ), 'use_id' );
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$trans [ 'log' ][ 'out' ] = array ( sprintf ( __ ( 'You are attempting to log out of %s' ), get_bloginfo ( 'sitename' ) ), false );
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if ( isset ( $trans [ $verb ][ $noun ] ) ) {
if ( ! empty ( $trans [ $verb ][ $noun ][ 1 ] ) ) {
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$lookup = $trans [ $verb ][ $noun ][ 1 ];
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if ( isset ( $trans [ $verb ][ $noun ][ 2 ]) )
$lookup_value = $trans [ $verb ][ $noun ][ 2 ];
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$object = $matches [ 4 ];
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if ( 'use_id' != $lookup ) {
if ( isset ( $lookup_value ) )
$object = call_user_func ( $lookup , $lookup_value , $object );
else
$object = call_user_func ( $lookup , $object );
}
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return sprintf ( $trans [ $verb ][ $noun ][ 0 ], esc_html ( $object ) );
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} else {
return $trans [ $verb ][ $noun ][ 0 ];
}
}
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return apply_filters ( 'explain_nonce_' . $verb . '-' . $noun , __ ( 'Are you sure you want to do this?' ), isset ( $matches [ 4 ]) ? $matches [ 4 ] : '' );
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} else {
return apply_filters ( 'explain_nonce_' . $action , __ ( 'Are you sure you want to do this?' ) );
}
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}
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/**
* Display " Are You Sure " message to confirm the action being taken .
*
* If the action has the nonce explain message , then it will be displayed along
* with the " Are you sure? " message .
*
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* @ package WordPress
* @ subpackage Security
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* @ since 2.0 . 4
*
* @ param string $action The nonce action .
*/
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function wp_nonce_ays ( $action ) {
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$title = __ ( 'WordPress Failure Notice' );
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$html = esc_html ( wp_explain_nonce ( $action ) );
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if ( 'log-out' == $action )
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$html .= " </p><p> " . sprintf ( __ ( " Do you really want to <a href='%s'>log out</a>? " ), wp_logout_url () );
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elseif ( wp_get_referer () )
$html .= " </p><p><a href=' " . esc_url ( remove_query_arg ( 'updated' , wp_get_referer () ) ) . " '> " . __ ( 'Please try again.' ) . " </a> " ;
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wp_die ( $html , $title , array ( 'response' => 403 ) );
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}
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/**
* Kill WordPress execution and display HTML message with error message .
*
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* This function complements the die () PHP function . The difference is that
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* HTML will be displayed to the user . It is recommended to use this function
* only , when the execution should not continue any further . It is not
* recommended to call this function very often and try to handle as many errors
* as possible siliently .
*
* @ since 2.0 . 4
*
* @ param string $message Error message .
* @ param string $title Error title .
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* @ param string | array $args Optional arguements to control behaviour .
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*/
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function wp_die ( $message , $title = '' , $args = array () ) {
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if ( function_exists ( 'apply_filters' ) ) {
$function = apply_filters ( 'wp_die_handler' , '_default_wp_die_handler' );
} else {
$function = '_default_wp_die_handler' ;
}
call_user_func ( $function , $message , $title , $args );
}
/**
* Kill WordPress execution and display HTML message with error message .
*
* This is the default handler for wp_die if you want a custom one for your
* site then you can overload using the wp_die_handler filter in wp_die
*
* @ since 3.0 . 0
* @ private
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*
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* @ param string $message Error message .
* @ param string $title Error title .
* @ param string | array $args Optional arguements to control behaviour .
*/
function _default_wp_die_handler ( $message , $title = '' , $args = array () ) {
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global $wp_locale ;
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$defaults = array ( 'response' => 500 );
$r = wp_parse_args ( $args , $defaults );
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$have_gettext = function_exists ( '__' );
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if ( function_exists ( 'is_wp_error' ) && is_wp_error ( $message ) ) {
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if ( empty ( $title ) ) {
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$error_data = $message -> get_error_data ();
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if ( is_array ( $error_data ) && isset ( $error_data [ 'title' ] ) )
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$title = $error_data [ 'title' ];
}
$errors = $message -> get_error_messages ();
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switch ( count ( $errors ) ) :
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case 0 :
$message = '' ;
break ;
case 1 :
$message = " <p> { $errors [ 0 ] } </p> " ;
break ;
default :
$message = " <ul> \n \t \t <li> " . join ( " </li> \n \t \t <li> " , $errors ) . " </li> \n \t </ul> " ;
break ;
endswitch ;
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} elseif ( is_string ( $message ) ) {
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$message = " <p> $message </p> " ;
}
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if ( isset ( $r [ 'back_link' ] ) && $r [ 'back_link' ] ) {
$back_text = $have_gettext ? __ ( '« Back' ) : '« Back' ;
$message .= " \n <p><a href='javascript:history.back()'> $back_text </p> " ;
}
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if ( defined ( 'WP_SITEURL' ) && '' != WP_SITEURL )
$admin_dir = WP_SITEURL . '/wp-admin/' ;
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elseif ( function_exists ( 'get_bloginfo' ) && '' != get_bloginfo ( 'wpurl' ) )
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$admin_dir = get_bloginfo ( 'wpurl' ) . '/wp-admin/' ;
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elseif ( strpos ( $_SERVER [ 'PHP_SELF' ], 'wp-admin' ) !== false )
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$admin_dir = '' ;
else
$admin_dir = 'wp-admin/' ;
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if ( ! function_exists ( 'did_action' ) || ! did_action ( 'admin_head' ) ) :
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if ( ! headers_sent () ){
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status_header ( $r [ 'response' ] );
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nocache_headers ();
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header ( 'Content-Type: text/html; charset=utf-8' );
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}
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if ( empty ( $title ) ) {
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$title = $have_gettext ? __ ( 'WordPress › Error' ) : 'WordPress › Error' ;
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}
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$text_direction = 'ltr' ;
if ( isset ( $r [ 'text_direction' ]) && $r [ 'text_direction' ] == 'rtl' ) $text_direction = 'rtl' ;
if ( ( $wp_locale ) && ( 'rtl' == $wp_locale -> text_direction ) ) $text_direction = 'rtl' ;
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?>
<! DOCTYPE html PUBLIC " -//W3C//DTD XHTML 1.0 Transitional//EN " " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd " >
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< html xmlns = " http://www.w3.org/1999/xhtml " < ? php if ( function_exists ( 'language_attributes' ) ) language_attributes (); ?> >
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< head >
< meta http - equiv = " Content-Type " content = " text/html; charset=utf-8 " />
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< title >< ? php echo $title ?> </title>
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< link rel = " stylesheet " href = " <?php echo $admin_dir ; ?>css/install.css " type = " text/css " />
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< ? php
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if ( 'rtl' == $text_direction ) : ?>
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< link rel = " stylesheet " href = " <?php echo $admin_dir ; ?>css/install-rtl.css " type = " text/css " />
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< ? php endif ; ?>
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</ head >
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< body id = " error-page " >
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< ? php endif ; ?>
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< ? php echo $message ; ?>
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</ body >
</ html >
< ? php
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die ();
}
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/**
* Retrieve the WordPress home page URL .
*
* If the constant named 'WP_HOME' exists , then it willl be used and returned by
* the function . This can be used to counter the redirection on your local
* development environment .
*
* @ access private
* @ package WordPress
* @ since 2.2 . 0
*
* @ param string $url URL for the home location
* @ return string Homepage location .
*/
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function _config_wp_home ( $url = '' ) {
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if ( defined ( 'WP_HOME' ) )
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return WP_HOME ;
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return $url ;
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}
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/**
* Retrieve the WordPress site URL .
*
* If the constant named 'WP_SITEURL' is defined , then the value in that
* constant will always be returned . This can be used for debugging a site on
* your localhost while not having to change the database to your URL .
*
* @ access private
* @ package WordPress
* @ since 2.2 . 0
*
* @ param string $url URL to set the WordPress site location .
* @ return string The WordPress Site URL
*/
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function _config_wp_siteurl ( $url = '' ) {
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if ( defined ( 'WP_SITEURL' ) )
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return WP_SITEURL ;
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return $url ;
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}
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/**
* Set the localized direction for MCE plugin .
*
* Will only set the direction to 'rtl' , if the WordPress locale has the text
* direction set to 'rtl' .
*
* Fills in the 'directionality' , 'plugins' , and 'theme_advanced_button1' array
* keys . These keys are then returned in the $input array .
*
* @ access private
* @ package WordPress
* @ subpackage MCE
* @ since 2.1 . 0
*
* @ param array $input MCE plugin array .
* @ return array Direction set for 'rtl' , if needed by locale .
*/
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function _mce_set_direction ( $input ) {
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global $wp_locale ;
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if ( 'rtl' == $wp_locale -> text_direction ) {
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$input [ 'directionality' ] = 'rtl' ;
$input [ 'plugins' ] .= ',directionality' ;
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$input [ 'theme_advanced_buttons1' ] .= ',ltr' ;
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}
return $input ;
}
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/**
* Convert smiley code to the icon graphic file equivalent .
*
* You can turn off smilies , by going to the write setting screen and unchecking
* the box , or by setting 'use_smilies' option to false or removing the option .
*
* Plugins may override the default smiley list by setting the $wpsmiliestrans
* to an array , with the key the code the blogger types in and the value the
* image file .
*
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* The $wp_smiliessearch global is for the regular expression and is set each
* time the function is called .
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*
* The full list of smilies can be found in the function and won ' t be listed in
* the description . Probably should create a Codex page for it , so that it is
* available .
*
* @ global array $wpsmiliestrans
* @ global array $wp_smiliessearch
* @ since 2.2 . 0
*/
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function smilies_init () {
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global $wpsmiliestrans , $wp_smiliessearch ;
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// don't bother setting up smilies if they are disabled
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if ( ! get_option ( 'use_smilies' ) )
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return ;
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if ( ! isset ( $wpsmiliestrans ) ) {
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$wpsmiliestrans = array (
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':mrgreen:' => 'icon_mrgreen.gif' ,
':neutral:' => 'icon_neutral.gif' ,
':twisted:' => 'icon_twisted.gif' ,
':arrow:' => 'icon_arrow.gif' ,
':shock:' => 'icon_eek.gif' ,
':smile:' => 'icon_smile.gif' ,
':???:' => 'icon_confused.gif' ,
':cool:' => 'icon_cool.gif' ,
':evil:' => 'icon_evil.gif' ,
':grin:' => 'icon_biggrin.gif' ,
':idea:' => 'icon_idea.gif' ,
':oops:' => 'icon_redface.gif' ,
':razz:' => 'icon_razz.gif' ,
':roll:' => 'icon_rolleyes.gif' ,
':wink:' => 'icon_wink.gif' ,
':cry:' => 'icon_cry.gif' ,
':eek:' => 'icon_surprised.gif' ,
':lol:' => 'icon_lol.gif' ,
':mad:' => 'icon_mad.gif' ,
':sad:' => 'icon_sad.gif' ,
'8-)' => 'icon_cool.gif' ,
'8-O' => 'icon_eek.gif' ,
':-(' => 'icon_sad.gif' ,
':-)' => 'icon_smile.gif' ,
':-?' => 'icon_confused.gif' ,
':-D' => 'icon_biggrin.gif' ,
':-P' => 'icon_razz.gif' ,
':-o' => 'icon_surprised.gif' ,
':-x' => 'icon_mad.gif' ,
':-|' => 'icon_neutral.gif' ,
';-)' => 'icon_wink.gif' ,
'8)' => 'icon_cool.gif' ,
'8O' => 'icon_eek.gif' ,
':(' => 'icon_sad.gif' ,
':)' => 'icon_smile.gif' ,
':?' => 'icon_confused.gif' ,
':D' => 'icon_biggrin.gif' ,
':P' => 'icon_razz.gif' ,
':o' => 'icon_surprised.gif' ,
':x' => 'icon_mad.gif' ,
':|' => 'icon_neutral.gif' ,
';)' => 'icon_wink.gif' ,
':!:' => 'icon_exclaim.gif' ,
':?:' => 'icon_question.gif' ,
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);
}
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if ( count ( $wpsmiliestrans ) == 0 ) {
return ;
}
/*
* NOTE : we sort the smilies in reverse key order . This is to make sure
* we match the longest possible smilie ( : ? ? ? : vs : ? ) as the regular
* expression used below is first - match
*/
krsort ( $wpsmiliestrans );
$wp_smiliessearch = '/(?:\s|^)' ;
$subchar = '' ;
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foreach ( ( array ) $wpsmiliestrans as $smiley => $img ) {
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$firstchar = substr ( $smiley , 0 , 1 );
$rest = substr ( $smiley , 1 );
// new subpattern?
if ( $firstchar != $subchar ) {
if ( $subchar != '' ) {
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$wp_smiliessearch .= ')|(?:\s|^)' ;
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}
$subchar = $firstchar ;
$wp_smiliessearch .= preg_quote ( $firstchar , '/' ) . '(?:' ;
} else {
$wp_smiliessearch .= '|' ;
}
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$wp_smiliessearch .= preg_quote ( $rest , '/' );
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}
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$wp_smiliessearch .= ')(?:\s|$)/m' ;
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}
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/**
* Merge user defined arguments into defaults array .
*
* This function is used throughout WordPress to allow for both string or array
* to be merged into another array .
*
* @ since 2.2 . 0
*
* @ param string | array $args Value to merge with $defaults
* @ param array $defaults Array that serves as the defaults .
* @ return array Merged user defined values with defaults .
*/
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function wp_parse_args ( $args , $defaults = '' ) {
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if ( is_object ( $args ) )
$r = get_object_vars ( $args );
elseif ( is_array ( $args ) )
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$r =& $args ;
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else
wp_parse_str ( $args , $r );
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if ( is_array ( $defaults ) )
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return array_merge ( $defaults , $r );
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return $r ;
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}
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/**
* Clean up an array , comma - or space - separated list of IDs
*
* @ since 3.0 . 0
*
* @ param array | string $list
* @ return array Sanitized array of IDs
*/
function wp_parse_id_list ( $list ) {
if ( ! is_array ( $list ) )
$list = preg_split ( '/[\s,]+/' , $list );
return array_unique ( array_map ( 'absint' , $list ));
}
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/**
* Determines if default embed handlers should be loaded .
*
* Checks to make sure that the embeds library hasn ' t already been loaded . If
* it hasn ' t , then it will load the embeds library .
*
* @ since 2.9
*/
function wp_maybe_load_embeds () {
if ( ! apply_filters ( 'load_default_embeds' , true ) )
return ;
require_once ( ABSPATH . WPINC . '/default-embeds.php' );
}
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/**
* Determines if Widgets library should be loaded .
*
* Checks to make sure that the widgets library hasn ' t already been loaded . If
* it hasn ' t , then it will load the widgets library and run an action hook .
*
* @ since 2.2 . 0
* @ uses add_action () Calls '_admin_menu' hook with 'wp_widgets_add_menu' value .
*/
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function wp_maybe_load_widgets () {
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if ( ! apply_filters ( 'load_default_widgets' , true ) )
return ;
require_once ( ABSPATH . WPINC . '/default-widgets.php' );
add_action ( '_admin_menu' , 'wp_widgets_add_menu' );
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}
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/**
* Append the Widgets menu to the themes main menu .
*
* @ since 2.2 . 0
* @ uses $submenu The administration submenu list .
*/
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function wp_widgets_add_menu () {
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global $submenu ;
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$submenu [ 'themes.php' ][ 7 ] = array ( __ ( 'Widgets' ), 'switch_themes' , 'widgets.php' );
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ksort ( $submenu [ 'themes.php' ], SORT_NUMERIC );
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}
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/**
* Flush all output buffers for PHP 5.2 .
*
* Make sure all output buffers are flushed before our singletons our destroyed .
*
* @ since 2.2 . 0
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*/
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function wp_ob_end_flush_all () {
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$levels = ob_get_level ();
for ( $i = 0 ; $i < $levels ; $i ++ )
ob_end_flush ();
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}
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/**
* Load the correct database class file .
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*
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* This function is used to load the database class file either at runtime or by
* wp - admin / setup - config . php We must globalise $wpdb to ensure that it is
* defined globally by the inline code in wp - db . php .
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*
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* @ since 2.5 . 0
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* @ global $wpdb WordPress Database Object
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*/
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function require_wp_db () {
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global $wpdb ;
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if ( file_exists ( WP_CONTENT_DIR . '/db.php' ) )
require_once ( WP_CONTENT_DIR . '/db.php' );
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else
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require_once ( ABSPATH . WPINC . '/wp-db.php' );
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}
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/**
* Load custom DB error or display WordPress DB error .
*
* If a file exists in the wp - content directory named db - error . php , then it will
* be loaded instead of displaying the WordPress DB error . If it is not found ,
* then the WordPress DB error will be displayed instead .
*
* The WordPress DB error sets the HTTP status header to 500 to try to prevent
* search engines from caching the message . Custom DB messages should do the
* same .
*
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* This function was backported to the the WordPress 2.3 . 2 , but originally was
* added in WordPress 2.5 . 0.
*
* @ since 2.3 . 2
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* @ uses $wpdb
*/
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function dead_db () {
global $wpdb ;
// Load custom DB error template, if present.
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if ( file_exists ( WP_CONTENT_DIR . '/db-error.php' ) ) {
require_once ( WP_CONTENT_DIR . '/db-error.php' );
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die ();
}
// If installing or in the admin, provide the verbose message.
if ( defined ( 'WP_INSTALLING' ) || defined ( 'WP_ADMIN' ) )
wp_die ( $wpdb -> error );
// Otherwise, be terse.
status_header ( 500 );
nocache_headers ();
header ( 'Content-Type: text/html; charset=utf-8' );
?>
<! DOCTYPE html PUBLIC " -//W3C//DTD XHTML 1.0 Transitional//EN " " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd " >
< html xmlns = " http://www.w3.org/1999/xhtml " < ? php if ( function_exists ( 'language_attributes' ) ) language_attributes (); ?> >
< head >
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< meta http - equiv = " Content-Type " content = " text/html; charset=utf-8 " />
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< title > Database Error </ title >
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</ head >
< body >
< h1 > Error establishing a database connection </ h1 >
</ body >
</ html >
< ? php
die ();
}
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/**
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* Converts value to nonnegative integer .
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*
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* @ since 2.5 . 0
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*
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* @ param mixed $maybeint Data you wish to have convered to an nonnegative integer
* @ return int An nonnegative integer
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*/
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function absint ( $maybeint ) {
return abs ( intval ( $maybeint ) );
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}
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/**
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* Determines if the blog can be accessed over SSL .
*
* Determines if blog can be accessed over SSL by using cURL to access the site
* using the https in the siteurl . Requires cURL extension to work correctly .
*
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* @ since 2.5 . 0
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*
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* @ param string $url
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* @ return bool Whether SSL access is available
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*/
function url_is_accessable_via_ssl ( $url )
{
if ( in_array ( 'curl' , get_loaded_extensions ())) {
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$ssl = preg_replace ( '/^http:\/\//' , 'https://' , $url );
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$ch = curl_init ();
curl_setopt ( $ch , CURLOPT_URL , $ssl );
curl_setopt ( $ch , CURLOPT_FAILONERROR , true );
curl_setopt ( $ch , CURLOPT_RETURNTRANSFER , true );
curl_setopt ( $ch , CURLOPT_SSL_VERIFYPEER , false );
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curl_setopt ( $ch , CURLOPT_CONNECTTIMEOUT , 5 );
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curl_exec ( $ch );
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$status = curl_getinfo ( $ch , CURLINFO_HTTP_CODE );
curl_close ( $ch );
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if ( $status == 200 || $status == 401 ) {
return true ;
}
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}
return false ;
}
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/**
* Secure URL , if available or the given URL .
*
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* @ since 2.5 . 0
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*
* @ param string $url Complete URL path with transport .
* @ return string Secure or regular URL path .
*/
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function atom_service_url_filter ( $url )
{
if ( url_is_accessable_via_ssl ( $url ) )
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return preg_replace ( '/^http:\/\//' , 'https://' , $url );
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else
return $url ;
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}
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/**
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* Marks a function as deprecated and informs when it has been used .
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*
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* There is a hook deprecated_function_run that will be called that can be used
* to get the backtrace up to what file and function called the deprecated
* function .
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*
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* The current behavior is to trigger an user error if WP_DEBUG is true .
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*
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* This function is to be used in every function in depreceated . php
*
* @ package WordPress
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* @ subpackage Debug
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* @ since 2.5 . 0
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* @ access private
*
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* @ uses do_action () Calls 'deprecated_function_run' and passes the function name , what to use instead ,
* and the version the function was deprecated in .
* @ uses apply_filters () Calls 'deprecated_function_trigger_error' and expects boolean value of true to do
* trigger or false to not trigger error .
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*
* @ param string $function The function that was called
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* @ param string $version The version of WordPress that deprecated the function
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* @ param string $replacement Optional . The function that should have been called
*/
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function _deprecated_function ( $function , $version , $replacement = null ) {
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do_action ( 'deprecated_function_run' , $function , $replacement , $version );
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// Allow plugin to filter the output error trigger
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if ( WP_DEBUG && apply_filters ( 'deprecated_function_trigger_error' , true ) ) {
if ( ! is_null ( $replacement ) )
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trigger_error ( sprintf ( __ ( '%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.' ), $function , $version , $replacement ) );
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else
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trigger_error ( sprintf ( __ ( '%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.' ), $function , $version ) );
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}
}
/**
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* Marks a file as deprecated and informs when it has been used .
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*
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* There is a hook deprecated_file_included that will be called that can be used
* to get the backtrace up to what file and function included the deprecated
* file .
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*
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* The current behavior is to trigger an user error if WP_DEBUG is true .
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*
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* This function is to be used in every file that is depreceated
*
* @ package WordPress
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* @ subpackage Debug
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* @ since 2.5 . 0
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* @ access private
*
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* @ uses do_action () Calls 'deprecated_file_included' and passes the file name , what to use instead ,
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* the version in which the file was deprecated , and any message regarding the change .
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* @ uses apply_filters () Calls 'deprecated_file_trigger_error' and expects boolean value of true to do
* trigger or false to not trigger error .
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*
* @ param string $file The file that was included
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* @ param string $version The version of WordPress that deprecated the file
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* @ param string $replacement Optional . The file that should have been included based on ABSPATH
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* @ param string $message Optional . A message regarding the change
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*/
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function _deprecated_file ( $file , $version , $replacement = null , $message = '' ) {
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do_action ( 'deprecated_file_included' , $file , $replacement , $version , $message );
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// Allow plugin to filter the output error trigger
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if ( WP_DEBUG && apply_filters ( 'deprecated_file_trigger_error' , true ) ) {
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$message = empty ( $message ) ? '' : ' ' . $message ;
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if ( ! is_null ( $replacement ) )
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trigger_error ( sprintf ( __ ( '%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.' ), $file , $version , $replacement ) . $message );
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else
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trigger_error ( sprintf ( __ ( '%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.' ), $file , $version ) . $message );
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}
}
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/**
* Marks a function argument as deprecated and informs when it has been used .
*
* This function is to be used whenever a deprecated function argument is used .
* Before this function is called , the argument must be checked for whether it was
* used by comparing it to its default value or evaluating whether it is empty .
* For example :
* < code >
* if ( ! empty ( $deprecated ) )
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* _deprecated_argument ( __FUNCTION__ , '3.0' );
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* </ code >
*
* There is a hook deprecated_argument_run that will be called that can be used
* to get the backtrace up to what file and function used the deprecated
* argument .
*
* The current behavior is to trigger an user error if WP_DEBUG is true .
*
* @ package WordPress
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* @ subpackage Debug
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* @ since 3.0 . 0
* @ access private
*
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* @ uses do_action () Calls 'deprecated_argument_run' and passes the function name , a message on the change ,
* and the version in which the argument was deprecated .
* @ uses apply_filters () Calls 'deprecated_argument_trigger_error' and expects boolean value of true to do
* trigger or false to not trigger error .
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*
* @ param string $function The function that was called
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* @ param string $version The version of WordPress that deprecated the argument used
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* @ param string $message Optional . A message regarding the change .
*/
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function _deprecated_argument ( $function , $version , $message = null ) {
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do_action ( 'deprecated_argument_run' , $function , $message , $version );
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// Allow plugin to filter the output error trigger
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if ( WP_DEBUG && apply_filters ( 'deprecated_argument_trigger_error' , true ) ) {
if ( ! is_null ( $message ) )
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trigger_error ( sprintf ( __ ( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s' ), $function , $version , $message ) );
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else
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trigger_error ( sprintf ( __ ( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.' ), $function , $version ) );
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}
}
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/**
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* Is the server running earlier than 1.5 . 0 version of lighttpd
*
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* @ since 2.5 . 0
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*
* @ return bool Whether the server is running lighttpd < 1.5 . 0
*/
function is_lighttpd_before_150 () {
$server_parts = explode ( '/' , isset ( $_SERVER [ 'SERVER_SOFTWARE' ] ) ? $_SERVER [ 'SERVER_SOFTWARE' ] : '' );
$server_parts [ 1 ] = isset ( $server_parts [ 1 ] ) ? $server_parts [ 1 ] : '' ;
return 'lighttpd' == $server_parts [ 0 ] && - 1 == version_compare ( $server_parts [ 1 ], '1.5.0' );
}
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/**
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* Does the specified module exist in the apache config ?
*
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* @ since 2.5 . 0
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*
* @ param string $mod e . g . mod_rewrite
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* @ param bool $default The default return value if the module is not found
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* @ return bool
*/
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function apache_mod_loaded ( $mod , $default = false ) {
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global $is_apache ;
if ( ! $is_apache )
return false ;
if ( function_exists ( 'apache_get_modules' ) ) {
$mods = apache_get_modules ();
if ( in_array ( $mod , $mods ) )
return true ;
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} elseif ( function_exists ( 'phpinfo' ) ) {
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ob_start ();
phpinfo ( 8 );
$phpinfo = ob_get_clean ();
if ( false !== strpos ( $phpinfo , $mod ) )
return true ;
}
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return $default ;
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}
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/**
* File validates against allowed set of defined rules .
*
* A return value of '1' means that the $file contains either '..' or './' . A
* return value of '2' means that the $file contains ':' after the first
* character . A return value of '3' means that the file is not in the allowed
* files list .
*
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* @ since 1.2 . 0
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*
* @ param string $file File path .
* @ param array $allowed_files List of allowed files .
* @ return int 0 means nothing is wrong , greater than 0 means something was wrong .
*/
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function validate_file ( $file , $allowed_files = '' ) {
if ( false !== strpos ( $file , '..' ))
return 1 ;
if ( false !== strpos ( $file , './' ))
return 1 ;
if ( ! empty ( $allowed_files ) && ( ! in_array ( $file , $allowed_files ) ) )
return 3 ;
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if ( ':' == substr ( $file , 1 , 1 ))
return 2 ;
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return 0 ;
}
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/**
* Determine if SSL is used .
*
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* @ since 2.6 . 0
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*
* @ return bool True if SSL , false if not used .
*/
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function is_ssl () {
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if ( isset ( $_SERVER [ 'HTTPS' ]) ) {
if ( 'on' == strtolower ( $_SERVER [ 'HTTPS' ]) )
return true ;
if ( '1' == $_SERVER [ 'HTTPS' ] )
return true ;
} elseif ( isset ( $_SERVER [ 'SERVER_PORT' ]) && ( '443' == $_SERVER [ 'SERVER_PORT' ] ) ) {
return true ;
}
return false ;
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}
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/**
* Whether SSL login should be forced .
*
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* @ since 2.6 . 0
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*
* @ param string | bool $force Optional .
* @ return bool True if forced , false if not forced .
*/
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function force_ssl_login ( $force = null ) {
static $forced = false ;
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if ( ! is_null ( $force ) ) {
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$old_forced = $forced ;
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$forced = $force ;
return $old_forced ;
}
return $forced ;
}
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/**
* Whether to force SSL used for the Administration Panels .
*
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* @ since 2.6 . 0
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*
* @ param string | bool $force
* @ return bool True if forced , false if not forced .
*/
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function force_ssl_admin ( $force = null ) {
static $forced = false ;
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if ( ! is_null ( $force ) ) {
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$old_forced = $forced ;
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$forced = $force ;
return $old_forced ;
}
return $forced ;
}
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/**
* Guess the URL for the site .
*
* Will remove wp - admin links to retrieve only return URLs not in the wp - admin
* directory .
*
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* @ since 2.6 . 0
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*
* @ return string
*/
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function wp_guess_url () {
if ( defined ( 'WP_SITEURL' ) && '' != WP_SITEURL ) {
$url = WP_SITEURL ;
} else {
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$schema = is_ssl () ? 'https://' : 'http://' ;
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$url = preg_replace ( '|/wp-admin/.*|i' , '' , $schema . $_SERVER [ 'HTTP_HOST' ] . $_SERVER [ 'REQUEST_URI' ]);
}
return $url ;
}
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/**
* Suspend cache invalidation .
*
* Turns cache invalidation on and off . Useful during imports where you don ' t wont to do invalidations
* every time a post is inserted . Callers must be sure that what they are doing won ' t lead to an inconsistent
* cache when invalidation is suspended .
*
* @ since 2.7 . 0
*
* @ param bool $suspend Whether to suspend or enable cache invalidation
* @ return bool The current suspend setting
*/
function wp_suspend_cache_invalidation ( $suspend = true ) {
global $_wp_suspend_cache_invalidation ;
$current_suspend = $_wp_suspend_cache_invalidation ;
$_wp_suspend_cache_invalidation = $suspend ;
return $current_suspend ;
}
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/**
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* Retrieve site option value based on name of option .
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*
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* @ see get_option ()
* @ package WordPress
* @ subpackage Option
* @ since 2.8 . 0
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*
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* @ uses apply_filters () Calls 'pre_site_option_$option' before checking the option .
* Any value other than false will " short-circuit " the retrieval of the option
* and return the returned value .
* @ uses apply_filters () Calls 'site_option_$option' , after checking the option , with
* the option value .
*
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* @ param string $option Name of option to retrieve . Should already be SQL - escaped
* @ param mixed $default Optional value to return if option doesn ' t exist . Default false .
* @ param bool $use_cache Whether to use cache . Multisite only . Default true .
* @ return mixed Value set for the option .
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*/
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function get_site_option ( $option , $default = false , $use_cache = true ) {
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global $wpdb ;
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// Allow plugins to short-circuit site options.
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$pre = apply_filters ( 'pre_site_option_' . $option , false );
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if ( false !== $pre )
return $pre ;
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if ( ! is_multisite () ) {
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$value = get_option ( $option , $default );
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} else {
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$cache_key = " { $wpdb -> siteid } : $option " ;
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if ( $use_cache )
$value = wp_cache_get ( $cache_key , 'site-options' );
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if ( false === $value ) {
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$value = $wpdb -> get_var ( $wpdb -> prepare ( " SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d " , $option , $wpdb -> siteid ) );
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if ( is_null ( $value ) )
$value = $default ;
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$value = maybe_unserialize ( $value );
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wp_cache_set ( $cache_key , $value , 'site-options' );
}
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}
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return apply_filters ( 'site_option_' . $option , $value );
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}
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/**
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* Add a new site option .
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*
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* @ see add_option ()
* @ package WordPress
* @ subpackage Option
* @ since 2.8 . 0
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*
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* @ uses apply_filters () Calls 'pre_add_site_option_$option' hook to allow overwriting the
* option value to be stored .
* @ uses do_action () Calls 'add_site_option_$option' and 'add_site_option' hooks on success .
*
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* @ param string $option Name of option to add . Expects to not be SQL escaped .
* @ param mixed $value Optional . Option value , can be anything .
* @ return bool False if option was not added and true if option was added .
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*/
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function add_site_option ( $option , $value ) {
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global $wpdb ;
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$value = apply_filters ( 'pre_add_site_option_' . $option , $value );
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if ( ! is_multisite () ) {
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$result = add_option ( $option , $value );
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} else {
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$cache_key = " { $wpdb -> siteid } : $option " ;
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if ( $wpdb -> get_row ( $wpdb -> prepare ( " SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d " , $option , $wpdb -> siteid ) ) )
return update_site_option ( $option , $value );
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$value = sanitize_option ( $option , $value );
wp_cache_set ( $cache_key , $value , 'site-options' );
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$value = maybe_serialize ( $value );
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$result = $wpdb -> insert ( $wpdb -> sitemeta , array ( 'site_id' => $wpdb -> siteid , 'meta_key' => $option , 'meta_value' => $value ) );
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}
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do_action ( " add_site_option_ { $option } " , $option , $value );
do_action ( " add_site_option " , $option , $value );
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return $result ;
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}
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/**
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* Removes site option by name .
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*
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* @ see delete_option ()
* @ package WordPress
* @ subpackage Option
* @ since 2.8 . 0
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*
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* @ uses do_action () Calls 'pre_delete_site_option_$option' hook before option is deleted .
* @ uses do_action () Calls 'delete_site_option' and 'delete_site_option_$option'
* hooks on success .
*
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* @ param string $option Name of option to remove . Expected to be SQL - escaped .
* @ return bool True , if succeed . False , if failure .
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*/
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function delete_site_option ( $option ) {
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global $wpdb ;
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// ms_protect_special_option( $option ); @todo
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do_action ( 'pre_delete_site_option_' . $option );
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if ( ! is_multisite () ) {
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$result = delete_option ( $option );
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} else {
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$row = $wpdb -> get_row ( $wpdb -> prepare ( " SELECT meta_id FROM { $wpdb -> sitemeta } WHERE meta_key = %s AND site_id = %d " , $option , $wpdb -> siteid ) );
if ( is_null ( $row ) || ! $row -> meta_id )
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return false ;
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$cache_key = " { $wpdb -> siteid } : $option " ;
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wp_cache_delete ( $cache_key , 'site-options' );
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$result = $wpdb -> query ( $wpdb -> prepare ( " DELETE FROM { $wpdb -> sitemeta } WHERE meta_key = %s AND site_id = %d " , $option , $wpdb -> siteid ) );
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}
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if ( $result ) {
do_action ( " delete_site_option_ { $option } " , $option );
do_action ( " delete_site_option " , $option );
return true ;
}
return false ;
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}
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/**
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* Update the value of a site option that was already added .
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*
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* @ see update_option ()
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* @ since 2.8 . 0
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* @ package WordPress
* @ subpackage Option
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*
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* @ uses apply_filters () Calls 'pre_update_site_option_$option' hook to allow overwriting the
* option value to be stored .
* @ uses do_action () Calls 'update_site_option_$option' and 'update_site_option' hooks on success .
*
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* @ param string $option Name of option . Expected to not be SQL - escaped
* @ param mixed $value Option value .
* @ return bool False if value was not updated and true if value was updated .
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*/
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function update_site_option ( $option , $value ) {
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global $wpdb ;
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$oldvalue = get_site_option ( $option );
$value = apply_filters ( 'pre_update_site_option_' . $option , $value , $oldvalue );
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if ( $value === $oldvalue )
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return false ;
if ( ! is_multisite () ) {
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$result = update_option ( $option , $value );
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} else {
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$cache_key = " { $wpdb -> siteid } : $option " ;
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if ( $value && ! $wpdb -> get_row ( $wpdb -> prepare ( " SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d " , $option , $wpdb -> siteid ) ) )
return add_site_option ( $option , $value );
$value = sanitize_option ( $option , $value );
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wp_cache_set ( $cache_key , $value , 'site-options' );
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$value = maybe_serialize ( $value );
$result = $wpdb -> update ( $wpdb -> sitemeta , array ( 'meta_value' => $value ), array ( 'site_id' => $wpdb -> siteid , 'meta_key' => $option ) );
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}
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if ( $result ) {
do_action ( " update_site_option_ { $option } " , $option , $value );
do_action ( " update_site_option " , $option , $value );
return true ;
}
return false ;
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}
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/**
* Delete a site transient
*
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* @ since 2.9 . 0
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* @ package WordPress
* @ subpackage Transient
*
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* @ uses do_action () Calls 'delete_site_transient_$transient' hook before transient is deleted .
* @ uses do_action () Calls 'deleted_site_transient' hook on success .
*
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* @ param string $transient Transient name . Expected to not be SQL - escaped
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* @ return bool True if successful , false otherwise
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*/
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function delete_site_transient ( $transient ) {
global $_wp_using_ext_object_cache ;
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do_action ( 'delete_site_transient_' . $transient , $transient );
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if ( $_wp_using_ext_object_cache ) {
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$result = wp_cache_delete ( $transient , 'site-transient' );
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} else {
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$option = '_site_transient_' . esc_sql ( $transient );
$result = delete_site_option ( $option );
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}
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if ( $result )
do_action ( 'deleted_site_transient' , $transient );
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return $result ;
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}
/**
* Get the value of a site transient
*
* If the transient does not exist or does not have a value , then the return value
* will be false .
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*
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* @ see get_transient ()
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* @ since 2.9 . 0
* @ package WordPress
* @ subpackage Transient
*
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* @ uses apply_filters () Calls 'pre_site_transient_$transient' hook before checking the transient .
* Any value other than false will " short-circuit " the retrieval of the transient
* and return the returned value .
* @ uses apply_filters () Calls 'site_transient_$option' hook , after checking the transient , with
* the transient value .
*
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* @ param string $transient Transient name . Expected to not be SQL - escaped
* @ return mixed Value of transient
*/
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function get_site_transient ( $transient ) {
global $_wp_using_ext_object_cache ;
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$pre = apply_filters ( 'pre_site_transient_' . $transient , false );
if ( false !== $pre )
return $pre ;
if ( $_wp_using_ext_object_cache ) {
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$value = wp_cache_get ( $transient , 'site-transient' );
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} else {
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// Core transients that do not have a timeout. Listed here so querying timeouts can be avoided.
$no_timeout = array ( 'update_core' , 'update_plugins' , 'update_themes' );
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$transient_option = '_site_transient_' . esc_sql ( $transient );
if ( ! in_array ( $transient , $no_timeout ) ) {
$transient_timeout = '_site_transient_timeout_' . esc_sql ( $transient );
$timeout = get_site_option ( $transient_timeout );
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if ( false !== $timeout && $timeout < time () ) {
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delete_site_option ( $transient_option );
delete_site_option ( $transient_timeout );
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return false ;
}
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}
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$value = get_site_option ( $transient_option );
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}
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return apply_filters ( 'site_transient_' . $transient , $value );
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}
/**
* Set / update the value of a site transient
*
* You do not need to serialize values , if the value needs to be serialize , then
* it will be serialized before it is set .
*
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* @ see set_transient ()
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* @ since 2.9 . 0
* @ package WordPress
* @ subpackage Transient
*
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* @ uses apply_filters () Calls 'pre_set_site_transient_$transient' hook to allow overwriting the
* transient value to be stored .
* @ uses do_action () Calls 'set_site_transient_$transient' and 'setted_site_transient' hooks on success .
*
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* @ param string $transient Transient name . Expected to not be SQL - escaped
* @ param mixed $value Transient value .
* @ param int $expiration Time until expiration in seconds , default 0
* @ return bool False if value was not set and true if value was set .
*/
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function set_site_transient ( $transient , $value , $expiration = 0 ) {
global $_wp_using_ext_object_cache ;
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$value = apply_filters ( 'pre_set_site_transient_' . $transient , $value );
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if ( $_wp_using_ext_object_cache ) {
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$result = wp_cache_set ( $transient , $value , 'site-transient' , $expiration );
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} else {
$transient_timeout = '_site_transient_timeout_' . $transient ;
$transient = '_site_transient_' . $transient ;
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$safe_transient = esc_sql ( $transient );
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if ( false === get_site_option ( $safe_transient ) ) {
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if ( $expiration )
add_site_option ( $transient_timeout , time () + $expiration );
$result = add_site_option ( $transient , $value );
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} else {
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if ( $expiration )
update_site_option ( $transient_timeout , time () + $expiration );
$result = update_site_option ( $transient , $value );
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}
}
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if ( $result ) {
do_action ( 'set_site_transient_' . $transient );
do_action ( 'setted_site_transient' , $transient );
}
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return $result ;
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}
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/**
* is main site
*
*
* @ since 3.0 . 0
* @ package WordPress
*
* @ param int $blog_id optional blog id to test ( default current blog )
* @ return bool True if not multisite or $blog_id is main site
*/
function is_main_site ( $blog_id = '' ) {
global $current_site , $current_blog ;
if ( ! is_multisite () )
return true ;
if ( ! $blog_id )
$blog_id = $current_blog -> blog_id ;
return $blog_id == $current_site -> blog_id ;
}
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/**
* gmt_offset modification for smart timezone handling
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*
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* Overrides the gmt_offset option if we have a timezone_string available
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*
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* @ since 2.8 . 0
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*
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* @ return float | bool
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*/
function wp_timezone_override_offset () {
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if ( ! wp_timezone_supported () ) {
return false ;
}
if ( ! $timezone_string = get_option ( 'timezone_string' ) ) {
return false ;
}
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$timezone_object = timezone_open ( $timezone_string );
$datetime_object = date_create ();
if ( false === $timezone_object || false === $datetime_object ) {
return false ;
}
return round ( timezone_offset_get ( $timezone_object , $datetime_object ) / 3600 , 2 );
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}
/**
* Check for PHP timezone support
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*
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* @ since 2.9 . 0
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*
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* @ return bool
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*/
function wp_timezone_supported () {
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$support = false ;
if (
function_exists ( 'date_default_timezone_set' ) &&
function_exists ( 'timezone_identifiers_list' ) &&
function_exists ( 'timezone_open' ) &&
function_exists ( 'timezone_offset_get' )
) {
$support = true ;
}
return apply_filters ( 'timezone_support' , $support );
}
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/**
* { @ internal Missing Short Description }}
*
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* @ since 2.9 . 0
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*
* @ param unknown_type $a
* @ param unknown_type $b
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* @ return int
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*/
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function _wp_timezone_choice_usort_callback ( $a , $b ) {
// Don't use translated versions of Etc
if ( 'Etc' === $a [ 'continent' ] && 'Etc' === $b [ 'continent' ] ) {
// Make the order of these more like the old dropdown
if ( 'GMT+' === substr ( $a [ 'city' ], 0 , 4 ) && 'GMT+' === substr ( $b [ 'city' ], 0 , 4 ) ) {
return - 1 * ( strnatcasecmp ( $a [ 'city' ], $b [ 'city' ] ) );
}
if ( 'UTC' === $a [ 'city' ] ) {
if ( 'GMT+' === substr ( $b [ 'city' ], 0 , 4 ) ) {
return 1 ;
}
return - 1 ;
}
if ( 'UTC' === $b [ 'city' ] ) {
if ( 'GMT+' === substr ( $a [ 'city' ], 0 , 4 ) ) {
return - 1 ;
}
return 1 ;
}
return strnatcasecmp ( $a [ 'city' ], $b [ 'city' ] );
}
if ( $a [ 't_continent' ] == $b [ 't_continent' ] ) {
if ( $a [ 't_city' ] == $b [ 't_city' ] ) {
return strnatcasecmp ( $a [ 't_subcity' ], $b [ 't_subcity' ] );
}
return strnatcasecmp ( $a [ 't_city' ], $b [ 't_city' ] );
} else {
// Force Etc to the bottom of the list
if ( 'Etc' === $a [ 'continent' ] ) {
return 1 ;
}
if ( 'Etc' === $b [ 'continent' ] ) {
return - 1 ;
}
return strnatcasecmp ( $a [ 't_continent' ], $b [ 't_continent' ] );
}
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}
/**
* Gives a nicely formatted list of timezone strings // temporary! Not in final
*
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* @ since 2.9 . 0
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*
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* @ param string $selected_zone Selected Zone
* @ return string
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*/
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function wp_timezone_choice ( $selected_zone ) {
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static $mo_loaded = false ;
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$continents = array ( 'Africa' , 'America' , 'Antarctica' , 'Arctic' , 'Asia' , 'Atlantic' , 'Australia' , 'Europe' , 'Indian' , 'Pacific' );
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// Load translations for continents and cities
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if ( ! $mo_loaded ) {
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$locale = get_locale ();
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$mofile = WP_LANG_DIR . '/continents-cities-' . $locale . '.mo' ;
load_textdomain ( 'continents-cities' , $mofile );
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$mo_loaded = true ;
}
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$zonen = array ();
foreach ( timezone_identifiers_list () as $zone ) {
$zone = explode ( '/' , $zone );
if ( ! in_array ( $zone [ 0 ], $continents ) ) {
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continue ;
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}
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// This determines what gets set and translated - we don't translate Etc/* strings here, they are done later
$exists = array (
0 => ( isset ( $zone [ 0 ] ) && $zone [ 0 ] ) ? true : false ,
1 => ( isset ( $zone [ 1 ] ) && $zone [ 1 ] ) ? true : false ,
2 => ( isset ( $zone [ 2 ] ) && $zone [ 2 ] ) ? true : false
);
$exists [ 3 ] = ( $exists [ 0 ] && 'Etc' !== $zone [ 0 ] ) ? true : false ;
$exists [ 4 ] = ( $exists [ 1 ] && $exists [ 3 ] ) ? true : false ;
$exists [ 5 ] = ( $exists [ 2 ] && $exists [ 3 ] ) ? true : false ;
$zonen [] = array (
'continent' => ( $exists [ 0 ] ? $zone [ 0 ] : '' ),
'city' => ( $exists [ 1 ] ? $zone [ 1 ] : '' ),
'subcity' => ( $exists [ 2 ] ? $zone [ 2 ] : '' ),
't_continent' => ( $exists [ 3 ] ? translate ( str_replace ( '_' , ' ' , $zone [ 0 ] ), 'continents-cities' ) : '' ),
't_city' => ( $exists [ 4 ] ? translate ( str_replace ( '_' , ' ' , $zone [ 1 ] ), 'continents-cities' ) : '' ),
't_subcity' => ( $exists [ 5 ] ? translate ( str_replace ( '_' , ' ' , $zone [ 2 ] ), 'continents-cities' ) : '' )
);
}
usort ( $zonen , '_wp_timezone_choice_usort_callback' );
$structure = array ();
if ( empty ( $selected_zone ) ) {
$structure [] = '<option selected="selected" value="">' . __ ( 'Select a city' ) . '</option>' ;
}
foreach ( $zonen as $key => $zone ) {
// Build value in an array to join later
$value = array ( $zone [ 'continent' ] );
if ( empty ( $zone [ 'city' ] ) ) {
// It's at the continent level (generally won't happen)
$display = $zone [ 't_continent' ];
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} else {
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// It's inside a continent group
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// Continent optgroup
if ( ! isset ( $zonen [ $key - 1 ] ) || $zonen [ $key - 1 ][ 'continent' ] !== $zone [ 'continent' ] ) {
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$label = $zone [ 't_continent' ];
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$structure [] = '<optgroup label="' . esc_attr ( $label ) . '">' ;
}
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// Add the city to the value
$value [] = $zone [ 'city' ];
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$display = $zone [ 't_city' ];
if ( ! empty ( $zone [ 'subcity' ] ) ) {
// Add the subcity to the value
$value [] = $zone [ 'subcity' ];
$display .= ' - ' . $zone [ 't_subcity' ];
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}
}
// Build the value
$value = join ( '/' , $value );
$selected = '' ;
if ( $value === $selected_zone ) {
$selected = 'selected="selected" ' ;
}
$structure [] = '<option ' . $selected . 'value="' . esc_attr ( $value ) . '">' . esc_html ( $display ) . " </option> " ;
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// Close continent optgroup
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if ( ! empty ( $zone [ 'city' ] ) && ( ! isset ( $zonen [ $key + 1 ]) || ( isset ( $zonen [ $key + 1 ] ) && $zonen [ $key + 1 ][ 'continent' ] !== $zone [ 'continent' ]) ) ) {
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$structure [] = '</optgroup>' ;
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}
}
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// Do UTC
$structure [] = '<optgroup label="' . esc_attr__ ( 'UTC' ) . '">' ;
$selected = '' ;
if ( 'UTC' === $selected_zone )
$selected = 'selected="selected" ' ;
$structure [] = '<option ' . $selected . 'value="' . esc_attr ( 'UTC' ) . '">' . __ ( 'UTC' ) . '</option>' ;
$structure [] = '</optgroup>' ;
// Do manual UTC offsets
$structure [] = '<optgroup label="' . esc_attr__ ( 'Manual Offsets' ) . '">' ;
$offset_range = array ( - 12 , - 11.5 , - 11 , - 10.5 , - 10 , - 9.5 , - 9 , - 8.5 , - 8 , - 7.5 , - 7 , - 6.5 , - 6 , - 5.5 , - 5 , - 4.5 , - 4 , - 3.5 , - 3 , - 2.5 , - 2 , - 1.5 , - 1 , - 0.5 ,
0 , 0.5 , 1 , 1.5 , 2 , 2.5 , 3 , 3.5 , 4 , 4.5 , 5 , 5.5 , 5.75 , 6 , 6.5 , 7 , 7.5 , 8 , 8.5 , 8.75 , 9 , 9.5 , 10 , 10.5 , 11 , 11.5 , 12 , 12.75 , 13 , 13.75 , 14 );
foreach ( $offset_range as $offset ) {
if ( 0 <= $offset )
$offset_name = '+' . $offset ;
else
$offset_name = ( string ) $offset ;
$offset_value = $offset_name ;
$offset_name = str_replace ( array ( '.25' , '.5' , '.75' ), array ( ':15' , ':30' , ':45' ), $offset_name );
$offset_name = 'UTC' . $offset_name ;
$offset_value = 'UTC' . $offset_value ;
$selected = '' ;
if ( $offset_value === $selected_zone )
$selected = 'selected="selected" ' ;
$structure [] = '<option ' . $selected . 'value="' . esc_attr ( $offset_value ) . '">' . esc_html ( $offset_name ) . " </option> " ;
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}
$structure [] = '</optgroup>' ;
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return join ( " \n " , $structure );
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}
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/**
* Strip close comment and close php tags from file headers used by WP
* See http :// core . trac . wordpress . org / ticket / 8497
*
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* @ since 2.8 . 0
*
* @ param string $str
* @ return string
*/
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function _cleanup_header_comment ( $str ) {
return trim ( preg_replace ( " / \ s*(?: \ * \ /| \ ?>).*/ " , '' , $str ));
}
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/**
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* Permanently deletes posts , pages , attachments , and comments which have been in the trash for EMPTY_TRASH_DAYS .
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*
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* @ since 2.9 . 0
*/
function wp_scheduled_delete () {
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global $wpdb ;
$delete_timestamp = time () - ( 60 * 60 * 24 * EMPTY_TRASH_DAYS );
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$posts_to_delete = $wpdb -> get_results ( $wpdb -> prepare ( " SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d' " , $delete_timestamp ), ARRAY_A );
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foreach ( ( array ) $posts_to_delete as $post ) {
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$post_id = ( int ) $post [ 'post_id' ];
if ( ! $post_id )
continue ;
$del_post = get_post ( $post_id );
if ( ! $del_post || 'trash' != $del_post -> post_status ) {
delete_post_meta ( $post_id , '_wp_trash_meta_status' );
delete_post_meta ( $post_id , '_wp_trash_meta_time' );
} else {
wp_delete_post ( $post_id );
}
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}
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$comments_to_delete = $wpdb -> get_results ( $wpdb -> prepare ( " SELECT comment_id FROM $wpdb->commentmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d' " , $delete_timestamp ), ARRAY_A );
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foreach ( ( array ) $comments_to_delete as $comment ) {
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$comment_id = ( int ) $comment [ 'comment_id' ];
if ( ! $comment_id )
continue ;
$del_comment = get_comment ( $comment_id );
if ( ! $del_comment || 'trash' != $del_comment -> comment_approved ) {
delete_comment_meta ( $comment_id , '_wp_trash_meta_time' );
delete_comment_meta ( $comment_id , '_wp_trash_meta_status' );
} else {
wp_delete_comment ( $comment_id );
}
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}
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}
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/**
* Parse the file contents to retrieve its metadata .
*
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* Searches for metadata for a file , such as a plugin or theme . Each piece of
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* metadata must be on its own line . For a field spanning multple lines , it
* must not have any newlines or only parts of it will be displayed .
*
* Some users have issues with opening large files and manipulating the contents
* for want is usually the first 1 kiB or 2 kiB . This function stops pulling in
* the file contents when it has all of the required data .
*
* The first 8 kiB of the file will be pulled in and if the file data is not
* within that first 8 kiB , then the author should correct their plugin file
* and move the data headers to the top .
*
* The file is assumed to have permissions to allow for scripts to read
* the file . This is not checked however and the file is only opened for
* reading .
*
* @ since 2.9 . 0
*
* @ param string $file Path to the file
* @ param bool $markup If the returned data should have HTML markup applied
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* @ param string $context If specified adds filter hook " extra_< $context >_headers "
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*/
function get_file_data ( $file , $default_headers , $context = '' ) {
// We don't need to write to the file, so just open for reading.
$fp = fopen ( $file , 'r' );
// Pull only the first 8kiB of the file in.
$file_data = fread ( $fp , 8192 );
// PHP will close file handle, but we are good citizens.
fclose ( $fp );
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if ( $context != '' ) {
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$extra_headers = apply_filters ( " extra_ $context " . '_headers' , array () );
$extra_headers = array_flip ( $extra_headers );
foreach ( $extra_headers as $key => $value ) {
$extra_headers [ $key ] = $key ;
}
$all_headers = array_merge ( $extra_headers , $default_headers );
} else {
$all_headers = $default_headers ;
}
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foreach ( $all_headers as $field => $regex ) {
preg_match ( '/' . preg_quote ( $regex , '/' ) . ':(.*)$/mi' , $file_data , ${$field} );
if ( ! empty ( ${$field} ) )
${$field} = _cleanup_header_comment ( ${$field} [ 1 ] );
else
${$field} = '' ;
}
$file_data = compact ( array_keys ( $all_headers ) );
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return $file_data ;
}
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/*
* Used internally to tidy up the search terms
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*
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* @ private
* @ since 2.9 . 0
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*
* @ param string $t
* @ return string
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*/
function _search_terms_tidy ( $t ) {
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return trim ( $t , " \" ' \n \r " );
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}
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/**
* Returns false
*
* Useful for returning false to filters easily
*
* @ return bool false
*/
function __return_false () {
return false ;
}
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?>