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< ? php
/**
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* Post API : Top - level post functionality
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*
* @ package WordPress
* @ subpackage Post
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* @ since 4.4 . 0
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*/
//
// Post Type Registration
//
/**
* Creates the initial post types when 'init' action is fired .
*
* @ since 2.9 . 0
*/
function create_initial_post_types () {
register_post_type ( 'post' , array (
'labels' => array (
'name_admin_bar' => _x ( 'Post' , 'add new on admin bar' ),
),
'public' => true ,
'_builtin' => true , /* internal use only. don't use this when registering your own post type. */
'_edit_link' => 'post.php?post=%d' , /* internal use only. don't use this when registering your own post type. */
'capability_type' => 'post' ,
'map_meta_cap' => true ,
'menu_position' => 5 ,
'hierarchical' => false ,
'rewrite' => false ,
'query_var' => false ,
'delete_with_user' => true ,
'supports' => array ( 'title' , 'editor' , 'author' , 'thumbnail' , 'excerpt' , 'trackbacks' , 'custom-fields' , 'comments' , 'revisions' , 'post-formats' ),
) );
register_post_type ( 'page' , array (
'labels' => array (
'name_admin_bar' => _x ( 'Page' , 'add new on admin bar' ),
),
'public' => true ,
'publicly_queryable' => false ,
'_builtin' => true , /* internal use only. don't use this when registering your own post type. */
'_edit_link' => 'post.php?post=%d' , /* internal use only. don't use this when registering your own post type. */
'capability_type' => 'page' ,
'map_meta_cap' => true ,
'menu_position' => 20 ,
'hierarchical' => true ,
'rewrite' => false ,
'query_var' => false ,
'delete_with_user' => true ,
'supports' => array ( 'title' , 'editor' , 'author' , 'thumbnail' , 'page-attributes' , 'custom-fields' , 'comments' , 'revisions' ),
) );
register_post_type ( 'attachment' , array (
'labels' => array (
'name' => _x ( 'Media' , 'post type general name' ),
'name_admin_bar' => _x ( 'Media' , 'add new from admin bar' ),
'add_new' => _x ( 'Add New' , 'add new media' ),
'edit_item' => __ ( 'Edit Media' ),
'view_item' => __ ( 'View Attachment Page' ),
),
'public' => true ,
'show_ui' => true ,
'_builtin' => true , /* internal use only. don't use this when registering your own post type. */
'_edit_link' => 'post.php?post=%d' , /* internal use only. don't use this when registering your own post type. */
'capability_type' => 'post' ,
'capabilities' => array (
'create_posts' => 'upload_files' ,
),
'map_meta_cap' => true ,
'hierarchical' => false ,
'rewrite' => false ,
'query_var' => false ,
'show_in_nav_menus' => false ,
'delete_with_user' => true ,
'supports' => array ( 'title' , 'author' , 'comments' ),
) );
add_post_type_support ( 'attachment:audio' , 'thumbnail' );
add_post_type_support ( 'attachment:video' , 'thumbnail' );
register_post_type ( 'revision' , array (
'labels' => array (
'name' => __ ( 'Revisions' ),
'singular_name' => __ ( 'Revision' ),
),
'public' => false ,
'_builtin' => true , /* internal use only. don't use this when registering your own post type. */
'_edit_link' => 'revision.php?revision=%d' , /* internal use only. don't use this when registering your own post type. */
'capability_type' => 'post' ,
'map_meta_cap' => true ,
'hierarchical' => false ,
'rewrite' => false ,
'query_var' => false ,
'can_export' => false ,
'delete_with_user' => true ,
'supports' => array ( 'author' ),
) );
register_post_type ( 'nav_menu_item' , array (
'labels' => array (
'name' => __ ( 'Navigation Menu Items' ),
'singular_name' => __ ( 'Navigation Menu Item' ),
),
'public' => false ,
'_builtin' => true , /* internal use only. don't use this when registering your own post type. */
'hierarchical' => false ,
'rewrite' => false ,
'delete_with_user' => false ,
'query_var' => false ,
) );
register_post_status ( 'publish' , array (
'label' => _x ( 'Published' , 'post' ),
'public' => true ,
'_builtin' => true , /* internal use only. */
'label_count' => _n_noop ( 'Published <span class="count">(%s)</span>' , 'Published <span class="count">(%s)</span>' ),
) );
register_post_status ( 'future' , array (
'label' => _x ( 'Scheduled' , 'post' ),
'protected' => true ,
'_builtin' => true , /* internal use only. */
'label_count' => _n_noop ( 'Scheduled <span class="count">(%s)</span>' , 'Scheduled <span class="count">(%s)</span>' ),
) );
register_post_status ( 'draft' , array (
'label' => _x ( 'Draft' , 'post' ),
'protected' => true ,
'_builtin' => true , /* internal use only. */
'label_count' => _n_noop ( 'Draft <span class="count">(%s)</span>' , 'Drafts <span class="count">(%s)</span>' ),
) );
register_post_status ( 'pending' , array (
'label' => _x ( 'Pending' , 'post' ),
'protected' => true ,
'_builtin' => true , /* internal use only. */
'label_count' => _n_noop ( 'Pending <span class="count">(%s)</span>' , 'Pending <span class="count">(%s)</span>' ),
) );
register_post_status ( 'private' , array (
'label' => _x ( 'Private' , 'post' ),
'private' => true ,
'_builtin' => true , /* internal use only. */
'label_count' => _n_noop ( 'Private <span class="count">(%s)</span>' , 'Private <span class="count">(%s)</span>' ),
) );
register_post_status ( 'trash' , array (
'label' => _x ( 'Trash' , 'post' ),
'internal' => true ,
'_builtin' => true , /* internal use only. */
'label_count' => _n_noop ( 'Trash <span class="count">(%s)</span>' , 'Trash <span class="count">(%s)</span>' ),
'show_in_admin_status_list' => true ,
) );
register_post_status ( 'auto-draft' , array (
'label' => 'auto-draft' ,
'internal' => true ,
'_builtin' => true , /* internal use only. */
) );
register_post_status ( 'inherit' , array (
'label' => 'inherit' ,
'internal' => true ,
'_builtin' => true , /* internal use only. */
'exclude_from_search' => false ,
) );
}
/**
* Retrieve attached file path based on attachment ID .
*
* By default the path will go through the 'get_attached_file' filter , but
* passing a true to the $unfiltered argument of get_attached_file () will
* return the file path unfiltered .
*
* The function works by getting the single post meta name , named
* '_wp_attached_file' and returning it . This is a convenience function to
* prevent looking up the meta name and provide a mechanism for sending the
* attached filename through a filter .
*
* @ since 2.0 . 0
*
* @ param int $attachment_id Attachment ID .
* @ param bool $unfiltered Optional . Whether to apply filters . Default false .
* @ return string | false The file path to where the attached file should be , false otherwise .
*/
function get_attached_file ( $attachment_id , $unfiltered = false ) {
$file = get_post_meta ( $attachment_id , '_wp_attached_file' , true );
// If the file is relative, prepend upload dir.
if ( $file && 0 !== strpos ( $file , '/' ) && ! preg_match ( '|^.:\\\|' , $file ) && ( ( $uploads = wp_upload_dir ()) && false === $uploads [ 'error' ] ) )
$file = $uploads [ 'basedir' ] . " / $file " ;
if ( $unfiltered )
return $file ;
/**
* Filter the attached file based on the given ID .
*
* @ since 2.1 . 0
*
* @ param string $file Path to attached file .
* @ param int $attachment_id Attachment ID .
*/
return apply_filters ( 'get_attached_file' , $file , $attachment_id );
}
/**
* Update attachment file path based on attachment ID .
*
* Used to update the file path of the attachment , which uses post meta name
* '_wp_attached_file' to store the path of the attachment .
*
* @ since 2.1 . 0
*
* @ param int $attachment_id Attachment ID .
* @ param string $file File path for the attachment .
* @ return bool True on success , false on failure .
*/
function update_attached_file ( $attachment_id , $file ) {
if ( ! get_post ( $attachment_id ) )
return false ;
/**
* Filter the path to the attached file to update .
*
* @ since 2.1 . 0
*
* @ param string $file Path to the attached file to update .
* @ param int $attachment_id Attachment ID .
*/
$file = apply_filters ( 'update_attached_file' , $file , $attachment_id );
if ( $file = _wp_relative_upload_path ( $file ) )
return update_post_meta ( $attachment_id , '_wp_attached_file' , $file );
else
return delete_post_meta ( $attachment_id , '_wp_attached_file' );
}
/**
* Return relative path to an uploaded file .
*
* The path is relative to the current upload dir .
*
* @ since 2.9 . 0
*
* @ param string $path Full path to the file .
* @ return string Relative path on success , unchanged path on failure .
*/
function _wp_relative_upload_path ( $path ) {
$new_path = $path ;
$uploads = wp_upload_dir ();
if ( 0 === strpos ( $new_path , $uploads [ 'basedir' ] ) ) {
$new_path = str_replace ( $uploads [ 'basedir' ], '' , $new_path );
$new_path = ltrim ( $new_path , '/' );
}
/**
* Filter the relative path to an uploaded file .
*
* @ since 2.9 . 0
*
* @ param string $new_path Relative path to the file .
* @ param string $path Full path to the file .
*/
return apply_filters ( '_wp_relative_upload_path' , $new_path , $path );
}
/**
* Retrieve all children of the post parent ID .
*
* Normally , without any enhancements , the children would apply to pages . In the
* context of the inner workings of WordPress , pages , posts , and attachments
* share the same table , so therefore the functionality could apply to any one
* of them . It is then noted that while this function does not work on posts , it
* does not mean that it won ' t work on posts . It is recommended that you know
* what context you wish to retrieve the children of .
*
* Attachments may also be made the child of a post , so if that is an accurate
* statement ( which needs to be verified ), it would then be possible to get
* all of the attachments for a post . Attachments have since changed since
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* version 2.5 , so this is most likely inaccurate , but serves generally as an
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* example of what is possible .
*
* The arguments listed as defaults are for this function and also of the
* { @ link get_posts ()} function . The arguments are combined with the
* get_children defaults and are then passed to the { @ link get_posts ()}
* function , which accepts additional arguments . You can replace the defaults in
* this function , listed below and the additional arguments listed in the
* { @ link get_posts ()} function .
*
* The 'post_parent' is the most important argument and important attention
* needs to be paid to the $args parameter . If you pass either an object or an
* integer ( number ), then just the 'post_parent' is grabbed and everything else
* is lost . If you don ' t specify any arguments , then it is assumed that you are
* in The Loop and the post parent will be grabbed for from the current post .
*
* The 'post_parent' argument is the ID to get the children . The 'numberposts'
* is the amount of posts to retrieve that has a default of '-1' , which is
* used to get all of the posts . Giving a number higher than 0 will only
* retrieve that amount of posts .
*
* The 'post_type' and 'post_status' arguments can be used to choose what
* criteria of posts to retrieve . The 'post_type' can be anything , but WordPress
* post types are 'post' , 'pages' , and 'attachments' . The 'post_status'
* argument will accept any post status within the write administration panels .
*
* @ since 2.0 . 0
*
* @ see get_posts ()
* @ todo Check validity of description .
*
* @ global WP_Post $post
*
* @ param mixed $args Optional . User defined arguments for replacing the defaults . Default empty .
* @ param string $output Optional . Constant for return type . Accepts OBJECT , ARRAY_A , ARRAY_N .
* Default OBJECT .
* @ return array Array of children , where the type of each element is determined by $output parameter .
* Empty array on failure .
*/
function get_children ( $args = '' , $output = OBJECT ) {
$kids = array ();
if ( empty ( $args ) ) {
if ( isset ( $GLOBALS [ 'post' ] ) ) {
$args = array ( 'post_parent' => ( int ) $GLOBALS [ 'post' ] -> post_parent );
} else {
return $kids ;
}
} elseif ( is_object ( $args ) ) {
$args = array ( 'post_parent' => ( int ) $args -> post_parent );
} elseif ( is_numeric ( $args ) ) {
$args = array ( 'post_parent' => ( int ) $args );
}
$defaults = array (
'numberposts' => - 1 , 'post_type' => 'any' ,
'post_status' => 'any' , 'post_parent' => 0 ,
);
$r = wp_parse_args ( $args , $defaults );
$children = get_posts ( $r );
if ( ! $children )
return $kids ;
if ( ! empty ( $r [ 'fields' ] ) )
return $children ;
update_post_cache ( $children );
foreach ( $children as $key => $child )
$kids [ $child -> ID ] = $children [ $key ];
if ( $output == OBJECT ) {
return $kids ;
} elseif ( $output == ARRAY_A ) {
$weeuns = array ();
foreach ( ( array ) $kids as $kid ) {
$weeuns [ $kid -> ID ] = get_object_vars ( $kids [ $kid -> ID ]);
}
return $weeuns ;
} elseif ( $output == ARRAY_N ) {
$babes = array ();
foreach ( ( array ) $kids as $kid ) {
$babes [ $kid -> ID ] = array_values ( get_object_vars ( $kids [ $kid -> ID ]));
}
return $babes ;
} else {
return $kids ;
}
}
/**
* Get extended entry info ( <!-- more --> ) .
*
* There should not be any space after the second dash and before the word
* 'more' . There can be text or space ( s ) after the word 'more' , but won ' t be
* referenced .
*
* The returned array has 'main' , 'extended' , and 'more_text' keys . Main has the text before
* the `<!--more-->` . The 'extended' key has the content after the
* `<!--more-->` comment . The 'more_text' key has the custom " Read More " text .
*
* @ since 1.0 . 0
*
* @ param string $post Post content .
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* @ return array Post before ( 'main' ), after ( 'extended' ), and custom read more ( 'more_text' ) .
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*/
function get_extended ( $post ) {
//Match the new style more links.
if ( preg_match ( '/<!--more(.*?)?-->/' , $post , $matches ) ) {
list ( $main , $extended ) = explode ( $matches [ 0 ], $post , 2 );
$more_text = $matches [ 1 ];
} else {
$main = $post ;
$extended = '' ;
$more_text = '' ;
}
// leading and trailing whitespace.
$main = preg_replace ( '/^[\s]*(.*)[\s]*$/' , '\\1' , $main );
$extended = preg_replace ( '/^[\s]*(.*)[\s]*$/' , '\\1' , $extended );
$more_text = preg_replace ( '/^[\s]*(.*)[\s]*$/' , '\\1' , $more_text );
return array ( 'main' => $main , 'extended' => $extended , 'more_text' => $more_text );
}
/**
* Retrieves post data given a post ID or post object .
*
* See { @ link sanitize_post ()} for optional $filter values . Also , the parameter
* $post , must be given as a variable , since it is passed by reference .
*
* @ since 1.5 . 1
*
* @ global WP_Post $post
*
* @ param int | WP_Post | null $post Optional . Post ID or post object . Defaults to global $post .
* @ param string $output Optional , default is Object . Accepts OBJECT , ARRAY_A , or ARRAY_N .
* Default OBJECT .
* @ param string $filter Optional . Type of filter to apply . Accepts 'raw' , 'edit' , 'db' ,
* or 'display' . Default 'raw' .
* @ return WP_Post | array | null Type corresponding to $output on success or null on failure .
* When $output is OBJECT , a `WP_Post` instance is returned .
*/
function get_post ( $post = null , $output = OBJECT , $filter = 'raw' ) {
if ( empty ( $post ) && isset ( $GLOBALS [ 'post' ] ) )
$post = $GLOBALS [ 'post' ];
if ( $post instanceof WP_Post ) {
$_post = $post ;
} elseif ( is_object ( $post ) ) {
if ( empty ( $post -> filter ) ) {
$_post = sanitize_post ( $post , 'raw' );
$_post = new WP_Post ( $_post );
} elseif ( 'raw' == $post -> filter ) {
$_post = new WP_Post ( $post );
} else {
$_post = WP_Post :: get_instance ( $post -> ID );
}
} else {
$_post = WP_Post :: get_instance ( $post );
}
if ( ! $_post )
return null ;
$_post = $_post -> filter ( $filter );
if ( $output == ARRAY_A )
return $_post -> to_array ();
elseif ( $output == ARRAY_N )
return array_values ( $_post -> to_array () );
return $_post ;
}
/**
* Retrieve ancestors of a post .
*
* @ since 2.5 . 0
*
* @ param int | WP_Post $post Post ID or post object .
* @ return array Ancestor IDs or empty array if none are found .
*/
function get_post_ancestors ( $post ) {
$post = get_post ( $post );
if ( ! $post || empty ( $post -> post_parent ) || $post -> post_parent == $post -> ID )
return array ();
$ancestors = array ();
$id = $ancestors [] = $post -> post_parent ;
while ( $ancestor = get_post ( $id ) ) {
// Loop detection: If the ancestor has been seen before, break.
if ( empty ( $ancestor -> post_parent ) || ( $ancestor -> post_parent == $post -> ID ) || in_array ( $ancestor -> post_parent , $ancestors ) )
break ;
$id = $ancestors [] = $ancestor -> post_parent ;
}
return $ancestors ;
}
/**
* Retrieve data from a post field based on Post ID .
*
* Examples of the post field will be , 'post_type' , 'post_status' , 'post_content' ,
* etc and based off of the post object property or key names .
*
* The context values are based off of the taxonomy filter functions and
* supported values are found within those functions .
*
* @ since 2.3 . 0
*
* @ see sanitize_post_field ()
*
* @ param string $field Post field name .
* @ param int | WP_Post $post Post ID or post object .
* @ param string $context Optional . How to filter the field . Accepts 'raw' , 'edit' , 'db' ,
* or 'display' . Default 'display' .
* @ return string The value of the post field on success , empty string on failure .
*/
function get_post_field ( $field , $post , $context = 'display' ) {
$post = get_post ( $post );
if ( ! $post )
return '' ;
if ( ! isset ( $post -> $field ) )
return '' ;
return sanitize_post_field ( $field , $post -> $field , $post -> ID , $context );
}
/**
* Retrieve the mime type of an attachment based on the ID .
*
* This function can be used with any post type , but it makes more sense with
* attachments .
*
* @ since 2.0 . 0
*
* @ param int | WP_Post $ID Optional . Post ID or post object . Default empty .
* @ return string | false The mime type on success , false on failure .
*/
function get_post_mime_type ( $ID = '' ) {
$post = get_post ( $ID );
if ( is_object ( $post ) )
return $post -> post_mime_type ;
return false ;
}
/**
* Retrieve the post status based on the Post ID .
*
* If the post ID is of an attachment , then the parent post status will be given
* instead .
*
* @ since 2.0 . 0
*
* @ param int | WP_Post $ID Optional . Post ID or post object . Default empty .
* @ return string | false Post status on success , false on failure .
*/
function get_post_status ( $ID = '' ) {
$post = get_post ( $ID );
if ( ! is_object ( $post ) )
return false ;
if ( 'attachment' == $post -> post_type ) {
if ( 'private' == $post -> post_status )
return 'private' ;
// Unattached attachments are assumed to be published.
if ( ( 'inherit' == $post -> post_status ) && ( 0 == $post -> post_parent ) )
return 'publish' ;
// Inherit status from the parent.
if ( $post -> post_parent && ( $post -> ID != $post -> post_parent ) ) {
$parent_post_status = get_post_status ( $post -> post_parent );
if ( 'trash' == $parent_post_status ) {
return get_post_meta ( $post -> post_parent , '_wp_trash_meta_status' , true );
} else {
return $parent_post_status ;
}
}
}
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/**
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* Filter the post status .
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*
* @ since 4.4 . 0
*
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* @ param string $post_status The post status .
* @ param WP_Post $post The post object .
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*/
return apply_filters ( 'get_post_status' , $post -> post_status , $post );
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}
/**
* Retrieve all of the WordPress supported post statuses .
*
* Posts have a limited set of valid status values , this provides the
* post_status values and descriptions .
*
* @ since 2.5 . 0
*
* @ return array List of post statuses .
*/
function get_post_statuses () {
$status = array (
'draft' => __ ( 'Draft' ),
'pending' => __ ( 'Pending Review' ),
'private' => __ ( 'Private' ),
'publish' => __ ( 'Published' )
);
return $status ;
}
/**
* Retrieve all of the WordPress support page statuses .
*
* Pages have a limited set of valid status values , this provides the
* post_status values and descriptions .
*
* @ since 2.5 . 0
*
* @ return array List of page statuses .
*/
function get_page_statuses () {
$status = array (
'draft' => __ ( 'Draft' ),
'private' => __ ( 'Private' ),
'publish' => __ ( 'Published' )
);
return $status ;
}
/**
* Register a post status . Do not use before init .
*
* A simple function for creating or modifying a post status based on the
* parameters given . The function will accept an array ( second optional
* parameter ), along with a string for the post status name .
*
* Arguments prefixed with an _underscore shouldn ' t be used by plugins and themes .
*
* @ since 3.0 . 0
* @ global array $wp_post_statuses Inserts new post status object into the list
*
* @ param string $post_status Name of the post status .
* @ param array | string $args {
* Optional . Array or string of post status arguments .
*
* @ type bool | string $label A descriptive name for the post status marked
* for translation . Defaults to value of $post_status .
* @ type bool | array $label_count Descriptive text to use for nooped plurals .
* Default array of $label , twice
* @ type bool $exclude_from_search Whether to exclude posts with this post status
* from search results . Default is value of $internal .
* @ type bool $_builtin Whether the status is built - in . Core - use only .
* Default false .
* @ type bool $public Whether posts of this status should be shown
* in the front end of the site . Default false .
* @ type bool $internal Whether the status is for internal use only .
* Default false .
* @ type bool $protected Whether posts with this status should be protected .
* Default false .
* @ type bool $private Whether posts with this status should be private .
* Default false .
* @ type bool $publicly_queryable Whether posts with this status should be publicly -
* queryable . Default is value of $public .
* @ type bool $show_in_admin_all_list Whether to include posts in the edit listing for
* their post type . Default is value of $internal .
* @ type bool $show_in_admin_status_list Show in the list of statuses with post counts at
* the top of the edit listings ,
* e . g . All ( 12 ) | Published ( 9 ) | My Custom Status ( 2 )
* Default is value of $internal .
* }
* @ return object
*/
function register_post_status ( $post_status , $args = array () ) {
global $wp_post_statuses ;
if ( ! is_array ( $wp_post_statuses ))
$wp_post_statuses = array ();
// Args prefixed with an underscore are reserved for internal use.
$defaults = array (
'label' => false ,
'label_count' => false ,
'exclude_from_search' => null ,
'_builtin' => false ,
'public' => null ,
'internal' => null ,
'protected' => null ,
'private' => null ,
'publicly_queryable' => null ,
'show_in_admin_status_list' => null ,
'show_in_admin_all_list' => null ,
);
$args = wp_parse_args ( $args , $defaults );
$args = ( object ) $args ;
$post_status = sanitize_key ( $post_status );
$args -> name = $post_status ;
// Set various defaults.
if ( null === $args -> public && null === $args -> internal && null === $args -> protected && null === $args -> private )
$args -> internal = true ;
if ( null === $args -> public )
$args -> public = false ;
if ( null === $args -> private )
$args -> private = false ;
if ( null === $args -> protected )
$args -> protected = false ;
if ( null === $args -> internal )
$args -> internal = false ;
if ( null === $args -> publicly_queryable )
$args -> publicly_queryable = $args -> public ;
if ( null === $args -> exclude_from_search )
$args -> exclude_from_search = $args -> internal ;
if ( null === $args -> show_in_admin_all_list )
$args -> show_in_admin_all_list = ! $args -> internal ;
if ( null === $args -> show_in_admin_status_list )
$args -> show_in_admin_status_list = ! $args -> internal ;
if ( false === $args -> label )
$args -> label = $post_status ;
if ( false === $args -> label_count )
$args -> label_count = array ( $args -> label , $args -> label );
$wp_post_statuses [ $post_status ] = $args ;
return $args ;
}
/**
* Retrieve a post status object by name .
*
* @ since 3.0 . 0
*
* @ global array $wp_post_statuses List of post statuses .
*
* @ see register_post_status ()
*
* @ param string $post_status The name of a registered post status .
* @ return object | null A post status object .
*/
function get_post_status_object ( $post_status ) {
global $wp_post_statuses ;
if ( empty ( $wp_post_statuses [ $post_status ]) )
return null ;
return $wp_post_statuses [ $post_status ];
}
/**
* Get a list of post statuses .
*
* @ since 3.0 . 0
*
* @ global array $wp_post_statuses List of post statuses .
*
* @ see register_post_status ()
*
* @ param array | string $args Optional . Array or string of post status arguments to compare against
* properties of the global `$wp_post_statuses objects` . Default empty array .
* @ param string $output Optional . The type of output to return , either 'names' or 'objects' . Default 'names' .
* @ param string $operator Optional . The logical operation to perform . 'or' means only one element
* from the array needs to match ; 'and' means all elements must match .
* Default 'and' .
* @ return array A list of post status names or objects .
*/
function get_post_stati ( $args = array (), $output = 'names' , $operator = 'and' ) {
global $wp_post_statuses ;
$field = ( 'names' == $output ) ? 'name' : false ;
return wp_filter_object_list ( $wp_post_statuses , $args , $operator , $field );
}
/**
* Whether the post type is hierarchical .
*
* A false return value might also mean that the post type does not exist .
*
* @ since 3.0 . 0
*
* @ see get_post_type_object ()
*
* @ param string $post_type Post type name
* @ return bool Whether post type is hierarchical .
*/
function is_post_type_hierarchical ( $post_type ) {
if ( ! post_type_exists ( $post_type ) )
return false ;
$post_type = get_post_type_object ( $post_type );
return $post_type -> hierarchical ;
}
/**
* Check if a post type is registered .
*
* @ since 3.0 . 0
*
* @ see get_post_type_object ()
*
* @ param string $post_type Post type name .
* @ return bool Whether post type is registered .
*/
function post_type_exists ( $post_type ) {
return ( bool ) get_post_type_object ( $post_type );
}
/**
* Retrieve the post type of the current post or of a given post .
*
* @ since 2.1 . 0
*
* @ param int | WP_Post | null $post Optional . Post ID or post object . Default is global $post .
* @ return string | false Post type on success , false on failure .
*/
function get_post_type ( $post = null ) {
if ( $post = get_post ( $post ) )
return $post -> post_type ;
return false ;
}
/**
* Retrieve a post type object by name .
*
* @ since 3.0 . 0
*
* @ global array $wp_post_types List of post types .
*
* @ see register_post_type ()
*
* @ param string $post_type The name of a registered post type .
* @ return object | null A post type object .
*/
function get_post_type_object ( $post_type ) {
global $wp_post_types ;
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if ( ! is_scalar ( $post_type ) || empty ( $wp_post_types [ $post_type ] ) ) {
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return null ;
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}
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return $wp_post_types [ $post_type ];
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}
/**
* Get a list of all registered post type objects .
*
* @ since 2.9 . 0
*
* @ global array $wp_post_types List of post types .
*
* @ see register_post_type () for accepted arguments .
*
* @ param array | string $args Optional . An array of key => value arguments to match against
* the post type objects . Default empty array .
* @ param string $output Optional . The type of output to return . Accepts post type 'names'
* or 'objects' . Default 'names' .
* @ param string $operator Optional . The logical operation to perform . 'or' means only one
* element from the array needs to match ; 'and' means all elements
* must match . Accepts 'or' or 'and' . Default 'and' .
* @ return array A list of post type names or objects .
*/
function get_post_types ( $args = array (), $output = 'names' , $operator = 'and' ) {
global $wp_post_types ;
$field = ( 'names' == $output ) ? 'name' : false ;
return wp_filter_object_list ( $wp_post_types , $args , $operator , $field );
}
/**
* Register a post type . Do not use before init .
*
* A function for creating or modifying a post type based on the
* parameters given . The function will accept an array ( second optional
* parameter ), along with a string for the post type name .
*
* @ since 2.9 . 0
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* @ since 3.0 . 0 The `show_ui` argument is now enforced on the new post screen .
* @ since 4.4 . 0 The `show_ui` argument is now enforced on the post type listing screen and post editing screen .
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*
* @ global array $wp_post_types List of post types .
* @ global WP_Rewrite $wp_rewrite Used for default feeds .
* @ global WP $wp Used to add query vars .
*
* @ param string $post_type Post type key , must not exceed 20 characters .
* @ param array | string $args {
* Array or string of arguments for registering a post type .
*
* @ type string $label Name of the post type shown in the menu . Usually plural .
* Default is value of $labels [ 'name' ] .
* @ type array $labels An array of labels for this post type . If not set , post
* labels are inherited for non - hierarchical types and page
* labels for hierarchical ones . { @ see get_post_type_labels ()} .
* @ type string $description A short descriptive summary of what the post type is .
* Default empty .
* @ type bool $public Whether a post type is intended for use publicly either via
* the admin interface or by front - end users . While the default
* settings of $exclude_from_search , $publicly_queryable , $show_ui ,
* and $show_in_nav_menus are inherited from public , each does not
* rely on this relationship and controls a very specific intention .
* Default false .
* @ type bool $hierarchical Whether the post type is hierarchical ( e . g . page ) . Default false .
* @ type bool $exclude_from_search Whether to exclude posts with this post type from front end search
* results . Default is the opposite value of $public .
* @ type bool $publicly_queryable Whether queries can be performed on the front end for the post type
* as part of { @ see parse_request ()} . Endpoints would include :
* * ? post_type = { post_type_key }
* * ? { post_type_key } = { single_post_slug }
* * ? { post_type_query_var } = { single_post_slug }
* If not set , the default is inherited from $public .
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* @ type bool $show_ui Whether to generate and allow a UI for managing this post type in the
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* admin . Default is value of $public .
* @ type bool $show_in_menu Where to show the post type in the admin menu . To work , $show_ui
* must be true . If true , the post type is shown in its own top level
* menu . If false , no menu is shown . If a string of an existing top
* level menu ( eg . 'tools.php' or 'edit.php?post_type=page' ), the post
* type will be placed as a sub - menu of that .
* Default is value of $show_ui .
* @ type bool $show_in_nav_menus Makes this post type available for selection in navigation menus .
* Default is value $public .
* @ type bool $show_in_admin_bar Makes this post type available via the admin bar . Default is value
* of $show_in_menu .
* @ type int $menu_position The position in the menu order the post type should appear . To work ,
* $show_in_menu must be true . Default null ( at the bottom ) .
* @ type string $menu_icon The url to the icon to be used for this menu . Pass a base64 - encoded
* SVG using a data URI , which will be colored to match the color scheme
* -- this should begin with 'data:image/svg+xml;base64,' . Pass the name
* of a Dashicons helper class to use a font icon , e . g .
* 'dashicons-chart-pie' . Pass 'none' to leave div . wp - menu - image empty
* so an icon can be added via CSS . Defaults to use the posts icon .
* @ type string $capability_type The string to use to build the read , edit , and delete capabilities .
* May be passed as an array to allow for alternative plurals when using
* this argument as a base to construct the capabilities , e . g .
* array ( 'story' , 'stories' ) . Default 'post' .
* @ type array $capabilities Array of capabilities for this post type . $capability_type is used
* as a base to construct capabilities by default .
* { @ see get_post_type_capabilities ()} .
* @ type bool $map_meta_cap Whether to use the internal default meta capability handling .
* Default false .
* @ type array $supports An alias for calling { @ see add_post_type_support ()} directly .
* Defaults to array containing 'title' & 'editor' .
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* @ type callable $register_meta_box_cb Provide a callback function that sets up the meta boxes for the
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* edit form . Do remove_meta_box () and add_meta_box () calls in the
* callback . Default null .
* @ type array $taxonomies An array of taxonomy identifiers that will be registered for the
* post type . Taxonomies can be registered later with
* { @ see register_taxonomy ()} or { @ see register_taxonomy_for_object_type ()} .
* Default empty array .
* @ type bool | string $has_archive Whether there should be post type archives , or if a string , the
* archive slug to use . Will generate the proper rewrite rules if
* $rewrite is enabled . Default false .
* @ type bool | array $rewrite {
* Triggers the handling of rewrites for this post type . To prevent rewrite , set to false .
* Defaults to true , using $post_type as slug . To specify rewrite rules , an array can be
* passed with any of these keys :
*
* @ type string $slug Customize the permastruct slug . Defaults to $post_type key .
* @ type bool $with_front Whether the permastruct should be prepended with WP_Rewrite :: $front .
* Default true .
* @ type bool $feeds Whether the feed permastruct should be built for this post type .
* Default is value of $has_archive .
* @ type bool $pages Whether the permastruct should provide for pagination . Default true .
* @ type const $ep_mask Endpoint mask to assign . If not specified and permalink_epmask is set ,
* inherits from $permalink_epmask . If not specified and permalink_epmask
* is not set , defaults to EP_PERMALINK .
* }
* @ type string | bool $query_var Sets the query_var key for this post type . Defaults to $post_type
* key . If false , a post type cannot be loaded at
* ? { query_var } = { post_slug } . If specified as a string , the query
* ? { query_var_string } = { post_slug } will be valid .
* @ type bool $can_export Whether to allow this post type to be exported . Default true .
* @ type bool $delete_with_user Whether to delete posts of this type when deleting a user . If true ,
* posts of this type belonging to the user will be moved to trash
* when then user is deleted . If false , posts of this type belonging
* to the user will * not * be trashed or deleted . If not set ( the default ),
* posts are trashed if post_type_supports ( 'author' ) . Otherwise posts
* are not trashed or deleted . Default null .
* @ type bool $_builtin FOR INTERNAL USE ONLY ! True if this post type is a native or
* " built-in " post_type . Default false .
* @ type string $_edit_link FOR INTERNAL USE ONLY ! URL segment to use for edit link of
* this post type . Default 'post.php?post=%d' .
* }
* @ return object | WP_Error The registered post type object , or an error object .
*/
function register_post_type ( $post_type , $args = array () ) {
global $wp_post_types , $wp_rewrite , $wp ;
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if ( ! is_array ( $wp_post_types ) ) {
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$wp_post_types = array ();
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}
// Sanitize post type name
$post_type = sanitize_key ( $post_type );
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$args = wp_parse_args ( $args );
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/**
* Filter the arguments for registering a post type .
*
* @ since 4.4 . 0
*
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* @ param array $args Array of arguments for registering a post type .
* @ param string $post_type Post type key .
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*/
$args = apply_filters ( 'register_post_type_args' , $args , $post_type );
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// Args prefixed with an underscore are reserved for internal use.
$defaults = array (
'labels' => array (),
'description' => '' ,
'public' => false ,
'hierarchical' => false ,
'exclude_from_search' => null ,
'publicly_queryable' => null ,
'show_ui' => null ,
'show_in_menu' => null ,
'show_in_nav_menus' => null ,
'show_in_admin_bar' => null ,
'menu_position' => null ,
'menu_icon' => null ,
'capability_type' => 'post' ,
'capabilities' => array (),
'map_meta_cap' => null ,
'supports' => array (),
'register_meta_box_cb' => null ,
'taxonomies' => array (),
'has_archive' => false ,
'rewrite' => true ,
'query_var' => true ,
'can_export' => true ,
'delete_with_user' => null ,
'_builtin' => false ,
'_edit_link' => 'post.php?post=%d' ,
);
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$args = array_merge ( $defaults , $args );
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$args = ( object ) $args ;
$args -> name = $post_type ;
if ( empty ( $post_type ) || strlen ( $post_type ) > 20 ) {
_doing_it_wrong ( __FUNCTION__ , __ ( 'Post type names must be between 1 and 20 characters in length.' ), '4.2' );
return new WP_Error ( 'post_type_length_invalid' , __ ( 'Post type names must be between 1 and 20 characters in length.' ) );
}
// If not set, default to the setting for public.
if ( null === $args -> publicly_queryable )
$args -> publicly_queryable = $args -> public ;
// If not set, default to the setting for public.
if ( null === $args -> show_ui )
$args -> show_ui = $args -> public ;
// If not set, default to the setting for show_ui.
if ( null === $args -> show_in_menu || ! $args -> show_ui )
$args -> show_in_menu = $args -> show_ui ;
// If not set, default to the whether the full UI is shown.
if ( null === $args -> show_in_admin_bar )
$args -> show_in_admin_bar = ( bool ) $args -> show_in_menu ;
// If not set, default to the setting for public.
if ( null === $args -> show_in_nav_menus )
$args -> show_in_nav_menus = $args -> public ;
// If not set, default to true if not public, false if public.
if ( null === $args -> exclude_from_search )
$args -> exclude_from_search = ! $args -> public ;
// Back compat with quirky handling in version 3.0. #14122.
if ( empty ( $args -> capabilities ) && null === $args -> map_meta_cap && in_array ( $args -> capability_type , array ( 'post' , 'page' ) ) )
$args -> map_meta_cap = true ;
// If not set, default to false.
if ( null === $args -> map_meta_cap )
$args -> map_meta_cap = false ;
$args -> cap = get_post_type_capabilities ( $args );
unset ( $args -> capabilities );
if ( is_array ( $args -> capability_type ) )
$args -> capability_type = $args -> capability_type [ 0 ];
if ( ! empty ( $args -> supports ) ) {
add_post_type_support ( $post_type , $args -> supports );
unset ( $args -> supports );
} elseif ( false !== $args -> supports ) {
// Add default features
add_post_type_support ( $post_type , array ( 'title' , 'editor' ) );
}
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if ( false !== $args -> query_var ) {
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if ( true === $args -> query_var )
$args -> query_var = $post_type ;
else
$args -> query_var = sanitize_title_with_dashes ( $args -> query_var );
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if ( $wp && is_post_type_viewable ( $args ) ) {
$wp -> add_query_var ( $args -> query_var );
}
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}
if ( false !== $args -> rewrite && ( is_admin () || '' != get_option ( 'permalink_structure' ) ) ) {
if ( ! is_array ( $args -> rewrite ) )
$args -> rewrite = array ();
if ( empty ( $args -> rewrite [ 'slug' ] ) )
$args -> rewrite [ 'slug' ] = $post_type ;
if ( ! isset ( $args -> rewrite [ 'with_front' ] ) )
$args -> rewrite [ 'with_front' ] = true ;
if ( ! isset ( $args -> rewrite [ 'pages' ] ) )
$args -> rewrite [ 'pages' ] = true ;
if ( ! isset ( $args -> rewrite [ 'feeds' ] ) || ! $args -> has_archive )
$args -> rewrite [ 'feeds' ] = ( bool ) $args -> has_archive ;
if ( ! isset ( $args -> rewrite [ 'ep_mask' ] ) ) {
if ( isset ( $args -> permalink_epmask ) )
$args -> rewrite [ 'ep_mask' ] = $args -> permalink_epmask ;
else
$args -> rewrite [ 'ep_mask' ] = EP_PERMALINK ;
}
if ( $args -> hierarchical )
add_rewrite_tag ( " % $post_type % " , '(.+?)' , $args -> query_var ? " { $args -> query_var } = " : " post_type= $post_type &pagename= " );
else
add_rewrite_tag ( " % $post_type % " , '([^/]+)' , $args -> query_var ? " { $args -> query_var } = " : " post_type= $post_type &name= " );
if ( $args -> has_archive ) {
$archive_slug = $args -> has_archive === true ? $args -> rewrite [ 'slug' ] : $args -> has_archive ;
if ( $args -> rewrite [ 'with_front' ] )
$archive_slug = substr ( $wp_rewrite -> front , 1 ) . $archive_slug ;
else
$archive_slug = $wp_rewrite -> root . $archive_slug ;
add_rewrite_rule ( " { $archive_slug } /? $ " , " index.php?post_type= $post_type " , 'top' );
if ( $args -> rewrite [ 'feeds' ] && $wp_rewrite -> feeds ) {
$feeds = '(' . trim ( implode ( '|' , $wp_rewrite -> feeds ) ) . ')' ;
add_rewrite_rule ( " { $archive_slug } /feed/ $feeds /? $ " , " index.php?post_type= $post_type " . '&feed=$matches[1]' , 'top' );
add_rewrite_rule ( " { $archive_slug } / $feeds /? $ " , " index.php?post_type= $post_type " . '&feed=$matches[1]' , 'top' );
}
if ( $args -> rewrite [ 'pages' ] )
add_rewrite_rule ( " { $archive_slug } / { $wp_rewrite -> pagination_base } /([0-9] { 1,})/? $ " , " index.php?post_type= $post_type " . '&paged=$matches[1]' , 'top' );
}
$permastruct_args = $args -> rewrite ;
$permastruct_args [ 'feed' ] = $permastruct_args [ 'feeds' ];
add_permastruct ( $post_type , " { $args -> rewrite [ 'slug' ] } /% $post_type % " , $permastruct_args );
}
// Register the post type meta box if a custom callback was specified.
if ( $args -> register_meta_box_cb )
add_action ( 'add_meta_boxes_' . $post_type , $args -> register_meta_box_cb , 10 , 1 );
$args -> labels = get_post_type_labels ( $args );
$args -> label = $args -> labels -> name ;
$wp_post_types [ $post_type ] = $args ;
add_action ( 'future_' . $post_type , '_future_post_hook' , 5 , 2 );
foreach ( $args -> taxonomies as $taxonomy ) {
register_taxonomy_for_object_type ( $taxonomy , $post_type );
}
/**
* Fires after a post type is registered .
*
* @ since 3.3 . 0
*
* @ param string $post_type Post type .
* @ param object $args Arguments used to register the post type .
*/
do_action ( 'registered_post_type' , $post_type , $args );
return $args ;
}
/**
* Build an object with all post type capabilities out of a post type object
*
* Post type capabilities use the 'capability_type' argument as a base , if the
* capability is not set in the 'capabilities' argument array or if the
* 'capabilities' argument is not supplied .
*
* The capability_type argument can optionally be registered as an array , with
* the first value being singular and the second plural , e . g . array ( 'story, ' stories ' )
* Otherwise , an 's' will be added to the value for the plural form . After
* registration , capability_type will always be a string of the singular value .
*
* By default , seven keys are accepted as part of the capabilities array :
*
* - edit_post , read_post , and delete_post are meta capabilities , which are then
* generally mapped to corresponding primitive capabilities depending on the
* context , which would be the post being edited / read / deleted and the user or
* role being checked . Thus these capabilities would generally not be granted
* directly to users or roles .
*
* - edit_posts - Controls whether objects of this post type can be edited .
* - edit_others_posts - Controls whether objects of this type owned by other users
* can be edited . If the post type does not support an author , then this will
* behave like edit_posts .
* - publish_posts - Controls publishing objects of this post type .
* - read_private_posts - Controls whether private objects can be read .
*
* These four primitive capabilities are checked in core in various locations .
* There are also seven other primitive capabilities which are not referenced
* directly in core , except in map_meta_cap (), which takes the three aforementioned
* meta capabilities and translates them into one or more primitive capabilities
* that must then be checked against the user or role , depending on the context .
*
* - read - Controls whether objects of this post type can be read .
* - delete_posts - Controls whether objects of this post type can be deleted .
* - delete_private_posts - Controls whether private objects can be deleted .
* - delete_published_posts - Controls whether published objects can be deleted .
* - delete_others_posts - Controls whether objects owned by other users can be
* can be deleted . If the post type does not support an author , then this will
* behave like delete_posts .
* - edit_private_posts - Controls whether private objects can be edited .
* - edit_published_posts - Controls whether published objects can be edited .
*
* These additional capabilities are only used in map_meta_cap () . Thus , they are
* only assigned by default if the post type is registered with the 'map_meta_cap'
* argument set to true ( default is false ) .
*
* @ since 3.0 . 0
*
* @ see register_post_type ()
* @ see map_meta_cap ()
*
* @ param object $args Post type registration arguments .
* @ return object object with all the capabilities as member variables .
*/
function get_post_type_capabilities ( $args ) {
if ( ! is_array ( $args -> capability_type ) )
$args -> capability_type = array ( $args -> capability_type , $args -> capability_type . 's' );
// Singular base for meta capabilities, plural base for primitive capabilities.
list ( $singular_base , $plural_base ) = $args -> capability_type ;
$default_capabilities = array (
// Meta capabilities
'edit_post' => 'edit_' . $singular_base ,
'read_post' => 'read_' . $singular_base ,
'delete_post' => 'delete_' . $singular_base ,
// Primitive capabilities used outside of map_meta_cap():
'edit_posts' => 'edit_' . $plural_base ,
'edit_others_posts' => 'edit_others_' . $plural_base ,
'publish_posts' => 'publish_' . $plural_base ,
'read_private_posts' => 'read_private_' . $plural_base ,
);
// Primitive capabilities used within map_meta_cap():
if ( $args -> map_meta_cap ) {
$default_capabilities_for_mapping = array (
'read' => 'read' ,
'delete_posts' => 'delete_' . $plural_base ,
'delete_private_posts' => 'delete_private_' . $plural_base ,
'delete_published_posts' => 'delete_published_' . $plural_base ,
'delete_others_posts' => 'delete_others_' . $plural_base ,
'edit_private_posts' => 'edit_private_' . $plural_base ,
'edit_published_posts' => 'edit_published_' . $plural_base ,
);
$default_capabilities = array_merge ( $default_capabilities , $default_capabilities_for_mapping );
}
$capabilities = array_merge ( $default_capabilities , $args -> capabilities );
// Post creation capability simply maps to edit_posts by default:
if ( ! isset ( $capabilities [ 'create_posts' ] ) )
$capabilities [ 'create_posts' ] = $capabilities [ 'edit_posts' ];
// Remember meta capabilities for future reference.
if ( $args -> map_meta_cap )
_post_type_meta_capabilities ( $capabilities );
return ( object ) $capabilities ;
}
/**
* Store or return a list of post type meta caps for map_meta_cap () .
*
* @ since 3.1 . 0
* @ access private
*
* @ staticvar array $meta_caps
*
* @ param array | void $capabilities Post type meta capabilities .
*/
function _post_type_meta_capabilities ( $capabilities = null ) {
static $meta_caps = array ();
if ( null === $capabilities )
return $meta_caps ;
foreach ( $capabilities as $core => $custom ) {
if ( in_array ( $core , array ( 'read_post' , 'delete_post' , 'edit_post' ) ) )
$meta_caps [ $custom ] = $core ;
}
}
/**
* Build an object with all post type labels out of a post type object
*
* Accepted keys of the label array in the post type object :
*
* - name - general name for the post type , usually plural . The same and overridden
* by $post_type_object -> label . Default is Posts / Pages
* - singular_name - name for one object of this post type . Default is Post / Page
* - add_new - Default is Add New for both hierarchical and non - hierarchical types .
* When internationalizing this string , please use a gettext context
* { @ link https :// codex . wordpress . org / I18n_for_WordPress_Developers #Disambiguation_by_context}
* matching your post type . Example : `_x( 'Add New', 'product' );` .
* - add_new_item - Default is Add New Post / Add New Page .
* - edit_item - Default is Edit Post / Edit Page .
* - new_item - Default is New Post / New Page .
* - view_item - Default is View Post / View Page .
* - search_items - Default is Search Posts / Search Pages .
* - not_found - Default is No posts found / No pages found .
* - not_found_in_trash - Default is No posts found in Trash / No pages found in Trash .
* - parent_item_colon - This string isn ' t used on non - hierarchical types . In hierarchical
* ones the default is 'Parent Page:' .
* - all_items - String for the submenu . Default is All Posts / All Pages .
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* - archives - String for use with archives in nav menus . Default is Post Archives / Page Archives .
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* - insert_into_item - String for the media frame button . Default is Insert into post / Insert into page .
* - uploaded_to_this_item - String for the media frame filter . Default is Uploaded to this post / Uploaded to this page .
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* - featured_image - Default is Featured Image .
* - set_featured_image - Default is Set featured image .
* - remove_featured_image - Default is Remove featured image .
* - use_featured_image - Default is Use as featured image .
* - menu_name - Default is the same as `name` .
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* - filter_items_list - String for the table views hidden heading .
* - items_list_navigation - String for the table pagination hidden heading .
* - items_list - String for the table hidden heading .
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*
* Above , the first default value is for non - hierarchical post types ( like posts )
* and the second one is for hierarchical post types ( like pages ) .
*
* @ since 3.0 . 0
* @ since 4.3 . 0 Added the `featured_image` , `set_featured_image` , `remove_featured_image` ,
* and `use_featured_image` labels .
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* @ since 4.4 . 0 Added the `insert_into_item` , `uploaded_to_this_item` , `filter_items_list` ,
* `items_list_navigation` , and `items_list` labels .
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*
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* @ access private
*
* @ param object $post_type_object Post type object .
* @ return object object with all the labels as member variables .
*/
function get_post_type_labels ( $post_type_object ) {
$nohier_vs_hier_defaults = array (
'name' => array ( _x ( 'Posts' , 'post type general name' ), _x ( 'Pages' , 'post type general name' ) ),
'singular_name' => array ( _x ( 'Post' , 'post type singular name' ), _x ( 'Page' , 'post type singular name' ) ),
'add_new' => array ( _x ( 'Add New' , 'post' ), _x ( 'Add New' , 'page' ) ),
'add_new_item' => array ( __ ( 'Add New Post' ), __ ( 'Add New Page' ) ),
'edit_item' => array ( __ ( 'Edit Post' ), __ ( 'Edit Page' ) ),
'new_item' => array ( __ ( 'New Post' ), __ ( 'New Page' ) ),
'view_item' => array ( __ ( 'View Post' ), __ ( 'View Page' ) ),
'search_items' => array ( __ ( 'Search Posts' ), __ ( 'Search Pages' ) ),
'not_found' => array ( __ ( 'No posts found.' ), __ ( 'No pages found.' ) ),
'not_found_in_trash' => array ( __ ( 'No posts found in Trash.' ), __ ( 'No pages found in Trash.' ) ),
'parent_item_colon' => array ( null , __ ( 'Parent Page:' ) ),
'all_items' => array ( __ ( 'All Posts' ), __ ( 'All Pages' ) ),
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'archives' => array ( __ ( 'Post Archives' ), __ ( 'Page Archives' ) ),
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'insert_into_item' => array ( __ ( 'Insert into post' ), __ ( 'Insert into page' ) ),
'uploaded_to_this_item' => array ( __ ( 'Uploaded to this post' ), __ ( 'Uploaded to this page' ) ),
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'featured_image' => array ( __ ( 'Featured Image' ), __ ( 'Featured Image' ) ),
'set_featured_image' => array ( __ ( 'Set featured image' ), __ ( 'Set featured image' ) ),
'remove_featured_image' => array ( __ ( 'Remove featured image' ), __ ( 'Remove featured image' ) ),
'use_featured_image' => array ( __ ( 'Use as featured image' ), __ ( 'Use as featured image' ) ),
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'filter_items_list' => array ( __ ( 'Filter posts list' ), __ ( 'Filter pages list' ) ),
'items_list_navigation' => array ( __ ( 'Posts list navigation' ), __ ( 'Pages list navigation' ) ),
'items_list' => array ( __ ( 'Posts list' ), __ ( 'Pages list' ) ),
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);
$nohier_vs_hier_defaults [ 'menu_name' ] = $nohier_vs_hier_defaults [ 'name' ];
$labels = _get_custom_object_labels ( $post_type_object , $nohier_vs_hier_defaults );
$post_type = $post_type_object -> name ;
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$default_labels = clone $labels ;
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/**
* Filter the labels of a specific post type .
*
* The dynamic portion of the hook name , `$post_type` , refers to
* the post type slug .
*
* @ since 3.5 . 0
*
* @ see get_post_type_labels () for the full list of labels .
*
* @ param object $labels Object with labels for the post type as member variables .
*/
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$labels = apply_filters ( " post_type_labels_ { $post_type } " , $labels );
// Ensure that the filtered labels contain all required default values.
$labels = ( object ) array_merge ( ( array ) $default_labels , ( array ) $labels );
return $labels ;
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}
/**
* Build an object with custom - something object ( post type , taxonomy ) labels
* out of a custom - something object
*
* @ since 3.0 . 0
* @ access private
*
* @ param object $object A custom - something object .
* @ param array $nohier_vs_hier_defaults Hierarchical vs non - hierarchical default labels .
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* @ return object Object containing labels for the given custom - something object .
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*/
function _get_custom_object_labels ( $object , $nohier_vs_hier_defaults ) {
$object -> labels = ( array ) $object -> labels ;
if ( isset ( $object -> label ) && empty ( $object -> labels [ 'name' ] ) )
$object -> labels [ 'name' ] = $object -> label ;
if ( ! isset ( $object -> labels [ 'singular_name' ] ) && isset ( $object -> labels [ 'name' ] ) )
$object -> labels [ 'singular_name' ] = $object -> labels [ 'name' ];
if ( ! isset ( $object -> labels [ 'name_admin_bar' ] ) )
$object -> labels [ 'name_admin_bar' ] = isset ( $object -> labels [ 'singular_name' ] ) ? $object -> labels [ 'singular_name' ] : $object -> name ;
if ( ! isset ( $object -> labels [ 'menu_name' ] ) && isset ( $object -> labels [ 'name' ] ) )
$object -> labels [ 'menu_name' ] = $object -> labels [ 'name' ];
if ( ! isset ( $object -> labels [ 'all_items' ] ) && isset ( $object -> labels [ 'menu_name' ] ) )
$object -> labels [ 'all_items' ] = $object -> labels [ 'menu_name' ];
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if ( ! isset ( $object -> labels [ 'archives' ] ) && isset ( $object -> labels [ 'all_items' ] ) ) {
$object -> labels [ 'archives' ] = $object -> labels [ 'all_items' ];
}
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$defaults = array ();
foreach ( $nohier_vs_hier_defaults as $key => $value ) {
$defaults [ $key ] = $object -> hierarchical ? $value [ 1 ] : $value [ 0 ];
}
$labels = array_merge ( $defaults , $object -> labels );
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$object -> labels = ( object ) $object -> labels ;
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return ( object ) $labels ;
}
/**
* Add submenus for post types .
*
* @ access private
* @ since 3.1 . 0
*/
function _add_post_type_submenus () {
foreach ( get_post_types ( array ( 'show_ui' => true ) ) as $ptype ) {
$ptype_obj = get_post_type_object ( $ptype );
// Sub-menus only.
if ( ! $ptype_obj -> show_in_menu || $ptype_obj -> show_in_menu === true )
continue ;
add_submenu_page ( $ptype_obj -> show_in_menu , $ptype_obj -> labels -> name , $ptype_obj -> labels -> all_items , $ptype_obj -> cap -> edit_posts , " edit.php?post_type= $ptype " );
}
}
/**
* Register support of certain features for a post type .
*
* All core features are directly associated with a functional area of the edit
* screen , such as the editor or a meta box . Features include : 'title' , 'editor' ,
* 'comments' , 'revisions' , 'trackbacks' , 'author' , 'excerpt' , 'page-attributes' ,
* 'thumbnail' , 'custom-fields' , and 'post-formats' .
*
* Additionally , the 'revisions' feature dictates whether the post type will
* store revisions , and the 'comments' feature dictates whether the comments
* count will show on the edit screen .
*
* @ since 3.0 . 0
*
* @ global array $_wp_post_type_features
*
* @ param string $post_type The post type for which to add the feature .
* @ param string | array $feature The feature being added , accepts an array of
* feature strings or a single string .
*/
function add_post_type_support ( $post_type , $feature ) {
global $_wp_post_type_features ;
$features = ( array ) $feature ;
foreach ( $features as $feature ) {
if ( func_num_args () == 2 )
$_wp_post_type_features [ $post_type ][ $feature ] = true ;
else
$_wp_post_type_features [ $post_type ][ $feature ] = array_slice ( func_get_args (), 2 );
}
}
/**
* Remove support for a feature from a post type .
*
* @ since 3.0 . 0
*
* @ global array $_wp_post_type_features
*
* @ param string $post_type The post type for which to remove the feature .
* @ param string $feature The feature being removed .
*/
function remove_post_type_support ( $post_type , $feature ) {
global $_wp_post_type_features ;
unset ( $_wp_post_type_features [ $post_type ][ $feature ] );
}
/**
* Get all the post type features
*
* @ since 3.4 . 0
*
* @ global array $_wp_post_type_features
*
* @ param string $post_type The post type .
* @ return array Post type supports list .
*/
function get_all_post_type_supports ( $post_type ) {
global $_wp_post_type_features ;
if ( isset ( $_wp_post_type_features [ $post_type ] ) )
return $_wp_post_type_features [ $post_type ];
return array ();
}
/**
* Check a post type ' s support for a given feature .
*
* @ since 3.0 . 0
*
* @ global array $_wp_post_type_features
*
* @ param string $post_type The post type being checked .
* @ param string $feature The feature being checked .
* @ return bool Whether the post type supports the given feature .
*/
function post_type_supports ( $post_type , $feature ) {
global $_wp_post_type_features ;
return ( isset ( $_wp_post_type_features [ $post_type ][ $feature ] ) );
}
/**
* Update the post type for the post ID .
*
* The page or post cache will be cleaned for the post ID .
*
* @ since 2.5 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param int $post_id Optional . Post ID to change post type . Default 0.
* @ param string $post_type Optional . Post type . Accepts 'post' or 'page' to
* name a few . Default 'post' .
* @ return int | false Amount of rows changed . Should be 1 for success and 0 for failure .
*/
function set_post_type ( $post_id = 0 , $post_type = 'post' ) {
global $wpdb ;
$post_type = sanitize_post_field ( 'post_type' , $post_type , $post_id , 'db' );
$return = $wpdb -> update ( $wpdb -> posts , array ( 'post_type' => $post_type ), array ( 'ID' => $post_id ) );
clean_post_cache ( $post_id );
return $return ;
}
/**
* Determines whether a post type is considered " viewable " .
*
* For built - in post types such as posts and pages , the 'public' value will be evaluated .
* For all others , the 'publicly_queryable' value will be used .
*
* @ since 4.4 . 0
*
* @ param object $post_type_object Post type object .
* @ return bool Whether the post type should be considered viewable .
*/
function is_post_type_viewable ( $post_type_object ) {
return $post_type_object -> publicly_queryable || ( $post_type_object -> _builtin && $post_type_object -> public );
}
/**
* Retrieve list of latest posts or posts matching criteria .
*
* The defaults are as follows :
*
* @ since 1.2 . 0
*
* @ see WP_Query :: parse_query ()
*
* @ param array $args {
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* Optional . Arguments to retrieve posts . See WP_Query :: parse_query () for all
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* available arguments .
*
* @ type int $numberposts Total number of posts to retrieve . Is an alias of $posts_per_page
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* in WP_Query . Accepts - 1 for all . Default 5.
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* @ type int | string $category Category ID or comma - separated list of IDs ( this or any children ) .
* Is an alias of $cat in WP_Query . Default 0.
* @ type array $include An array of post IDs to retrieve , sticky posts will be included .
* Is an alias of $post__in in WP_Query . Default empty array .
* @ type array $exclude An array of post IDs not to retrieve . Default empty array .
* @ type bool $suppress_filters Whether to suppress filters . Default true .
* }
* @ return array List of posts .
*/
function get_posts ( $args = null ) {
$defaults = array (
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'numberposts' => 5 ,
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'category' => 0 , 'orderby' => 'date' ,
'order' => 'DESC' , 'include' => array (),
'exclude' => array (), 'meta_key' => '' ,
'meta_value' => '' , 'post_type' => 'post' ,
'suppress_filters' => true
);
$r = wp_parse_args ( $args , $defaults );
if ( empty ( $r [ 'post_status' ] ) )
$r [ 'post_status' ] = ( 'attachment' == $r [ 'post_type' ] ) ? 'inherit' : 'publish' ;
if ( ! empty ( $r [ 'numberposts' ]) && empty ( $r [ 'posts_per_page' ]) )
$r [ 'posts_per_page' ] = $r [ 'numberposts' ];
if ( ! empty ( $r [ 'category' ]) )
$r [ 'cat' ] = $r [ 'category' ];
if ( ! empty ( $r [ 'include' ]) ) {
$incposts = wp_parse_id_list ( $r [ 'include' ] );
$r [ 'posts_per_page' ] = count ( $incposts ); // only the number of posts included
$r [ 'post__in' ] = $incposts ;
} elseif ( ! empty ( $r [ 'exclude' ]) )
$r [ 'post__not_in' ] = wp_parse_id_list ( $r [ 'exclude' ] );
$r [ 'ignore_sticky_posts' ] = true ;
$r [ 'no_found_rows' ] = true ;
$get_posts = new WP_Query ;
return $get_posts -> query ( $r );
}
//
// Post meta functions
//
/**
* Add meta data field to a post .
*
* Post meta data is called " Custom Fields " on the Administration Screen .
*
* @ since 1.5 . 0
*
* @ param int $post_id Post ID .
* @ param string $meta_key Metadata name .
* @ param mixed $meta_value Metadata value . Must be serializable if non - scalar .
* @ param bool $unique Optional . Whether the same key should not be added .
* Default false .
* @ return int | false Meta ID on success , false on failure .
*/
function add_post_meta ( $post_id , $meta_key , $meta_value , $unique = false ) {
// Make sure meta is added to the post, not a revision.
if ( $the_post = wp_is_post_revision ( $post_id ) )
$post_id = $the_post ;
return add_metadata ( 'post' , $post_id , $meta_key , $meta_value , $unique );
}
/**
* Remove metadata matching criteria from a post .
*
* You can match based on the key , or key and value . Removing based on key and
* value , will keep from removing duplicate metadata with the same key . It also
* allows removing all metadata matching key , if needed .
*
* @ since 1.5 . 0
*
* @ param int $post_id Post ID .
* @ param string $meta_key Metadata name .
* @ param mixed $meta_value Optional . Metadata value . Must be serializable if
* non - scalar . Default empty .
* @ return bool True on success , false on failure .
*/
function delete_post_meta ( $post_id , $meta_key , $meta_value = '' ) {
// Make sure meta is added to the post, not a revision.
if ( $the_post = wp_is_post_revision ( $post_id ) )
$post_id = $the_post ;
return delete_metadata ( 'post' , $post_id , $meta_key , $meta_value );
}
/**
* Retrieve post meta field for a post .
*
* @ since 1.5 . 0
*
* @ param int $post_id Post ID .
* @ param string $key Optional . The meta key to retrieve . By default , returns
* data for all keys . Default empty .
* @ param bool $single Optional . Whether to return a single value . Default false .
* @ return mixed Will be an array if $single is false . Will be value of meta data
* field if $single is true .
*/
function get_post_meta ( $post_id , $key = '' , $single = false ) {
return get_metadata ( 'post' , $post_id , $key , $single );
}
/**
* Update post meta field based on post ID .
*
* Use the $prev_value parameter to differentiate between meta fields with the
* same key and post ID .
*
* If the meta field for the post does not exist , it will be added .
*
* @ since 1.5 . 0
*
* @ param int $post_id Post ID .
* @ param string $meta_key Metadata key .
* @ param mixed $meta_value Metadata value . Must be serializable if non - scalar .
* @ param mixed $prev_value Optional . Previous value to check before removing .
* Default empty .
* @ return int | bool Meta ID if the key didn ' t exist , true on successful update ,
* false on failure .
*/
function update_post_meta ( $post_id , $meta_key , $meta_value , $prev_value = '' ) {
// Make sure meta is added to the post, not a revision.
if ( $the_post = wp_is_post_revision ( $post_id ) )
$post_id = $the_post ;
return update_metadata ( 'post' , $post_id , $meta_key , $meta_value , $prev_value );
}
/**
* Delete everything from post meta matching meta key .
*
* @ since 2.3 . 0
*
* @ param string $post_meta_key Key to search for when deleting .
* @ return bool Whether the post meta key was deleted from the database .
*/
function delete_post_meta_by_key ( $post_meta_key ) {
return delete_metadata ( 'post' , null , $post_meta_key , '' , true );
}
/**
* Retrieve post meta fields , based on post ID .
*
* The post meta fields are retrieved from the cache where possible ,
* so the function is optimized to be called more than once .
*
* @ since 1.2 . 0
*
* @ param int $post_id Optional . Post ID . Default is ID of the global $post .
* @ return array Post meta for the given post .
*/
function get_post_custom ( $post_id = 0 ) {
$post_id = absint ( $post_id );
if ( ! $post_id )
$post_id = get_the_ID ();
return get_post_meta ( $post_id );
}
/**
* Retrieve meta field names for a post .
*
* If there are no meta fields , then nothing ( null ) will be returned .
*
* @ since 1.2 . 0
*
* @ param int $post_id Optional . Post ID . Default is ID of the global $post .
* @ return array | void Array of the keys , if retrieved .
*/
function get_post_custom_keys ( $post_id = 0 ) {
$custom = get_post_custom ( $post_id );
if ( ! is_array ( $custom ) )
return ;
if ( $keys = array_keys ( $custom ) )
return $keys ;
}
/**
* Retrieve values for a custom post field .
*
* The parameters must not be considered optional . All of the post meta fields
* will be retrieved and only the meta field key values returned .
*
* @ since 1.2 . 0
*
* @ param string $key Optional . Meta field key . Default empty .
* @ param int $post_id Optional . Post ID . Default is ID of the global $post .
* @ return array | null Meta field values .
*/
function get_post_custom_values ( $key = '' , $post_id = 0 ) {
if ( ! $key )
return null ;
$custom = get_post_custom ( $post_id );
return isset ( $custom [ $key ]) ? $custom [ $key ] : null ;
}
/**
* Check if post is sticky .
*
* Sticky posts should remain at the top of The Loop . If the post ID is not
* given , then The Loop ID for the current post will be used .
*
* @ since 2.7 . 0
*
* @ param int $post_id Optional . Post ID . Default is ID of the global $post .
* @ return bool Whether post is sticky .
*/
function is_sticky ( $post_id = 0 ) {
$post_id = absint ( $post_id );
if ( ! $post_id )
$post_id = get_the_ID ();
$stickies = get_option ( 'sticky_posts' );
if ( ! is_array ( $stickies ) )
return false ;
if ( in_array ( $post_id , $stickies ) )
return true ;
return false ;
}
/**
* Sanitize every post field .
*
* If the context is 'raw' , then the post object or array will get minimal
* sanitization of the integer fields .
*
* @ since 2.3 . 0
*
* @ see sanitize_post_field ()
*
* @ param object | WP_Post | array $post The Post Object or Array
* @ param string $context Optional . How to sanitize post fields .
* Accepts 'raw' , 'edit' , 'db' , or 'display' .
* Default 'display' .
* @ return object | WP_Post | array The now sanitized Post Object or Array ( will be the
* same type as $post ) .
*/
function sanitize_post ( $post , $context = 'display' ) {
if ( is_object ( $post ) ) {
// Check if post already filtered for this context.
if ( isset ( $post -> filter ) && $context == $post -> filter )
return $post ;
if ( ! isset ( $post -> ID ) )
$post -> ID = 0 ;
foreach ( array_keys ( get_object_vars ( $post )) as $field )
$post -> $field = sanitize_post_field ( $field , $post -> $field , $post -> ID , $context );
$post -> filter = $context ;
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} elseif ( is_array ( $post ) ) {
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// Check if post already filtered for this context.
if ( isset ( $post [ 'filter' ]) && $context == $post [ 'filter' ] )
return $post ;
if ( ! isset ( $post [ 'ID' ]) )
$post [ 'ID' ] = 0 ;
foreach ( array_keys ( $post ) as $field )
$post [ $field ] = sanitize_post_field ( $field , $post [ $field ], $post [ 'ID' ], $context );
$post [ 'filter' ] = $context ;
}
return $post ;
}
/**
* Sanitize post field based on context .
*
* Possible context values are : 'raw' , 'edit' , 'db' , 'display' , 'attribute' and
* 'js' . The 'display' context is used by default . 'attribute' and 'js' contexts
* are treated like 'display' when calling filters .
*
* @ since 2.3 . 0
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* @ since 4.4 . 0 Like `sanitize_post()` , `$context` defaults to 'display' .
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*
* @ param string $field The Post Object field name .
* @ param mixed $value The Post Object value .
* @ param int $post_id Post ID .
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* @ param string $context Optional . How to sanitize post fields . Looks for 'raw' , 'edit' ,
* 'db' , 'display' , 'attribute' and 'js' . Default 'display' .
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* @ return mixed Sanitized value .
*/
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function sanitize_post_field ( $field , $value , $post_id , $context = 'display' ) {
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$int_fields = array ( 'ID' , 'post_parent' , 'menu_order' );
if ( in_array ( $field , $int_fields ) )
$value = ( int ) $value ;
// Fields which contain arrays of integers.
$array_int_fields = array ( 'ancestors' );
if ( in_array ( $field , $array_int_fields ) ) {
$value = array_map ( 'absint' , $value );
return $value ;
}
if ( 'raw' == $context )
return $value ;
$prefixed = false ;
if ( false !== strpos ( $field , 'post_' ) ) {
$prefixed = true ;
$field_no_prefix = str_replace ( 'post_' , '' , $field );
}
if ( 'edit' == $context ) {
$format_to_edit = array ( 'post_content' , 'post_excerpt' , 'post_title' , 'post_password' );
if ( $prefixed ) {
/**
* Filter the value of a specific post field to edit .
*
* The dynamic portion of the hook name , `$field` , refers to the post
* field name .
*
* @ since 2.3 . 0
*
* @ param mixed $value Value of the post field .
* @ param int $post_id Post ID .
*/
$value = apply_filters ( " edit_ { $field } " , $value , $post_id );
/**
* Filter the value of a specific post field to edit .
*
* The dynamic portion of the hook name , `$field_no_prefix` , refers to
* the post field name .
*
* @ since 2.3 . 0
*
* @ param mixed $value Value of the post field .
* @ param int $post_id Post ID .
*/
$value = apply_filters ( " { $field_no_prefix } _edit_pre " , $value , $post_id );
} else {
$value = apply_filters ( " edit_post_ { $field } " , $value , $post_id );
}
if ( in_array ( $field , $format_to_edit ) ) {
if ( 'post_content' == $field )
$value = format_to_edit ( $value , user_can_richedit ());
else
$value = format_to_edit ( $value );
} else {
$value = esc_attr ( $value );
}
} elseif ( 'db' == $context ) {
if ( $prefixed ) {
/**
* Filter the value of a specific post field before saving .
*
* The dynamic portion of the hook name , `$field` , refers to the post
* field name .
*
* @ since 2.3 . 0
*
* @ param mixed $value Value of the post field .
*/
$value = apply_filters ( " pre_ { $field } " , $value );
/**
* Filter the value of a specific field before saving .
*
* The dynamic portion of the hook name , `$field_no_prefix` , refers
* to the post field name .
*
* @ since 2.3 . 0
*
* @ param mixed $value Value of the post field .
*/
$value = apply_filters ( " { $field_no_prefix } _save_pre " , $value );
} else {
$value = apply_filters ( " pre_post_ { $field } " , $value );
/**
* Filter the value of a specific post field before saving .
*
* The dynamic portion of the hook name , `$field` , refers to the post
* field name .
*
* @ since 2.3 . 0
*
* @ param mixed $value Value of the post field .
*/
$value = apply_filters ( " { $field } _pre " , $value );
}
} else {
// Use display filters by default.
if ( $prefixed ) {
/**
* Filter the value of a specific post field for display .
*
* The dynamic portion of the hook name , `$field` , refers to the post
* field name .
*
* @ since 2.3 . 0
*
* @ param mixed $value Value of the prefixed post field .
* @ param int $post_id Post ID .
* @ param string $context Context for how to sanitize the field . Possible
* values include 'raw' , 'edit' , 'db' , 'display' ,
* 'attribute' and 'js' .
*/
$value = apply_filters ( $field , $value , $post_id , $context );
} else {
$value = apply_filters ( " post_ { $field } " , $value , $post_id , $context );
}
}
if ( 'attribute' == $context )
$value = esc_attr ( $value );
elseif ( 'js' == $context )
$value = esc_js ( $value );
return $value ;
}
/**
* Make a post sticky .
*
* Sticky posts should be displayed at the top of the front page .
*
* @ since 2.7 . 0
*
* @ param int $post_id Post ID .
*/
function stick_post ( $post_id ) {
$stickies = get_option ( 'sticky_posts' );
if ( ! is_array ( $stickies ) )
$stickies = array ( $post_id );
if ( ! in_array ( $post_id , $stickies ) )
$stickies [] = $post_id ;
update_option ( 'sticky_posts' , $stickies );
}
/**
* Un - stick a post .
*
* Sticky posts should be displayed at the top of the front page .
*
* @ since 2.7 . 0
*
* @ param int $post_id Post ID .
*/
function unstick_post ( $post_id ) {
$stickies = get_option ( 'sticky_posts' );
if ( ! is_array ( $stickies ) )
return ;
if ( ! in_array ( $post_id , $stickies ) )
return ;
$offset = array_search ( $post_id , $stickies );
if ( false === $offset )
return ;
array_splice ( $stickies , $offset , 1 );
update_option ( 'sticky_posts' , $stickies );
}
/**
* Return the cache key for wp_count_posts () based on the passed arguments .
*
* @ since 3.9 . 0
*
* @ param string $type Optional . Post type to retrieve count Default 'post' .
* @ param string $perm Optional . 'readable' or empty . Default empty .
* @ return string The cache key .
*/
function _count_posts_cache_key ( $type = 'post' , $perm = '' ) {
$cache_key = 'posts-' . $type ;
if ( 'readable' == $perm && is_user_logged_in () ) {
$post_type_object = get_post_type_object ( $type );
if ( $post_type_object && ! current_user_can ( $post_type_object -> cap -> read_private_posts ) ) {
$cache_key .= '_' . $perm . '_' . get_current_user_id ();
}
}
return $cache_key ;
}
/**
* Count number of posts of a post type and if user has permissions to view .
*
* This function provides an efficient method of finding the amount of post ' s
* type a blog has . Another method is to count the amount of items in
* get_posts (), but that method has a lot of overhead with doing so . Therefore ,
* when developing for 2.5 + , use this function instead .
*
* The $perm parameter checks for 'readable' value and if the user can read
* private posts , it will display that for the user that is signed in .
*
* @ since 2.5 . 0
*
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* @ global wpdb $wpdb WordPress database abstraction object .
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*
* @ param string $type Optional . Post type to retrieve count . Default 'post' .
* @ param string $perm Optional . 'readable' or empty . Default empty .
* @ return object Number of posts for each status .
*/
function wp_count_posts ( $type = 'post' , $perm = '' ) {
global $wpdb ;
if ( ! post_type_exists ( $type ) )
return new stdClass ;
$cache_key = _count_posts_cache_key ( $type , $perm );
$counts = wp_cache_get ( $cache_key , 'counts' );
if ( false !== $counts ) {
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/** This filter is documented in wp-includes/post-functions.php */
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return apply_filters ( 'wp_count_posts' , $counts , $type , $perm );
}
$query = " SELECT post_status, COUNT( * ) AS num_posts FROM { $wpdb -> posts } WHERE post_type = %s " ;
if ( 'readable' == $perm && is_user_logged_in () ) {
$post_type_object = get_post_type_object ( $type );
if ( ! current_user_can ( $post_type_object -> cap -> read_private_posts ) ) {
$query .= $wpdb -> prepare ( " AND (post_status != 'private' OR ( post_author = %d AND post_status = 'private' )) " ,
get_current_user_id ()
);
}
}
$query .= ' GROUP BY post_status' ;
$results = ( array ) $wpdb -> get_results ( $wpdb -> prepare ( $query , $type ), ARRAY_A );
$counts = array_fill_keys ( get_post_stati (), 0 );
foreach ( $results as $row ) {
$counts [ $row [ 'post_status' ] ] = $row [ 'num_posts' ];
}
$counts = ( object ) $counts ;
wp_cache_set ( $cache_key , $counts , 'counts' );
/**
* Modify returned post counts by status for the current post type .
*
* @ since 3.7 . 0
*
* @ param object $counts An object containing the current post_type ' s post
* counts by status .
* @ param string $type Post type .
* @ param string $perm The permission to determine if the posts are 'readable'
* by the current user .
*/
return apply_filters ( 'wp_count_posts' , $counts , $type , $perm );
}
/**
* Count number of attachments for the mime type ( s ) .
*
* If you set the optional mime_type parameter , then an array will still be
* returned , but will only have the item you are looking for . It does not give
* you the number of attachments that are children of a post . You can get that
* by counting the number of children that post has .
*
* @ since 2.5 . 0
*
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* @ global wpdb $wpdb WordPress database abstraction object .
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*
* @ param string | array $mime_type Optional . Array or comma - separated list of
* MIME patterns . Default empty .
* @ return object An object containing the attachment counts by mime type .
*/
function wp_count_attachments ( $mime_type = '' ) {
global $wpdb ;
$and = wp_post_mime_type_where ( $mime_type );
$count = $wpdb -> get_results ( " SELECT post_mime_type, COUNT( * ) AS num_posts FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status != 'trash' $and GROUP BY post_mime_type " , ARRAY_A );
$counts = array ();
foreach ( ( array ) $count as $row ) {
$counts [ $row [ 'post_mime_type' ] ] = $row [ 'num_posts' ];
}
$counts [ 'trash' ] = $wpdb -> get_var ( " SELECT COUNT( * ) FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status = 'trash' $and " );
/**
* Modify returned attachment counts by mime type .
*
* @ since 3.7 . 0
*
* @ param object $counts An object containing the attachment counts by
* mime type .
* @ param string $mime_type The mime type pattern used to filter the attachments
* counted .
*/
return apply_filters ( 'wp_count_attachments' , ( object ) $counts , $mime_type );
}
/**
* Get default post mime types .
*
* @ since 2.9 . 0
*
* @ return array List of post mime types .
*/
function get_post_mime_types () {
$post_mime_types = array ( // array( adj, noun )
'image' => array ( __ ( 'Images' ), __ ( 'Manage Images' ), _n_noop ( 'Image <span class="count">(%s)</span>' , 'Images <span class="count">(%s)</span>' )),
'audio' => array ( __ ( 'Audio' ), __ ( 'Manage Audio' ), _n_noop ( 'Audio <span class="count">(%s)</span>' , 'Audio <span class="count">(%s)</span>' )),
'video' => array ( __ ( 'Video' ), __ ( 'Manage Video' ), _n_noop ( 'Video <span class="count">(%s)</span>' , 'Video <span class="count">(%s)</span>' )),
);
/**
* Filter the default list of post mime types .
*
* @ since 2.5 . 0
*
* @ param array $post_mime_types Default list of post mime types .
*/
return apply_filters ( 'post_mime_types' , $post_mime_types );
}
/**
* Check a MIME - Type against a list .
*
* If the wildcard_mime_types parameter is a string , it must be comma separated
* list . If the real_mime_types is a string , it is also comma separated to
* create the list .
*
* @ since 2.5 . 0
*
* @ param string | array $wildcard_mime_types Mime types , e . g . audio / mpeg or image ( same as image /* )
* or flash ( same as * flash * ) .
* @ param string | array $real_mime_types Real post mime type values .
* @ return array array ( wildcard => array ( real types )) .
*/
function wp_match_mime_types ( $wildcard_mime_types , $real_mime_types ) {
$matches = array ();
if ( is_string ( $wildcard_mime_types ) ) {
$wildcard_mime_types = array_map ( 'trim' , explode ( ',' , $wildcard_mime_types ) );
}
if ( is_string ( $real_mime_types ) ) {
$real_mime_types = array_map ( 'trim' , explode ( ',' , $real_mime_types ) );
}
$patternses = array ();
$wild = '[-._a-z0-9]*' ;
foreach ( ( array ) $wildcard_mime_types as $type ) {
$mimes = array_map ( 'trim' , explode ( ',' , $type ) );
foreach ( $mimes as $mime ) {
$regex = str_replace ( '__wildcard__' , $wild , preg_quote ( str_replace ( '*' , '__wildcard__' , $mime ) ) );
$patternses [][ $type ] = " ^ $regex $ " ;
if ( false === strpos ( $mime , '/' ) ) {
$patternses [][ $type ] = " ^ $regex / " ;
$patternses [][ $type ] = $regex ;
}
}
}
asort ( $patternses );
foreach ( $patternses as $patterns ) {
foreach ( $patterns as $type => $pattern ) {
foreach ( ( array ) $real_mime_types as $real ) {
if ( preg_match ( " # $pattern # " , $real ) && ( empty ( $matches [ $type ] ) || false === array_search ( $real , $matches [ $type ] ) ) ) {
$matches [ $type ][] = $real ;
}
}
}
}
return $matches ;
}
/**
* Convert MIME types into SQL .
*
* @ since 2.5 . 0
*
* @ param string | array $post_mime_types List of mime types or comma separated string
* of mime types .
* @ param string $table_alias Optional . Specify a table alias , if needed .
* Default empty .
* @ return string The SQL AND clause for mime searching .
*/
function wp_post_mime_type_where ( $post_mime_types , $table_alias = '' ) {
$where = '' ;
$wildcards = array ( '' , '%' , '%/%' );
if ( is_string ( $post_mime_types ) )
$post_mime_types = array_map ( 'trim' , explode ( ',' , $post_mime_types ));
$wheres = array ();
foreach ( ( array ) $post_mime_types as $mime_type ) {
$mime_type = preg_replace ( '/\s/' , '' , $mime_type );
$slashpos = strpos ( $mime_type , '/' );
if ( false !== $slashpos ) {
$mime_group = preg_replace ( '/[^-*.a-zA-Z0-9]/' , '' , substr ( $mime_type , 0 , $slashpos ));
$mime_subgroup = preg_replace ( '/[^-*.+a-zA-Z0-9]/' , '' , substr ( $mime_type , $slashpos + 1 ));
if ( empty ( $mime_subgroup ) )
$mime_subgroup = '*' ;
else
$mime_subgroup = str_replace ( '/' , '' , $mime_subgroup );
$mime_pattern = " $mime_group / $mime_subgroup " ;
} else {
$mime_pattern = preg_replace ( '/[^-*.a-zA-Z0-9]/' , '' , $mime_type );
if ( false === strpos ( $mime_pattern , '*' ) )
$mime_pattern .= '/*' ;
}
$mime_pattern = preg_replace ( '/\*+/' , '%' , $mime_pattern );
if ( in_array ( $mime_type , $wildcards ) )
return '' ;
if ( false !== strpos ( $mime_pattern , '%' ) )
$wheres [] = empty ( $table_alias ) ? " post_mime_type LIKE ' $mime_pattern ' " : " $table_alias .post_mime_type LIKE ' $mime_pattern ' " ;
else
$wheres [] = empty ( $table_alias ) ? " post_mime_type = ' $mime_pattern ' " : " $table_alias .post_mime_type = ' $mime_pattern ' " ;
}
if ( ! empty ( $wheres ) )
$where = ' AND (' . join ( ' OR ' , $wheres ) . ') ' ;
return $where ;
}
/**
* Trash or delete a post or page .
*
* When the post and page is permanently deleted , everything that is tied to
* it is deleted also . This includes comments , post meta fields , and terms
* associated with the post .
*
* The post or page is moved to trash instead of permanently deleted unless
* trash is disabled , item is already in the trash , or $force_delete is true .
*
* @ since 1.0 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
* @ see wp_delete_attachment ()
* @ see wp_trash_post ()
*
* @ param int $postid Optional . Post ID . Default 0.
* @ param bool $force_delete Optional . Whether to bypass trash and force deletion .
* Default false .
* @ return array | false | WP_Post False on failure .
*/
function wp_delete_post ( $postid = 0 , $force_delete = false ) {
global $wpdb ;
if ( ! $post = $wpdb -> get_row ( $wpdb -> prepare ( " SELECT * FROM $wpdb->posts WHERE ID = %d " , $postid )) )
return $post ;
if ( ! $force_delete && ( $post -> post_type == 'post' || $post -> post_type == 'page' ) && get_post_status ( $postid ) != 'trash' && EMPTY_TRASH_DAYS )
return wp_trash_post ( $postid );
if ( $post -> post_type == 'attachment' )
return wp_delete_attachment ( $postid , $force_delete );
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/**
* Filter whether a post deletion should take place .
*
* @ since 4.4 . 0
*
* @ param bool $delete Whether to go forward with deletion .
* @ param WP_Post $post Post object .
* @ param bool $force_delete Whether to bypass the trash .
*/
$check = apply_filters ( 'pre_delete_post' , null , $post , $force_delete );
if ( null !== $check ) {
return $check ;
}
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/**
* Fires before a post is deleted , at the start of wp_delete_post () .
*
* @ since 3.2 . 0
*
* @ see wp_delete_post ()
*
* @ param int $postid Post ID .
*/
do_action ( 'before_delete_post' , $postid );
delete_post_meta ( $postid , '_wp_trash_meta_status' );
delete_post_meta ( $postid , '_wp_trash_meta_time' );
wp_delete_object_term_relationships ( $postid , get_object_taxonomies ( $post -> post_type ));
$parent_data = array ( 'post_parent' => $post -> post_parent );
$parent_where = array ( 'post_parent' => $postid );
if ( is_post_type_hierarchical ( $post -> post_type ) ) {
// Point children of this page to its parent, also clean the cache of affected children.
$children_query = $wpdb -> prepare ( " SELECT * FROM $wpdb->posts WHERE post_parent = %d AND post_type = %s " , $postid , $post -> post_type );
$children = $wpdb -> get_results ( $children_query );
$wpdb -> update ( $wpdb -> posts , $parent_data , $parent_where + array ( 'post_type' => $post -> post_type ) );
}
// Do raw query. wp_get_post_revisions() is filtered.
$revision_ids = $wpdb -> get_col ( $wpdb -> prepare ( " SELECT ID FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'revision' " , $postid ) );
// Use wp_delete_post (via wp_delete_post_revision) again. Ensures any meta/misplaced data gets cleaned up.
foreach ( $revision_ids as $revision_id )
wp_delete_post_revision ( $revision_id );
// Point all attachments to this post up one level.
$wpdb -> update ( $wpdb -> posts , $parent_data , $parent_where + array ( 'post_type' => 'attachment' ) );
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wp_defer_comment_counting ( true );
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$comment_ids = $wpdb -> get_col ( $wpdb -> prepare ( " SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d " , $postid ));
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foreach ( $comment_ids as $comment_id ) {
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wp_delete_comment ( $comment_id , true );
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}
wp_defer_comment_counting ( false );
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$post_meta_ids = $wpdb -> get_col ( $wpdb -> prepare ( " SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d " , $postid ));
foreach ( $post_meta_ids as $mid )
delete_metadata_by_mid ( 'post' , $mid );
/**
* Fires immediately before a post is deleted from the database .
*
* @ since 1.2 . 0
*
* @ param int $postid Post ID .
*/
do_action ( 'delete_post' , $postid );
$result = $wpdb -> delete ( $wpdb -> posts , array ( 'ID' => $postid ) );
if ( ! $result ) {
return false ;
}
/**
* Fires immediately after a post is deleted from the database .
*
* @ since 2.2 . 0
*
* @ param int $postid Post ID .
*/
do_action ( 'deleted_post' , $postid );
clean_post_cache ( $post );
if ( is_post_type_hierarchical ( $post -> post_type ) && $children ) {
foreach ( $children as $child )
clean_post_cache ( $child );
}
wp_clear_scheduled_hook ( 'publish_future_post' , array ( $postid ) );
/**
* Fires after a post is deleted , at the conclusion of wp_delete_post () .
*
* @ since 3.2 . 0
*
* @ see wp_delete_post ()
*
* @ param int $postid Post ID .
*/
do_action ( 'after_delete_post' , $postid );
return $post ;
}
/**
* Reset the page_on_front , show_on_front , and page_for_post settings when
* a linked page is deleted or trashed .
*
* Also ensures the post is no longer sticky .
*
* @ since 3.7 . 0
* @ access private
*
* @ param int $post_id Post ID .
*/
function _reset_front_page_settings_for_post ( $post_id ) {
$post = get_post ( $post_id );
if ( 'page' == $post -> post_type ) {
/*
* If the page is defined in option page_on_front or post_for_posts ,
* adjust the corresponding options .
*/
if ( get_option ( 'page_on_front' ) == $post -> ID ) {
update_option ( 'show_on_front' , 'posts' );
update_option ( 'page_on_front' , 0 );
}
if ( get_option ( 'page_for_posts' ) == $post -> ID ) {
delete_option ( 'page_for_posts' , 0 );
}
}
unstick_post ( $post -> ID );
}
/**
* Move a post or page to the Trash
*
* If trash is disabled , the post or page is permanently deleted .
*
* @ since 2.9 . 0
*
* @ see wp_delete_post ()
*
* @ param int $post_id Optional . Post ID . Default is ID of the global $post
* if EMPTY_TRASH_DAYS equals true .
* @ return false | array | WP_Post | null Post data array , otherwise false .
*/
function wp_trash_post ( $post_id = 0 ) {
if ( ! EMPTY_TRASH_DAYS )
return wp_delete_post ( $post_id , true );
if ( ! $post = get_post ( $post_id , ARRAY_A ) )
return $post ;
if ( $post [ 'post_status' ] == 'trash' )
return false ;
/**
* Fires before a post is sent to the trash .
*
* @ since 3.3 . 0
*
* @ param int $post_id Post ID .
*/
do_action ( 'wp_trash_post' , $post_id );
add_post_meta ( $post_id , '_wp_trash_meta_status' , $post [ 'post_status' ]);
add_post_meta ( $post_id , '_wp_trash_meta_time' , time ());
$post [ 'post_status' ] = 'trash' ;
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wp_insert_post ( wp_slash ( $post ) );
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wp_trash_post_comments ( $post_id );
/**
* Fires after a post is sent to the trash .
*
* @ since 2.9 . 0
*
* @ param int $post_id Post ID .
*/
do_action ( 'trashed_post' , $post_id );
return $post ;
}
/**
* Restore a post or page from the Trash .
*
* @ since 2.9 . 0
*
* @ param int $post_id Optional . Post ID . Default is ID of the global $post .
* @ return WP_Post | false WP_Post object . False on failure .
*/
function wp_untrash_post ( $post_id = 0 ) {
if ( ! $post = get_post ( $post_id , ARRAY_A ) )
return $post ;
if ( $post [ 'post_status' ] != 'trash' )
return false ;
/**
* Fires before a post is restored from the trash .
*
* @ since 2.9 . 0
*
* @ param int $post_id Post ID .
*/
do_action ( 'untrash_post' , $post_id );
$post_status = get_post_meta ( $post_id , '_wp_trash_meta_status' , true );
$post [ 'post_status' ] = $post_status ;
delete_post_meta ( $post_id , '_wp_trash_meta_status' );
delete_post_meta ( $post_id , '_wp_trash_meta_time' );
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wp_insert_post ( wp_slash ( $post ) );
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wp_untrash_post_comments ( $post_id );
/**
* Fires after a post is restored from the trash .
*
* @ since 2.9 . 0
*
* @ param int $post_id Post ID .
*/
do_action ( 'untrashed_post' , $post_id );
return $post ;
}
/**
* Moves comments for a post to the trash .
*
* @ since 2.9 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param int | WP_Post | null $post Optional . Post ID or post object . Defaults to global $post .
* @ return mixed | void False on failure .
*/
function wp_trash_post_comments ( $post = null ) {
global $wpdb ;
$post = get_post ( $post );
if ( empty ( $post ) )
return ;
$post_id = $post -> ID ;
/**
* Fires before comments are sent to the trash .
*
* @ since 2.9 . 0
*
* @ param int $post_id Post ID .
*/
do_action ( 'trash_post_comments' , $post_id );
$comments = $wpdb -> get_results ( $wpdb -> prepare ( " SELECT comment_ID, comment_approved FROM $wpdb->comments WHERE comment_post_ID = %d " , $post_id ) );
if ( empty ( $comments ) )
return ;
// Cache current status for each comment.
$statuses = array ();
foreach ( $comments as $comment )
$statuses [ $comment -> comment_ID ] = $comment -> comment_approved ;
add_post_meta ( $post_id , '_wp_trash_meta_comments_status' , $statuses );
// Set status for all comments to post-trashed.
$result = $wpdb -> update ( $wpdb -> comments , array ( 'comment_approved' => 'post-trashed' ), array ( 'comment_post_ID' => $post_id ));
clean_comment_cache ( array_keys ( $statuses ) );
/**
* Fires after comments are sent to the trash .
*
* @ since 2.9 . 0
*
* @ param int $post_id Post ID .
* @ param array $statuses Array of comment statuses .
*/
do_action ( 'trashed_post_comments' , $post_id , $statuses );
return $result ;
}
/**
* Restore comments for a post from the trash .
*
* @ since 2.9 . 0
*
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* @ global wpdb $wpdb WordPress database abstraction object .
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*
* @ param int | WP_Post | null $post Optional . Post ID or post object . Defaults to global $post .
* @ return true | void
*/
function wp_untrash_post_comments ( $post = null ) {
global $wpdb ;
$post = get_post ( $post );
if ( empty ( $post ) )
return ;
$post_id = $post -> ID ;
$statuses = get_post_meta ( $post_id , '_wp_trash_meta_comments_status' , true );
if ( empty ( $statuses ) )
return true ;
/**
* Fires before comments are restored for a post from the trash .
*
* @ since 2.9 . 0
*
* @ param int $post_id Post ID .
*/
do_action ( 'untrash_post_comments' , $post_id );
// Restore each comment to its original status.
$group_by_status = array ();
foreach ( $statuses as $comment_id => $comment_status )
$group_by_status [ $comment_status ][] = $comment_id ;
foreach ( $group_by_status as $status => $comments ) {
// Sanity check. This shouldn't happen.
if ( 'post-trashed' == $status ) {
$status = '0' ;
}
$comments_in = implode ( ', ' , array_map ( 'intval' , $comments ) );
$wpdb -> query ( $wpdb -> prepare ( " UPDATE $wpdb->comments SET comment_approved = %s WHERE comment_ID IN ( $comments_in ) " , $status ) );
}
clean_comment_cache ( array_keys ( $statuses ) );
delete_post_meta ( $post_id , '_wp_trash_meta_comments_status' );
/**
* Fires after comments are restored for a post from the trash .
*
* @ since 2.9 . 0
*
* @ param int $post_id Post ID .
*/
do_action ( 'untrashed_post_comments' , $post_id );
}
/**
* Retrieve the list of categories for a post .
*
* Compatibility layer for themes and plugins . Also an easy layer of abstraction
* away from the complexity of the taxonomy layer .
*
* @ since 2.1 . 0
*
* @ see wp_get_object_terms ()
*
* @ param int $post_id Optional . The Post ID . Does not default to the ID of the
* global $post . Default 0.
* @ param array $args Optional . Category arguments . Default empty .
* @ return array List of categories .
*/
function wp_get_post_categories ( $post_id = 0 , $args = array () ) {
$post_id = ( int ) $post_id ;
$defaults = array ( 'fields' => 'ids' );
$args = wp_parse_args ( $args , $defaults );
$cats = wp_get_object_terms ( $post_id , 'category' , $args );
return $cats ;
}
/**
* Retrieve the tags for a post .
*
* There is only one default for this function , called 'fields' and by default
* is set to 'all' . There are other defaults that can be overridden in
* { @ link wp_get_object_terms ()} .
*
* @ since 2.3 . 0
*
* @ param int $post_id Optional . The Post ID . Does not default to the ID of the
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* global $post . Default 0.
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* @ param array $args Optional . Overwrite the defaults
* @ return array List of post tags .
*/
function wp_get_post_tags ( $post_id = 0 , $args = array () ) {
return wp_get_post_terms ( $post_id , 'post_tag' , $args );
}
/**
* Retrieve the terms for a post .
*
* There is only one default for this function , called 'fields' and by default
* is set to 'all' . There are other defaults that can be overridden in
* { @ link wp_get_object_terms ()} .
*
* @ since 2.8 . 0
*
* @ param int $post_id Optional . The Post ID . Does not default to the ID of the
* global $post . Default 0.
* @ param string $taxonomy Optional . The taxonomy for which to retrieve terms . Default 'post_tag' .
* @ param array $args Optional . { @ link wp_get_object_terms ()} arguments . Default empty array .
* @ return array | WP_Error List of post terms or empty array if no terms were found . WP_Error object
* if `$taxonomy` doesn ' t exist .
*/
function wp_get_post_terms ( $post_id = 0 , $taxonomy = 'post_tag' , $args = array () ) {
$post_id = ( int ) $post_id ;
$defaults = array ( 'fields' => 'all' );
$args = wp_parse_args ( $args , $defaults );
$tags = wp_get_object_terms ( $post_id , $taxonomy , $args );
return $tags ;
}
/**
* Retrieve a number of recent posts .
*
* @ since 1.0 . 0
*
* @ see get_posts ()
*
* @ param array $args Optional . Arguments to retrieve posts . Default empty array .
* @ param string $output Optional . Type of output . Accepts ARRAY_A or '' . Default ARRAY_A .
* @ return array | false Associative array if $output equals ARRAY_A , array or false if no results .
*/
function wp_get_recent_posts ( $args = array (), $output = ARRAY_A ) {
if ( is_numeric ( $args ) ) {
_deprecated_argument ( __FUNCTION__ , '3.1' , __ ( 'Passing an integer number of posts is deprecated. Pass an array of arguments instead.' ) );
$args = array ( 'numberposts' => absint ( $args ) );
}
// Set default arguments.
$defaults = array (
'numberposts' => 10 , 'offset' => 0 ,
'category' => 0 , 'orderby' => 'post_date' ,
'order' => 'DESC' , 'include' => '' ,
'exclude' => '' , 'meta_key' => '' ,
'meta_value' => '' , 'post_type' => 'post' , 'post_status' => 'draft, publish, future, pending, private' ,
'suppress_filters' => true
);
$r = wp_parse_args ( $args , $defaults );
$results = get_posts ( $r );
// Backward compatibility. Prior to 3.1 expected posts to be returned in array.
if ( ARRAY_A == $output ){
foreach ( $results as $key => $result ) {
$results [ $key ] = get_object_vars ( $result );
}
return $results ? $results : array ();
}
return $results ? $results : false ;
}
/**
* Insert or update a post .
*
* If the $postarr parameter has 'ID' set to a value , then post will be updated .
*
* You can set the post date manually , by setting the values for 'post_date'
* and 'post_date_gmt' keys . You can close the comments or open the comments by
* setting the value for 'comment_status' key .
*
* @ since 1.0 . 0
* @ since 4.2 . 0 Support was added for encoding emoji in the post title , content , and excerpt .
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* @ since 4.4 . 0 A 'meta_input' array can now be passed to `$postarr` to add post meta data .
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*
* @ see sanitize_post ()
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param array $postarr {
* An array of elements that make up a post to update or insert .
*
* @ type int $ID The post ID . If equal to something other than 0 ,
* the post with that ID will be updated . Default 0.
* @ type int $post_author The ID of the user who added the post . Default is
* the current user ID .
* @ type string $post_date The date of the post . Default is the current time .
* @ type string $post_date_gmt The date of the post in the GMT timezone . Default is
* the value of `$post_date` .
* @ type mixed $post_content The post content . Default empty .
* @ type string $post_content_filtered The filtered post content . Default empty .
* @ type string $post_title The post title . Default empty .
* @ type string $post_excerpt The post excerpt . Default empty .
* @ type string $post_status The post status . Default 'draft' .
* @ type string $post_type The post type . Default 'post' .
* @ type string $comment_status Whether the post can accept comments . Accepts 'open' or 'closed' .
* Default is the value of 'default_comment_status' option .
* @ type string $ping_status Whether the post can accept pings . Accepts 'open' or 'closed' .
* Default is the value of 'default_ping_status' option .
* @ type string $post_password The password to access the post . Default empty .
* @ type string $post_name The post name . Default is the sanitized post title .
* @ type string $to_ping Space or carriage return - separated list of URLs to ping .
* Default empty .
* @ type string $pinged Space or carriage return - separated list of URLs that have
* been pinged . Default empty .
* @ type string $post_modified The date when the post was last modified . Default is
* the current time .
* @ type string $post_modified_gmt The date when the post was last modified in the GMT
* timezone . Default is the current time .
* @ type int $post_parent Set this for the post it belongs to , if any . Default 0.
* @ type int $menu_order The order the post should be displayed in . Default 0.
* @ type string $post_mime_type The mime type of the post . Default empty .
* @ type string $guid Global Unique ID for referencing the post . Default empty .
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* @ type array $tax_input Array of taxonomy terms keyed by their taxonomy name . Default empty .
* @ type array $meta_input Array of post meta values keyed by their post meta key . Default empty .
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* }
* @ param bool $wp_error Optional . Whether to allow return of WP_Error on failure . Default false .
* @ return int | WP_Error The post ID on success . The value 0 or WP_Error on failure .
*/
function wp_insert_post ( $postarr , $wp_error = false ) {
global $wpdb ;
$user_id = get_current_user_id ();
$defaults = array (
'post_author' => $user_id ,
'post_content' => '' ,
'post_content_filtered' => '' ,
'post_title' => '' ,
'post_excerpt' => '' ,
'post_status' => 'draft' ,
'post_type' => 'post' ,
'comment_status' => '' ,
'ping_status' => '' ,
'post_password' => '' ,
'to_ping' => '' ,
'pinged' => '' ,
'post_parent' => 0 ,
'menu_order' => 0 ,
'guid' => '' ,
'import_id' => 0 ,
'context' => '' ,
);
$postarr = wp_parse_args ( $postarr , $defaults );
unset ( $postarr [ 'filter' ] );
$postarr = sanitize_post ( $postarr , 'db' );
// Are we updating or creating?
$post_ID = 0 ;
$update = false ;
$guid = $postarr [ 'guid' ];
if ( ! empty ( $postarr [ 'ID' ] ) ) {
$update = true ;
// Get the post ID and GUID.
$post_ID = $postarr [ 'ID' ];
$post_before = get_post ( $post_ID );
if ( is_null ( $post_before ) ) {
if ( $wp_error ) {
return new WP_Error ( 'invalid_post' , __ ( 'Invalid post ID.' ) );
}
return 0 ;
}
$guid = get_post_field ( 'guid' , $post_ID );
$previous_status = get_post_field ( 'post_status' , $post_ID );
} else {
$previous_status = 'new' ;
}
$post_type = empty ( $postarr [ 'post_type' ] ) ? 'post' : $postarr [ 'post_type' ];
$post_title = $postarr [ 'post_title' ];
$post_content = $postarr [ 'post_content' ];
$post_excerpt = $postarr [ 'post_excerpt' ];
if ( isset ( $postarr [ 'post_name' ] ) ) {
$post_name = $postarr [ 'post_name' ];
}
$maybe_empty = 'attachment' !== $post_type
&& ! $post_content && ! $post_title && ! $post_excerpt
&& post_type_supports ( $post_type , 'editor' )
&& post_type_supports ( $post_type , 'title' )
&& post_type_supports ( $post_type , 'excerpt' );
/**
* Filter whether the post should be considered " empty " .
*
* The post is considered " empty " if both :
* 1. The post type supports the title , editor , and excerpt fields
* 2. The title , editor , and excerpt fields are all empty
*
* Returning a truthy value to the filter will effectively short - circuit
* the new post being inserted , returning 0. If $wp_error is true , a WP_Error
* will be returned instead .
*
* @ since 3.3 . 0
*
* @ param bool $maybe_empty Whether the post should be considered " empty " .
* @ param array $postarr Array of post data .
*/
if ( apply_filters ( 'wp_insert_post_empty_content' , $maybe_empty , $postarr ) ) {
if ( $wp_error ) {
return new WP_Error ( 'empty_content' , __ ( 'Content, title, and excerpt are empty.' ) );
} else {
return 0 ;
}
}
$post_status = empty ( $postarr [ 'post_status' ] ) ? 'draft' : $postarr [ 'post_status' ];
if ( 'attachment' === $post_type && ! in_array ( $post_status , array ( 'inherit' , 'private' , 'trash' ) ) ) {
$post_status = 'inherit' ;
}
if ( ! empty ( $postarr [ 'post_category' ] ) ) {
// Filter out empty terms.
$post_category = array_filter ( $postarr [ 'post_category' ] );
}
// Make sure we set a valid category.
if ( empty ( $post_category ) || 0 == count ( $post_category ) || ! is_array ( $post_category ) ) {
// 'post' requires at least one category.
if ( 'post' == $post_type && 'auto-draft' != $post_status ) {
$post_category = array ( get_option ( 'default_category' ) );
} else {
$post_category = array ();
}
}
// Don't allow contributors to set the post slug for pending review posts.
if ( 'pending' == $post_status && ! current_user_can ( 'publish_posts' ) ) {
$post_name = '' ;
}
/*
* Create a valid post name . Drafts and pending posts are allowed to have
* an empty post name .
*/
if ( empty ( $post_name ) ) {
if ( ! in_array ( $post_status , array ( 'draft' , 'pending' , 'auto-draft' ) ) ) {
$post_name = sanitize_title ( $post_title );
} else {
$post_name = '' ;
}
} else {
// On updates, we need to check to see if it's using the old, fixed sanitization context.
$check_name = sanitize_title ( $post_name , '' , 'old-save' );
if ( $update && strtolower ( urlencode ( $post_name ) ) == $check_name && get_post_field ( 'post_name' , $post_ID ) == $check_name ) {
$post_name = $check_name ;
} else { // new post, or slug has changed.
$post_name = sanitize_title ( $post_name );
}
}
/*
* If the post date is empty ( due to having been new or a draft ) and status
* is not 'draft' or 'pending' , set date to now .
*/
if ( empty ( $postarr [ 'post_date' ] ) || '0000-00-00 00:00:00' == $postarr [ 'post_date' ] ) {
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if ( empty ( $postarr [ 'post_date_gmt' ] ) || '0000-00-00 00:00:00' == $postarr [ 'post_date_gmt' ] ) {
$post_date = current_time ( 'mysql' );
} else {
$post_date = get_date_from_gmt ( $postarr [ 'post_date_gmt' ] );
}
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} else {
$post_date = $postarr [ 'post_date' ];
}
// Validate the date.
$mm = substr ( $post_date , 5 , 2 );
$jj = substr ( $post_date , 8 , 2 );
$aa = substr ( $post_date , 0 , 4 );
$valid_date = wp_checkdate ( $mm , $jj , $aa , $post_date );
if ( ! $valid_date ) {
if ( $wp_error ) {
return new WP_Error ( 'invalid_date' , __ ( 'Whoops, the provided date is invalid.' ) );
} else {
return 0 ;
}
}
if ( empty ( $postarr [ 'post_date_gmt' ] ) || '0000-00-00 00:00:00' == $postarr [ 'post_date_gmt' ] ) {
if ( ! in_array ( $post_status , array ( 'draft' , 'pending' , 'auto-draft' ) ) ) {
$post_date_gmt = get_gmt_from_date ( $post_date );
} else {
$post_date_gmt = '0000-00-00 00:00:00' ;
}
} else {
$post_date_gmt = $postarr [ 'post_date_gmt' ];
}
if ( $update || '0000-00-00 00:00:00' == $post_date ) {
$post_modified = current_time ( 'mysql' );
$post_modified_gmt = current_time ( 'mysql' , 1 );
} else {
$post_modified = $post_date ;
$post_modified_gmt = $post_date_gmt ;
}
if ( 'attachment' !== $post_type ) {
if ( 'publish' == $post_status ) {
$now = gmdate ( 'Y-m-d H:i:59' );
if ( mysql2date ( 'U' , $post_date_gmt , false ) > mysql2date ( 'U' , $now , false ) ) {
$post_status = 'future' ;
}
} elseif ( 'future' == $post_status ) {
$now = gmdate ( 'Y-m-d H:i:59' );
if ( mysql2date ( 'U' , $post_date_gmt , false ) <= mysql2date ( 'U' , $now , false ) ) {
$post_status = 'publish' ;
}
}
}
// Comment status.
if ( empty ( $postarr [ 'comment_status' ] ) ) {
if ( $update ) {
$comment_status = 'closed' ;
} else {
$comment_status = get_default_comment_status ( $post_type );
}
} else {
$comment_status = $postarr [ 'comment_status' ];
}
// These variables are needed by compact() later.
$post_content_filtered = $postarr [ 'post_content_filtered' ];
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$post_author = isset ( $postarr [ 'post_author' ] ) ? $postarr [ 'post_author' ] : $user_id ;
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$ping_status = empty ( $postarr [ 'ping_status' ] ) ? get_default_comment_status ( $post_type , 'pingback' ) : $postarr [ 'ping_status' ];
$to_ping = isset ( $postarr [ 'to_ping' ] ) ? sanitize_trackback_urls ( $postarr [ 'to_ping' ] ) : '' ;
$pinged = isset ( $postarr [ 'pinged' ] ) ? $postarr [ 'pinged' ] : '' ;
$import_id = isset ( $postarr [ 'import_id' ] ) ? $postarr [ 'import_id' ] : 0 ;
/*
* The 'wp_insert_post_parent' filter expects all variables to be present .
* Previously , these variables would have already been extracted
*/
if ( isset ( $postarr [ 'menu_order' ] ) ) {
$menu_order = ( int ) $postarr [ 'menu_order' ];
} else {
$menu_order = 0 ;
}
$post_password = isset ( $postarr [ 'post_password' ] ) ? $postarr [ 'post_password' ] : '' ;
if ( 'private' == $post_status ) {
$post_password = '' ;
}
if ( isset ( $postarr [ 'post_parent' ] ) ) {
$post_parent = ( int ) $postarr [ 'post_parent' ];
} else {
$post_parent = 0 ;
}
/**
* Filter the post parent -- used to check for and prevent hierarchy loops .
*
* @ since 3.1 . 0
*
* @ param int $post_parent Post parent ID .
* @ param int $post_ID Post ID .
* @ param array $new_postarr Array of parsed post data .
* @ param array $postarr Array of sanitized , but otherwise unmodified post data .
*/
$post_parent = apply_filters ( 'wp_insert_post_parent' , $post_parent , $post_ID , compact ( array_keys ( $postarr ) ), $postarr );
$post_name = wp_unique_post_slug ( $post_name , $post_ID , $post_status , $post_type , $post_parent );
// Don't unslash.
$post_mime_type = isset ( $postarr [ 'post_mime_type' ] ) ? $postarr [ 'post_mime_type' ] : '' ;
// Expected_slashed (everything!).
$data = compact ( 'post_author' , 'post_date' , 'post_date_gmt' , 'post_content' , 'post_content_filtered' , 'post_title' , 'post_excerpt' , 'post_status' , 'post_type' , 'comment_status' , 'ping_status' , 'post_password' , 'post_name' , 'to_ping' , 'pinged' , 'post_modified' , 'post_modified_gmt' , 'post_parent' , 'menu_order' , 'post_mime_type' , 'guid' );
$emoji_fields = array ( 'post_title' , 'post_content' , 'post_excerpt' );
foreach ( $emoji_fields as $emoji_field ) {
if ( isset ( $data [ $emoji_field ] ) ) {
$charset = $wpdb -> get_col_charset ( $wpdb -> posts , $emoji_field );
if ( 'utf8' === $charset ) {
$data [ $emoji_field ] = wp_encode_emoji ( $data [ $emoji_field ] );
}
}
}
if ( 'attachment' === $post_type ) {
/**
* Filter attachment post data before it is updated in or added to the database .
*
* @ since 3.9 . 0
*
* @ param array $data An array of sanitized attachment post data .
* @ param array $postarr An array of unsanitized attachment post data .
*/
$data = apply_filters ( 'wp_insert_attachment_data' , $data , $postarr );
} else {
/**
* Filter slashed post data just before it is inserted into the database .
*
* @ since 2.7 . 0
*
* @ param array $data An array of slashed post data .
* @ param array $postarr An array of sanitized , but otherwise unmodified post data .
*/
$data = apply_filters ( 'wp_insert_post_data' , $data , $postarr );
}
$data = wp_unslash ( $data );
$where = array ( 'ID' => $post_ID );
if ( $update ) {
/**
* Fires immediately before an existing post is updated in the database .
*
* @ since 2.5 . 0
*
* @ param int $post_ID Post ID .
* @ param array $data Array of unslashed post data .
*/
do_action ( 'pre_post_update' , $post_ID , $data );
if ( false === $wpdb -> update ( $wpdb -> posts , $data , $where ) ) {
if ( $wp_error ) {
return new WP_Error ( 'db_update_error' , __ ( 'Could not update post in the database' ), $wpdb -> last_error );
} else {
return 0 ;
}
}
} else {
// If there is a suggested ID, use it if not already present.
if ( ! empty ( $import_id ) ) {
$import_id = ( int ) $import_id ;
if ( ! $wpdb -> get_var ( $wpdb -> prepare ( " SELECT ID FROM $wpdb->posts WHERE ID = %d " , $import_id ) ) ) {
$data [ 'ID' ] = $import_id ;
}
}
if ( false === $wpdb -> insert ( $wpdb -> posts , $data ) ) {
if ( $wp_error ) {
return new WP_Error ( 'db_insert_error' , __ ( 'Could not insert post into the database' ), $wpdb -> last_error );
} else {
return 0 ;
}
}
$post_ID = ( int ) $wpdb -> insert_id ;
// Use the newly generated $post_ID.
$where = array ( 'ID' => $post_ID );
}
if ( empty ( $data [ 'post_name' ] ) && ! in_array ( $data [ 'post_status' ], array ( 'draft' , 'pending' , 'auto-draft' ) ) ) {
$data [ 'post_name' ] = wp_unique_post_slug ( sanitize_title ( $data [ 'post_title' ], $post_ID ), $post_ID , $data [ 'post_status' ], $post_type , $post_parent );
$wpdb -> update ( $wpdb -> posts , array ( 'post_name' => $data [ 'post_name' ] ), $where );
clean_post_cache ( $post_ID );
}
if ( is_object_in_taxonomy ( $post_type , 'category' ) ) {
wp_set_post_categories ( $post_ID , $post_category );
}
if ( isset ( $postarr [ 'tags_input' ] ) && is_object_in_taxonomy ( $post_type , 'post_tag' ) ) {
wp_set_post_tags ( $post_ID , $postarr [ 'tags_input' ] );
}
// New-style support for all custom taxonomies.
if ( ! empty ( $postarr [ 'tax_input' ] ) ) {
foreach ( $postarr [ 'tax_input' ] as $taxonomy => $tags ) {
$taxonomy_obj = get_taxonomy ( $taxonomy );
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if ( ! $taxonomy_obj ) {
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/* translators: %s: taxonomy name */
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_doing_it_wrong ( __FUNCTION__ , sprintf ( __ ( 'Invalid taxonomy: %s.' ), $taxonomy ), '4.4.0' );
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continue ;
}
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// array = hierarchical, string = non-hierarchical.
if ( is_array ( $tags ) ) {
$tags = array_filter ( $tags );
}
if ( current_user_can ( $taxonomy_obj -> cap -> assign_terms ) ) {
wp_set_post_terms ( $post_ID , $tags , $taxonomy );
}
}
}
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if ( ! empty ( $postarr [ 'meta_input' ] ) ) {
foreach ( $postarr [ 'meta_input' ] as $field => $value ) {
update_post_meta ( $post_ID , $field , $value );
}
}
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$current_guid = get_post_field ( 'guid' , $post_ID );
// Set GUID.
if ( ! $update && '' == $current_guid ) {
$wpdb -> update ( $wpdb -> posts , array ( 'guid' => get_permalink ( $post_ID ) ), $where );
}
if ( 'attachment' === $postarr [ 'post_type' ] ) {
if ( ! empty ( $postarr [ 'file' ] ) ) {
update_attached_file ( $post_ID , $postarr [ 'file' ] );
}
if ( ! empty ( $postarr [ 'context' ] ) ) {
add_post_meta ( $post_ID , '_wp_attachment_context' , $postarr [ 'context' ], true );
}
}
clean_post_cache ( $post_ID );
$post = get_post ( $post_ID );
if ( ! empty ( $postarr [ 'page_template' ] ) && 'page' == $data [ 'post_type' ] ) {
$post -> page_template = $postarr [ 'page_template' ];
$page_templates = wp_get_theme () -> get_page_templates ( $post );
if ( 'default' != $postarr [ 'page_template' ] && ! isset ( $page_templates [ $postarr [ 'page_template' ] ] ) ) {
if ( $wp_error ) {
return new WP_Error ( 'invalid_page_template' , __ ( 'The page template is invalid.' ));
}
update_post_meta ( $post_ID , '_wp_page_template' , 'default' );
} else {
update_post_meta ( $post_ID , '_wp_page_template' , $postarr [ 'page_template' ] );
}
}
if ( 'attachment' !== $postarr [ 'post_type' ] ) {
wp_transition_post_status ( $data [ 'post_status' ], $previous_status , $post );
} else {
if ( $update ) {
/**
* Fires once an existing attachment has been updated .
*
* @ since 2.0 . 0
*
* @ param int $post_ID Attachment ID .
*/
do_action ( 'edit_attachment' , $post_ID );
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$post_after = get_post ( $post_ID );
/**
* Fires once an existing attachment has been updated .
*
* @ since 4.4 . 0
*
* @ param int $post_ID Post ID .
* @ param WP_Post $post_after Post object following the update .
* @ param WP_Post $post_before Post object before the update .
*/
do_action ( 'attachment_updated' , $post_ID , $post_after , $post_before );
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} else {
/**
* Fires once an attachment has been added .
*
* @ since 2.0 . 0
*
* @ param int $post_ID Attachment ID .
*/
do_action ( 'add_attachment' , $post_ID );
}
return $post_ID ;
}
if ( $update ) {
/**
* Fires once an existing post has been updated .
*
* @ since 1.2 . 0
*
* @ param int $post_ID Post ID .
* @ param WP_Post $post Post object .
*/
do_action ( 'edit_post' , $post_ID , $post );
$post_after = get_post ( $post_ID );
/**
* Fires once an existing post has been updated .
*
* @ since 3.0 . 0
*
* @ param int $post_ID Post ID .
* @ param WP_Post $post_after Post object following the update .
* @ param WP_Post $post_before Post object before the update .
*/
do_action ( 'post_updated' , $post_ID , $post_after , $post_before );
}
/**
* Fires once a post has been saved .
*
* The dynamic portion of the hook name , `$post->post_type` , refers to
* the post type slug .
*
* @ since 3.7 . 0
*
* @ param int $post_ID Post ID .
* @ param WP_Post $post Post object .
* @ param bool $update Whether this is an existing post being updated or not .
*/
do_action ( " save_post_ { $post -> post_type } " , $post_ID , $post , $update );
/**
* Fires once a post has been saved .
*
* @ since 1.5 . 0
*
* @ param int $post_ID Post ID .
* @ param WP_Post $post Post object .
* @ param bool $update Whether this is an existing post being updated or not .
*/
do_action ( 'save_post' , $post_ID , $post , $update );
/**
* Fires once a post has been saved .
*
* @ since 2.0 . 0
*
* @ param int $post_ID Post ID .
* @ param WP_Post $post Post object .
* @ param bool $update Whether this is an existing post being updated or not .
*/
do_action ( 'wp_insert_post' , $post_ID , $post , $update );
return $post_ID ;
}
/**
* Update a post with new post data .
*
* The date does not have to be set for drafts . You can set the date and it will
* not be overridden .
*
* @ since 1.0 . 0
*
* @ param array | object $postarr Optional . Post data . Arrays are expected to be escaped ,
* objects are not . Default array .
* @ param bool $wp_error Optional . Allow return of WP_Error on failure . Default false .
* @ return int | WP_Error The value 0 or WP_Error on failure . The post ID on success .
*/
function wp_update_post ( $postarr = array (), $wp_error = false ) {
if ( is_object ( $postarr ) ) {
// Non-escaped post was passed.
$postarr = get_object_vars ( $postarr );
$postarr = wp_slash ( $postarr );
}
// First, get all of the original fields.
$post = get_post ( $postarr [ 'ID' ], ARRAY_A );
if ( is_null ( $post ) ) {
if ( $wp_error )
return new WP_Error ( 'invalid_post' , __ ( 'Invalid post ID.' ) );
return 0 ;
}
// Escape data pulled from DB.
$post = wp_slash ( $post );
// Passed post category list overwrites existing category list if not empty.
if ( isset ( $postarr [ 'post_category' ]) && is_array ( $postarr [ 'post_category' ])
&& 0 != count ( $postarr [ 'post_category' ]) )
$post_cats = $postarr [ 'post_category' ];
else
$post_cats = $post [ 'post_category' ];
// Drafts shouldn't be assigned a date unless explicitly done so by the user.
if ( isset ( $post [ 'post_status' ] ) && in_array ( $post [ 'post_status' ], array ( 'draft' , 'pending' , 'auto-draft' )) && empty ( $postarr [ 'edit_date' ]) &&
( '0000-00-00 00:00:00' == $post [ 'post_date_gmt' ]) )
$clear_date = true ;
else
$clear_date = false ;
// Merge old and new fields with new fields overwriting old ones.
$postarr = array_merge ( $post , $postarr );
$postarr [ 'post_category' ] = $post_cats ;
if ( $clear_date ) {
$postarr [ 'post_date' ] = current_time ( 'mysql' );
$postarr [ 'post_date_gmt' ] = '' ;
}
if ( $postarr [ 'post_type' ] == 'attachment' )
return wp_insert_attachment ( $postarr );
return wp_insert_post ( $postarr , $wp_error );
}
/**
* Publish a post by transitioning the post status .
*
* @ since 2.1 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param int | WP_Post $post Post ID or post object .
*/
function wp_publish_post ( $post ) {
global $wpdb ;
if ( ! $post = get_post ( $post ) )
return ;
if ( 'publish' == $post -> post_status )
return ;
$wpdb -> update ( $wpdb -> posts , array ( 'post_status' => 'publish' ), array ( 'ID' => $post -> ID ) );
clean_post_cache ( $post -> ID );
$old_status = $post -> post_status ;
$post -> post_status = 'publish' ;
wp_transition_post_status ( 'publish' , $old_status , $post );
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/** This action is documented in wp-includes/post-functions.php */
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do_action ( 'edit_post' , $post -> ID , $post );
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/** This action is documented in wp-includes/post-functions.php */
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do_action ( " save_post_ { $post -> post_type } " , $post -> ID , $post , true );
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/** This action is documented in wp-includes/post-functions.php */
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do_action ( 'save_post' , $post -> ID , $post , true );
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/** This action is documented in wp-includes/post-functions.php */
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do_action ( 'wp_insert_post' , $post -> ID , $post , true );
}
/**
* Publish future post and make sure post ID has future post status .
*
* Invoked by cron 'publish_future_post' event . This safeguard prevents cron
* from publishing drafts , etc .
*
* @ since 2.5 . 0
*
* @ param int | WP_Post $post_id Post ID or post object .
*/
function check_and_publish_future_post ( $post_id ) {
$post = get_post ( $post_id );
if ( empty ( $post ) )
return ;
if ( 'future' != $post -> post_status )
return ;
$time = strtotime ( $post -> post_date_gmt . ' GMT' );
// Uh oh, someone jumped the gun!
if ( $time > time () ) {
wp_clear_scheduled_hook ( 'publish_future_post' , array ( $post_id ) ); // clear anything else in the system
wp_schedule_single_event ( $time , 'publish_future_post' , array ( $post_id ) );
return ;
}
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// wp_publish_post(_ returns no meaningful value.
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wp_publish_post ( $post_id );
}
/**
* Computes a unique slug for the post , when given the desired slug and some post details .
*
* @ since 2.8 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
* @ global WP_Rewrite $wp_rewrite
*
* @ param string $slug The desired slug ( post_name ) .
* @ param int $post_ID Post ID .
* @ param string $post_status No uniqueness checks are made if the post is still draft or pending .
* @ param string $post_type Post type .
* @ param int $post_parent Post parent ID .
* @ return string Unique slug for the post , based on $post_name ( with a - 1 , - 2 , etc . suffix )
*/
function wp_unique_post_slug ( $slug , $post_ID , $post_status , $post_type , $post_parent ) {
if ( in_array ( $post_status , array ( 'draft' , 'pending' , 'auto-draft' ) ) || ( 'inherit' == $post_status && 'revision' == $post_type ) )
return $slug ;
global $wpdb , $wp_rewrite ;
$original_slug = $slug ;
$feeds = $wp_rewrite -> feeds ;
if ( ! is_array ( $feeds ) )
$feeds = array ();
if ( 'attachment' == $post_type ) {
// Attachment slugs must be unique across all types.
$check_sql = " SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND ID != %d LIMIT 1 " ;
$post_name_check = $wpdb -> get_var ( $wpdb -> prepare ( $check_sql , $slug , $post_ID ) );
/**
* Filter whether the post slug would make a bad attachment slug .
*
* @ since 3.1 . 0
*
* @ param bool $bad_slug Whether the slug would be bad as an attachment slug .
* @ param string $slug The post slug .
*/
if ( $post_name_check || in_array ( $slug , $feeds ) || apply_filters ( 'wp_unique_post_slug_is_bad_attachment_slug' , false , $slug ) ) {
$suffix = 2 ;
do {
$alt_post_name = _truncate_post_slug ( $slug , 200 - ( strlen ( $suffix ) + 1 ) ) . " - $suffix " ;
$post_name_check = $wpdb -> get_var ( $wpdb -> prepare ( $check_sql , $alt_post_name , $post_ID ) );
$suffix ++ ;
} while ( $post_name_check );
$slug = $alt_post_name ;
}
} elseif ( is_post_type_hierarchical ( $post_type ) ) {
if ( 'nav_menu_item' == $post_type )
return $slug ;
/*
* Page slugs must be unique within their own trees . Pages are in a separate
* namespace than posts so page slugs are allowed to overlap post slugs .
*/
$check_sql = " SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type IN ( %s, 'attachment' ) AND ID != %d AND post_parent = %d LIMIT 1 " ;
$post_name_check = $wpdb -> get_var ( $wpdb -> prepare ( $check_sql , $slug , $post_type , $post_ID , $post_parent ) );
/**
* Filter whether the post slug would make a bad hierarchical post slug .
*
* @ since 3.1 . 0
*
* @ param bool $bad_slug Whether the post slug would be bad in a hierarchical post context .
* @ param string $slug The post slug .
* @ param string $post_type Post type .
* @ param int $post_parent Post parent ID .
*/
if ( $post_name_check || in_array ( $slug , $feeds ) || preg_match ( " @^( $wp_rewrite->pagination_base )? \ d+ $ @ " , $slug ) || apply_filters ( 'wp_unique_post_slug_is_bad_hierarchical_slug' , false , $slug , $post_type , $post_parent ) ) {
$suffix = 2 ;
do {
$alt_post_name = _truncate_post_slug ( $slug , 200 - ( strlen ( $suffix ) + 1 ) ) . " - $suffix " ;
$post_name_check = $wpdb -> get_var ( $wpdb -> prepare ( $check_sql , $alt_post_name , $post_type , $post_ID , $post_parent ) );
$suffix ++ ;
} while ( $post_name_check );
$slug = $alt_post_name ;
}
} else {
// Post slugs must be unique across all posts.
$check_sql = " SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND ID != %d LIMIT 1 " ;
$post_name_check = $wpdb -> get_var ( $wpdb -> prepare ( $check_sql , $slug , $post_type , $post_ID ) );
// Prevent new post slugs that could result in URLs that conflict with date archives.
$post = get_post ( $post_ID );
$conflicts_with_date_archive = false ;
if ( 'post' === $post_type && ( ! $post || $post -> post_name !== $slug ) && preg_match ( '/^[0-9]+$/' , $slug ) && $slug_num = intval ( $slug ) ) {
$permastructs = array_values ( array_filter ( explode ( '/' , get_option ( 'permalink_structure' ) ) ) );
$postname_index = array_search ( '%postname%' , $permastructs );
/*
* Potential date clashes are as follows :
*
* - Any integer in the first permastruct position could be a year .
* - An integer between 1 and 12 that follows 'year' conflicts with 'monthnum' .
* - An integer between 1 and 31 that follows 'monthnum' conflicts with 'day' .
*/
if ( 0 === $postname_index ||
( $postname_index && '%year%' === $permastructs [ $postname_index - 1 ] && 13 > $slug_num ) ||
( $postname_index && '%monthnum%' === $permastructs [ $postname_index - 1 ] && 32 > $slug_num )
) {
$conflicts_with_date_archive = true ;
}
}
/**
* Filter whether the post slug would be bad as a flat slug .
*
* @ since 3.1 . 0
*
* @ param bool $bad_slug Whether the post slug would be bad as a flat slug .
* @ param string $slug The post slug .
* @ param string $post_type Post type .
*/
if ( $post_name_check || in_array ( $slug , $feeds ) || $conflicts_with_date_archive || apply_filters ( 'wp_unique_post_slug_is_bad_flat_slug' , false , $slug , $post_type ) ) {
$suffix = 2 ;
do {
$alt_post_name = _truncate_post_slug ( $slug , 200 - ( strlen ( $suffix ) + 1 ) ) . " - $suffix " ;
$post_name_check = $wpdb -> get_var ( $wpdb -> prepare ( $check_sql , $alt_post_name , $post_type , $post_ID ) );
$suffix ++ ;
} while ( $post_name_check );
$slug = $alt_post_name ;
}
}
/**
* Filter the unique post slug .
*
* @ since 3.3 . 0
*
* @ param string $slug The post slug .
* @ param int $post_ID Post ID .
* @ param string $post_status The post status .
* @ param string $post_type Post type .
* @ param int $post_parent Post parent ID
* @ param string $original_slug The original post slug .
*/
return apply_filters ( 'wp_unique_post_slug' , $slug , $post_ID , $post_status , $post_type , $post_parent , $original_slug );
}
/**
* Truncate a post slug .
*
* @ since 3.6 . 0
* @ access private
*
* @ see utf8_uri_encode ()
*
* @ param string $slug The slug to truncate .
* @ param int $length Optional . Max length of the slug . Default 200 ( characters ) .
* @ return string The truncated slug .
*/
function _truncate_post_slug ( $slug , $length = 200 ) {
if ( strlen ( $slug ) > $length ) {
$decoded_slug = urldecode ( $slug );
if ( $decoded_slug === $slug )
$slug = substr ( $slug , 0 , $length );
else
$slug = utf8_uri_encode ( $decoded_slug , $length );
}
return rtrim ( $slug , '-' );
}
/**
* Add tags to a post .
*
* @ see wp_set_post_tags ()
*
* @ since 2.3 . 0
*
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* @ param int $post_id Optional . The Post ID . Does not default to the ID of the global $post .
* @ param string | array $tags Optional . An array of tags to set for the post , or a string of tags
* separated by commas . Default empty .
* @ return array | false | WP_Error Array of affected term IDs . WP_Error or false on failure .
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*/
function wp_add_post_tags ( $post_id = 0 , $tags = '' ) {
return wp_set_post_tags ( $post_id , $tags , true );
}
/**
* Set the tags for a post .
*
* @ since 2.3 . 0
*
* @ see wp_set_object_terms ()
*
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* @ param int $post_id Optional . The Post ID . Does not default to the ID of the global $post .
* @ param string | array $tags Optional . An array of tags to set for the post , or a string of tags
* separated by commas . Default empty .
* @ param bool $append Optional . If true , don ' t delete existing tags , just add on . If false ,
* replace the tags with the new tags . Default false .
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* @ return array | false | WP_Error Array of affected term IDs . WP_Error or false on failure .
*/
function wp_set_post_tags ( $post_id = 0 , $tags = '' , $append = false ) {
return wp_set_post_terms ( $post_id , $tags , 'post_tag' , $append );
}
/**
* Set the terms for a post .
*
* @ since 2.8 . 0
*
* @ see wp_set_object_terms ()
*
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* @ param int $post_id Optional . The Post ID . Does not default to the ID of the global $post .
* @ param string | array $tags Optional . An array of terms to set for the post , or a string of terms
* separated by commas . Default empty .
* @ param string $taxonomy Optional . Taxonomy name . Default 'post_tag' .
* @ param bool $append Optional . If true , don ' t delete existing terms , just add on . If false ,
* replace the terms with the new terms . Default false .
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* @ return array | false | WP_Error Array of affected term IDs . WP_Error or false on failure .
*/
function wp_set_post_terms ( $post_id = 0 , $tags = '' , $taxonomy = 'post_tag' , $append = false ) {
$post_id = ( int ) $post_id ;
if ( ! $post_id )
return false ;
if ( empty ( $tags ) )
$tags = array ();
if ( ! is_array ( $tags ) ) {
$comma = _x ( ',' , 'tag delimiter' );
if ( ',' !== $comma )
$tags = str_replace ( $comma , ',' , $tags );
$tags = explode ( ',' , trim ( $tags , " \n \t \r \0 \x0B , " ) );
}
/*
* Hierarchical taxonomies must always pass IDs rather than names so that
* children with the same names but different parents aren ' t confused .
*/
if ( is_taxonomy_hierarchical ( $taxonomy ) ) {
$tags = array_unique ( array_map ( 'intval' , $tags ) );
}
return wp_set_object_terms ( $post_id , $tags , $taxonomy , $append );
}
/**
* Set categories for a post .
*
* If the post categories parameter is not set , then the default category is
* going used .
*
* @ since 2.1 . 0
*
* @ param int $post_ID Optional . The Post ID . Does not default to the ID
* of the global $post . Default 0.
* @ param array | int $post_categories Optional . List of categories or ID of category .
* Default empty array .
* @ param bool $append If true , don ' t delete existing categories , just add on .
* If false , replace the categories with the new categories .
* @ return array | bool | WP_Error
*/
function wp_set_post_categories ( $post_ID = 0 , $post_categories = array (), $append = false ) {
$post_ID = ( int ) $post_ID ;
$post_type = get_post_type ( $post_ID );
$post_status = get_post_status ( $post_ID );
// If $post_categories isn't already an array, make it one:
$post_categories = ( array ) $post_categories ;
if ( empty ( $post_categories ) ) {
if ( 'post' == $post_type && 'auto-draft' != $post_status ) {
$post_categories = array ( get_option ( 'default_category' ) );
$append = false ;
} else {
$post_categories = array ();
}
} elseif ( 1 == count ( $post_categories ) && '' == reset ( $post_categories ) ) {
return true ;
}
return wp_set_post_terms ( $post_ID , $post_categories , 'category' , $append );
}
/**
* Fires actions related to the transitioning of a post ' s status .
*
* When a post is saved , the post status is " transitioned " from one status to another ,
* though this does not always mean the status has actually changed before and after
* the save . This function fires a number of action hooks related to that transition :
* the generic 'transition_post_status' action , as well as the dynamic hooks
* `"{$old_status}_to_{$new_status}"` and `"{$new_status}_{$post->post_type}"` . Note
* that the function does not transition the post object in the database .
*
* For instance : When publishing a post for the first time , the post status may transition
* from 'draft' – or some other status – to 'publish' . However , if a post is already
* published and is simply being updated , the " old " and " new " statuses may both be 'publish'
* before and after the transition .
*
* @ since 2.3 . 0
*
* @ param string $new_status Transition to this post status .
* @ param string $old_status Previous post status .
* @ param WP_Post $post Post data .
*/
function wp_transition_post_status ( $new_status , $old_status , $post ) {
/**
* Fires when a post is transitioned from one status to another .
*
* @ since 2.3 . 0
*
* @ param string $new_status New post status .
* @ param string $old_status Old post status .
* @ param WP_Post $post Post object .
*/
do_action ( 'transition_post_status' , $new_status , $old_status , $post );
/**
* Fires when a post is transitioned from one status to another .
*
* The dynamic portions of the hook name , `$new_status` and `$old status` ,
* refer to the old and new post statuses , respectively .
*
* @ since 2.3 . 0
*
* @ param WP_Post $post Post object .
*/
do_action ( " { $old_status } _to_ { $new_status } " , $post );
/**
* Fires when a post is transitioned from one status to another .
*
* The dynamic portions of the hook name , `$new_status` and `$post->post_type` ,
* refer to the new post status and post type , respectively .
*
* Please note : When this action is hooked using a particular post status ( like
* 'publish' , as `publish_{$post->post_type}` ), it will fire both when a post is
* first transitioned to that status from something else , as well as upon
* subsequent post updates ( old and new status are both the same ) .
*
* Therefore , if you are looking to only fire a callback when a post is first
* transitioned to a status , use the { @ see 'transition_post_status' } hook instead .
*
* @ since 2.3 . 0
*
* @ param int $post_id Post ID .
* @ param WP_Post $post Post object .
*/
do_action ( " { $new_status } _ { $post -> post_type } " , $post -> ID , $post );
}
//
// Comment, trackback, and pingback functions.
//
/**
* Add a URL to those already pinged .
*
* @ since 1.5 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param int $post_id Post ID .
* @ param string $uri Ping URI .
* @ return int | false How many rows were updated .
*/
function add_ping ( $post_id , $uri ) {
global $wpdb ;
$pung = $wpdb -> get_var ( $wpdb -> prepare ( " SELECT pinged FROM $wpdb->posts WHERE ID = %d " , $post_id ));
$pung = trim ( $pung );
$pung = preg_split ( '/\s/' , $pung );
$pung [] = $uri ;
$new = implode ( " \n " , $pung );
/**
* Filter the new ping URL to add for the given post .
*
* @ since 2.0 . 0
*
* @ param string $new New ping URL to add .
*/
$new = apply_filters ( 'add_ping' , $new );
// expected_slashed ($new).
$new = wp_unslash ( $new );
return $wpdb -> update ( $wpdb -> posts , array ( 'pinged' => $new ), array ( 'ID' => $post_id ) );
}
/**
* Retrieve enclosures already enclosed for a post .
*
* @ since 1.5 . 0
*
* @ param int $post_id Post ID .
* @ return array List of enclosures .
*/
function get_enclosed ( $post_id ) {
$custom_fields = get_post_custom ( $post_id );
$pung = array ();
if ( ! is_array ( $custom_fields ) )
return $pung ;
foreach ( $custom_fields as $key => $val ) {
if ( 'enclosure' != $key || ! is_array ( $val ) )
continue ;
foreach ( $val as $enc ) {
$enclosure = explode ( " \n " , $enc );
$pung [] = trim ( $enclosure [ 0 ] );
}
}
/**
* Filter the list of enclosures already enclosed for the given post .
*
* @ since 2.0 . 0
*
* @ param array $pung Array of enclosures for the given post .
* @ param int $post_id Post ID .
*/
return apply_filters ( 'get_enclosed' , $pung , $post_id );
}
/**
* Retrieve URLs already pinged for a post .
*
* @ since 1.5 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param int $post_id Post ID .
* @ return array
*/
function get_pung ( $post_id ) {
global $wpdb ;
$pung = $wpdb -> get_var ( $wpdb -> prepare ( " SELECT pinged FROM $wpdb->posts WHERE ID = %d " , $post_id ));
$pung = trim ( $pung );
$pung = preg_split ( '/\s/' , $pung );
/**
* Filter the list of already - pinged URLs for the given post .
*
* @ since 2.0 . 0
*
* @ param array $pung Array of URLs already pinged for the given post .
*/
return apply_filters ( 'get_pung' , $pung );
}
/**
* Retrieve URLs that need to be pinged .
*
* @ since 1.5 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param int $post_id Post ID
* @ return array
*/
function get_to_ping ( $post_id ) {
global $wpdb ;
$to_ping = $wpdb -> get_var ( $wpdb -> prepare ( " SELECT to_ping FROM $wpdb->posts WHERE ID = %d " , $post_id ));
$to_ping = sanitize_trackback_urls ( $to_ping );
$to_ping = preg_split ( '/\s/' , $to_ping , - 1 , PREG_SPLIT_NO_EMPTY );
/**
* Filter the list of URLs yet to ping for the given post .
*
* @ since 2.0 . 0
*
* @ param array $to_ping List of URLs yet to ping .
*/
return apply_filters ( 'get_to_ping' , $to_ping );
}
/**
* Do trackbacks for a list of URLs .
*
* @ since 1.0 . 0
*
* @ param string $tb_list Comma separated list of URLs .
* @ param int $post_id Post ID .
*/
function trackback_url_list ( $tb_list , $post_id ) {
if ( ! empty ( $tb_list ) ) {
// Get post data.
$postdata = get_post ( $post_id , ARRAY_A );
// Form an excerpt.
$excerpt = strip_tags ( $postdata [ 'post_excerpt' ] ? $postdata [ 'post_excerpt' ] : $postdata [ 'post_content' ] );
if ( strlen ( $excerpt ) > 255 ) {
$excerpt = substr ( $excerpt , 0 , 252 ) . '…' ;
}
$trackback_urls = explode ( ',' , $tb_list );
foreach ( ( array ) $trackback_urls as $tb_url ) {
$tb_url = trim ( $tb_url );
trackback ( $tb_url , wp_unslash ( $postdata [ 'post_title' ] ), $excerpt , $post_id );
}
}
}
//
// Page functions
//
/**
* Get a list of page IDs .
*
* @ since 2.0 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ return array List of page IDs .
*/
function get_all_page_ids () {
global $wpdb ;
$page_ids = wp_cache_get ( 'all_page_ids' , 'posts' );
if ( ! is_array ( $page_ids ) ) {
$page_ids = $wpdb -> get_col ( " SELECT ID FROM $wpdb->posts WHERE post_type = 'page' " );
wp_cache_add ( 'all_page_ids' , $page_ids , 'posts' );
}
return $page_ids ;
}
/**
* Retrieves page data given a page ID or page object .
*
* Use get_post () instead of get_page () .
*
* @ since 1.5 . 1
* @ deprecated 3.5 . 0 Use get_post ()
*
* @ param mixed $page Page object or page ID . Passed by reference .
* @ param string $output Optional . What to output . Accepts OBJECT , ARRAY_A , or ARRAY_N .
* Default OBJECT .
* @ param string $filter Optional . How the return value should be filtered . Accepts 'raw' ,
* 'edit' , 'db' , 'display' . Default 'raw' .
* @ return WP_Post | array | null WP_Post on success or null on failure .
*/
function get_page ( $page , $output = OBJECT , $filter = 'raw' ) {
return get_post ( $page , $output , $filter );
}
/**
* Retrieves a page given its path .
*
* @ since 2.1 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param string $page_path Page path .
* @ param string $output Optional . Output type . Accepts OBJECT , ARRAY_N , or ARRAY_A .
* Default OBJECT .
* @ param string | array $post_type Optional . Post type or array of post types . Default 'page' .
* @ return WP_Post | array | void WP_Post on success .
*/
function get_page_by_path ( $page_path , $output = OBJECT , $post_type = 'page' ) {
global $wpdb ;
$page_path = rawurlencode ( urldecode ( $page_path ));
$page_path = str_replace ( '%2F' , '/' , $page_path );
$page_path = str_replace ( '%20' , ' ' , $page_path );
$parts = explode ( '/' , trim ( $page_path , '/' ) );
$parts = esc_sql ( $parts );
$parts = array_map ( 'sanitize_title_for_query' , $parts );
$in_string = " ' " . implode ( " ',' " , $parts ) . " ' " ;
if ( is_array ( $post_type ) ) {
$post_types = $post_type ;
} else {
$post_types = array ( $post_type , 'attachment' );
}
$post_types = esc_sql ( $post_types );
$post_type_in_string = " ' " . implode ( " ',' " , $post_types ) . " ' " ;
$sql = "
SELECT ID , post_name , post_parent , post_type
FROM $wpdb -> posts
WHERE post_name IN ( $in_string )
AND post_type IN ( $post_type_in_string )
" ;
$pages = $wpdb -> get_results ( $sql , OBJECT_K );
$revparts = array_reverse ( $parts );
$foundid = 0 ;
foreach ( ( array ) $pages as $page ) {
if ( $page -> post_name == $revparts [ 0 ] ) {
$count = 0 ;
$p = $page ;
while ( $p -> post_parent != 0 && isset ( $pages [ $p -> post_parent ] ) ) {
$count ++ ;
$parent = $pages [ $p -> post_parent ];
if ( ! isset ( $revparts [ $count ] ) || $parent -> post_name != $revparts [ $count ] )
break ;
$p = $parent ;
}
if ( $p -> post_parent == 0 && $count + 1 == count ( $revparts ) && $p -> post_name == $revparts [ $count ] ) {
$foundid = $page -> ID ;
if ( $page -> post_type == $post_type )
break ;
}
}
}
if ( $foundid ) {
return get_post ( $foundid , $output );
}
}
/**
* Retrieve a page given its title .
*
* @ since 2.1 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param string $page_title Page title
* @ param string $output Optional . Output type . OBJECT , ARRAY_N , or ARRAY_A .
* Default OBJECT .
* @ param string | array $post_type Optional . Post type or array of post types . Default 'page' .
* @ return WP_Post | array | void WP_Post on success or null on failure
*/
function get_page_by_title ( $page_title , $output = OBJECT , $post_type = 'page' ) {
global $wpdb ;
if ( is_array ( $post_type ) ) {
$post_type = esc_sql ( $post_type );
$post_type_in_string = " ' " . implode ( " ',' " , $post_type ) . " ' " ;
$sql = $wpdb -> prepare ( "
SELECT ID
FROM $wpdb -> posts
WHERE post_title = % s
AND post_type IN ( $post_type_in_string )
" , $page_title );
} else {
$sql = $wpdb -> prepare ( "
SELECT ID
FROM $wpdb -> posts
WHERE post_title = % s
AND post_type = % s
" , $page_title , $post_type );
}
$page = $wpdb -> get_var ( $sql );
if ( $page ) {
return get_post ( $page , $output );
}
}
/**
* Identify descendants of a given page ID in a list of page objects .
*
* Descendants are identified from the `$pages` array passed to the function . No database queries are performed .
*
* @ since 1.5 . 1
*
* @ param int $page_id Page ID .
* @ param array $pages List of page objects from which descendants should be identified .
* @ return array List of page children .
*/
function get_page_children ( $page_id , $pages ) {
// Build a hash of ID -> children.
$children = array ();
foreach ( ( array ) $pages as $page ) {
$children [ intval ( $page -> post_parent ) ][] = $page ;
}
$page_list = array ();
// Start the search by looking at immediate children.
if ( isset ( $children [ $page_id ] ) ) {
// Always start at the end of the stack in order to preserve original `$pages` order.
$to_look = array_reverse ( $children [ $page_id ] );
while ( $to_look ) {
$p = array_pop ( $to_look );
$page_list [] = $p ;
if ( isset ( $children [ $p -> ID ] ) ) {
foreach ( array_reverse ( $children [ $p -> ID ] ) as $child ) {
// Append to the `$to_look` stack to descend the tree.
$to_look [] = $child ;
}
}
}
}
return $page_list ;
}
/**
* Order the pages with children under parents in a flat list .
*
* It uses auxiliary structure to hold parent - children relationships and
* runs in O ( N ) complexity
*
* @ since 2.0 . 0
*
* @ param array $pages Posts array , passed by reference .
* @ param int $page_id Optional . Parent page ID . Default 0.
* @ return array A list arranged by hierarchy . Children immediately follow their parents .
*/
function get_page_hierarchy ( & $pages , $page_id = 0 ) {
if ( empty ( $pages ) ) {
return array ();
}
$children = array ();
foreach ( ( array ) $pages as $p ) {
$parent_id = intval ( $p -> post_parent );
$children [ $parent_id ][] = $p ;
}
$result = array ();
_page_traverse_name ( $page_id , $children , $result );
return $result ;
}
/**
* Traverse and return all the nested children post names of a root page .
*
* $children contains parent - children relations
*
* @ since 2.9 . 0
*
* @ see _page_traverse_name ()
*
* @ param int $page_id Page ID .
* @ param array & $children Parent - children relations , passed by reference .
* @ param array & $result Result , passed by reference .
*/
function _page_traverse_name ( $page_id , & $children , & $result ){
if ( isset ( $children [ $page_id ] ) ){
foreach ( ( array ) $children [ $page_id ] as $child ) {
$result [ $child -> ID ] = $child -> post_name ;
_page_traverse_name ( $child -> ID , $children , $result );
}
}
}
/**
* Build URI for a page .
*
* Sub pages will be in the " directory " under the parent page post name .
*
* @ since 1.5 . 0
*
* @ param WP_Post | object | int $page Page object or page ID .
* @ return string | false Page URI , false on error .
*/
function get_page_uri ( $page ) {
$page = get_post ( $page );
if ( ! $page )
return false ;
$uri = $page -> post_name ;
foreach ( $page -> ancestors as $parent ) {
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$parent = get_post ( $parent );
if ( 'publish' === $parent -> post_status ) {
$uri = $parent -> post_name . '/' . $uri ;
}
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}
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/**
* Filter the URI for a page .
*
* @ since 4.4 . 0
*
* @ param string $uri Page URI .
* @ param WP_Post $page Page object .
*/
return apply_filters ( 'get_page_uri' , $uri , $page );
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}
/**
* Retrieve a list of pages .
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ since 1.5 . 0
*
* @ param array | string $args {
* Optional . Array or string of arguments to retrieve pages .
*
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* @ type int $child_of Page ID to return child and grandchild pages of . Note : The value
* of `$hierarchical` has no bearing on whether `$child_of` returns
* hierarchical results . Default 0 , or no restriction .
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* @ type string $sort_order How to sort retrieved pages . Accepts 'ASC' , 'DESC' . Default 'ASC' .
* @ type string $sort_column What columns to sort pages by , comma - separated . Accepts 'post_author' ,
* 'post_date' , 'post_title' , 'post_name' , 'post_modified' , 'menu_order' ,
* 'post_modified_gmt' , 'post_parent' , 'ID' , 'rand' , 'comment_count' .
* 'post_' can be omitted for any values that start with it .
* Default 'post_title' .
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* @ type bool $hierarchical Whether to return pages hierarchically . If false in conjunction with
* `$child_of` also being false , both arguments will be disregarded .
* Default true .
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* @ type array $exclude Array of page IDs to exclude . Default empty array .
* @ type array $include Array of page IDs to include . Cannot be used with `$child_of` ,
* `$parent` , `$exclude` , `$meta_key` , `$meta_value` , or `$hierarchical` .
* Default empty array .
* @ type string $meta_key Only include pages with this meta key . Default empty .
* @ type string $meta_value Only include pages with this meta value . Requires `$meta_key` .
* Default empty .
* @ type string $authors A comma - separated list of author IDs . Default empty .
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* @ type int $parent Page ID to return direct children of . Default - 1 , or no restriction .
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* @ type string | array $exclude_tree Comma - separated string or array of page IDs to exclude .
* Default empty array .
* @ type int $number The number of pages to return . Default 0 , or all pages .
* @ type int $offset The number of pages to skip before returning . Requires `$number` .
* Default 0.
* @ type string $post_type The post type to query . Default 'page' .
* @ type string $post_status A comma - separated list of post status types to include .
* Default 'publish' .
* }
* @ return array | false List of pages matching defaults or `$args` .
*/
function get_pages ( $args = array () ) {
global $wpdb ;
$defaults = array (
'child_of' => 0 , 'sort_order' => 'ASC' ,
'sort_column' => 'post_title' , 'hierarchical' => 1 ,
'exclude' => array (), 'include' => array (),
'meta_key' => '' , 'meta_value' => '' ,
'authors' => '' , 'parent' => - 1 , 'exclude_tree' => array (),
'number' => '' , 'offset' => 0 ,
'post_type' => 'page' , 'post_status' => 'publish' ,
);
$r = wp_parse_args ( $args , $defaults );
$number = ( int ) $r [ 'number' ];
$offset = ( int ) $r [ 'offset' ];
$child_of = ( int ) $r [ 'child_of' ];
$hierarchical = $r [ 'hierarchical' ];
$exclude = $r [ 'exclude' ];
$meta_key = $r [ 'meta_key' ];
$meta_value = $r [ 'meta_value' ];
$parent = $r [ 'parent' ];
$post_status = $r [ 'post_status' ];
// Make sure the post type is hierarchical.
$hierarchical_post_types = get_post_types ( array ( 'hierarchical' => true ) );
if ( ! in_array ( $r [ 'post_type' ], $hierarchical_post_types ) ) {
return false ;
}
if ( $parent > 0 && ! $child_of ) {
$hierarchical = false ;
}
// Make sure we have a valid post status.
if ( ! is_array ( $post_status ) ) {
$post_status = explode ( ',' , $post_status );
}
if ( array_diff ( $post_status , get_post_stati () ) ) {
return false ;
}
// $args can be whatever, only use the args defined in defaults to compute the key.
$key = md5 ( serialize ( wp_array_slice_assoc ( $r , array_keys ( $defaults ) ) ) );
$last_changed = wp_cache_get ( 'last_changed' , 'posts' );
if ( ! $last_changed ) {
$last_changed = microtime ();
wp_cache_set ( 'last_changed' , $last_changed , 'posts' );
}
$cache_key = " get_pages: $key : $last_changed " ;
if ( $cache = wp_cache_get ( $cache_key , 'posts' ) ) {
// Convert to WP_Post instances.
$pages = array_map ( 'get_post' , $cache );
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/** This filter is documented in wp-includes/post-functions.php */
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$pages = apply_filters ( 'get_pages' , $pages , $r );
return $pages ;
}
$inclusions = '' ;
if ( ! empty ( $r [ 'include' ] ) ) {
$child_of = 0 ; //ignore child_of, parent, exclude, meta_key, and meta_value params if using include
$parent = - 1 ;
$exclude = '' ;
$meta_key = '' ;
$meta_value = '' ;
$hierarchical = false ;
$incpages = wp_parse_id_list ( $r [ 'include' ] );
if ( ! empty ( $incpages ) ) {
$inclusions = ' AND ID IN (' . implode ( ',' , $incpages ) . ')' ;
}
}
$exclusions = '' ;
if ( ! empty ( $exclude ) ) {
$expages = wp_parse_id_list ( $exclude );
if ( ! empty ( $expages ) ) {
$exclusions = ' AND ID NOT IN (' . implode ( ',' , $expages ) . ')' ;
}
}
$author_query = '' ;
if ( ! empty ( $r [ 'authors' ] ) ) {
$post_authors = preg_split ( '/[\s,]+/' , $r [ 'authors' ] );
if ( ! empty ( $post_authors ) ) {
foreach ( $post_authors as $post_author ) {
//Do we have an author id or an author login?
if ( 0 == intval ( $post_author ) ) {
$post_author = get_user_by ( 'login' , $post_author );
if ( empty ( $post_author ) ) {
continue ;
}
if ( empty ( $post_author -> ID ) ) {
continue ;
}
$post_author = $post_author -> ID ;
}
if ( '' == $author_query ) {
$author_query = $wpdb -> prepare ( ' post_author = %d ' , $post_author );
} else {
$author_query .= $wpdb -> prepare ( ' OR post_author = %d ' , $post_author );
}
}
if ( '' != $author_query ) {
$author_query = " AND ( $author_query ) " ;
}
}
}
$join = '' ;
$where = " $exclusions $inclusions " ;
if ( '' !== $meta_key || '' !== $meta_value ) {
$join = " LEFT JOIN $wpdb->postmeta ON ( $wpdb->posts .ID = $wpdb->postmeta .post_id ) " ;
// meta_key and meta_value might be slashed
$meta_key = wp_unslash ( $meta_key );
$meta_value = wp_unslash ( $meta_value );
if ( '' !== $meta_key ) {
$where .= $wpdb -> prepare ( " AND $wpdb->postmeta .meta_key = %s " , $meta_key );
}
if ( '' !== $meta_value ) {
$where .= $wpdb -> prepare ( " AND $wpdb->postmeta .meta_value = %s " , $meta_value );
}
}
if ( is_array ( $parent ) ) {
$post_parent__in = implode ( ',' , array_map ( 'absint' , ( array ) $parent ) );
if ( ! empty ( $post_parent__in ) ) {
$where .= " AND post_parent IN ( $post_parent__in ) " ;
}
} elseif ( $parent >= 0 ) {
$where .= $wpdb -> prepare ( ' AND post_parent = %d ' , $parent );
}
if ( 1 == count ( $post_status ) ) {
$where_post_type = $wpdb -> prepare ( " post_type = %s AND post_status = %s " , $r [ 'post_type' ], reset ( $post_status ) );
} else {
$post_status = implode ( " ', ' " , $post_status );
$where_post_type = $wpdb -> prepare ( " post_type = %s AND post_status IN (' $post_status ') " , $r [ 'post_type' ] );
}
$orderby_array = array ();
$allowed_keys = array ( 'author' , 'post_author' , 'date' , 'post_date' , 'title' , 'post_title' , 'name' , 'post_name' , 'modified' ,
'post_modified' , 'modified_gmt' , 'post_modified_gmt' , 'menu_order' , 'parent' , 'post_parent' ,
'ID' , 'rand' , 'comment_count' );
foreach ( explode ( ',' , $r [ 'sort_column' ] ) as $orderby ) {
$orderby = trim ( $orderby );
if ( ! in_array ( $orderby , $allowed_keys ) ) {
continue ;
}
switch ( $orderby ) {
case 'menu_order' :
break ;
case 'ID' :
$orderby = " $wpdb->posts .ID " ;
break ;
case 'rand' :
$orderby = 'RAND()' ;
break ;
case 'comment_count' :
$orderby = " $wpdb->posts .comment_count " ;
break ;
default :
if ( 0 === strpos ( $orderby , 'post_' ) ) {
$orderby = " $wpdb->posts . " . $orderby ;
} else {
$orderby = " $wpdb->posts .post_ " . $orderby ;
}
}
$orderby_array [] = $orderby ;
}
$sort_column = ! empty ( $orderby_array ) ? implode ( ',' , $orderby_array ) : " $wpdb->posts .post_title " ;
$sort_order = strtoupper ( $r [ 'sort_order' ] );
if ( '' !== $sort_order && ! in_array ( $sort_order , array ( 'ASC' , 'DESC' ) ) ) {
$sort_order = 'ASC' ;
}
$query = " SELECT * FROM $wpdb->posts $join WHERE ( $where_post_type ) $where " ;
$query .= $author_query ;
$query .= " ORDER BY " . $sort_column . " " . $sort_order ;
if ( ! empty ( $number ) ) {
$query .= ' LIMIT ' . $offset . ',' . $number ;
}
$pages = $wpdb -> get_results ( $query );
if ( empty ( $pages ) ) {
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/** This filter is documented in wp-includes/post-functions.php */
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$pages = apply_filters ( 'get_pages' , array (), $r );
return $pages ;
}
// Sanitize before caching so it'll only get done once.
$num_pages = count ( $pages );
for ( $i = 0 ; $i < $num_pages ; $i ++ ) {
$pages [ $i ] = sanitize_post ( $pages [ $i ], 'raw' );
}
// Update cache.
update_post_cache ( $pages );
if ( $child_of || $hierarchical ) {
$pages = get_page_children ( $child_of , $pages );
}
if ( ! empty ( $r [ 'exclude_tree' ] ) ) {
$exclude = wp_parse_id_list ( $r [ 'exclude_tree' ] );
foreach ( $exclude as $id ) {
$children = get_page_children ( $id , $pages );
foreach ( $children as $child ) {
$exclude [] = $child -> ID ;
}
}
$num_pages = count ( $pages );
for ( $i = 0 ; $i < $num_pages ; $i ++ ) {
if ( in_array ( $pages [ $i ] -> ID , $exclude ) ) {
unset ( $pages [ $i ] );
}
}
}
$page_structure = array ();
foreach ( $pages as $page ) {
$page_structure [] = $page -> ID ;
}
wp_cache_set ( $cache_key , $page_structure , 'posts' );
// Convert to WP_Post instances
$pages = array_map ( 'get_post' , $pages );
/**
* Filter the retrieved list of pages .
*
* @ since 2.1 . 0
*
* @ param array $pages List of pages to retrieve .
* @ param array $r Array of get_pages () arguments .
*/
return apply_filters ( 'get_pages' , $pages , $r );
}
//
// Attachment functions
//
/**
* Check if the attachment URI is local one and is really an attachment .
*
* @ since 2.0 . 0
*
* @ param string $url URL to check
* @ return bool True on success , false on failure .
*/
function is_local_attachment ( $url ) {
if ( strpos ( $url , home_url ()) === false )
return false ;
if ( strpos ( $url , home_url ( '/?attachment_id=' )) !== false )
return true ;
if ( $id = url_to_postid ( $url ) ) {
$post = get_post ( $id );
if ( 'attachment' == $post -> post_type )
return true ;
}
return false ;
}
/**
* Insert an attachment .
*
* If you set the 'ID' in the $args parameter , it will mean that you are
* updating and attempt to update the attachment . You can also set the
* attachment name or title by setting the key 'post_name' or 'post_title' .
*
* You can set the dates for the attachment manually by setting the 'post_date'
* and 'post_date_gmt' keys ' values .
*
* By default , the comments will use the default settings for whether the
* comments are allowed . You can close them manually or keep them open by
* setting the value for the 'comment_status' key .
*
* @ since 2.0 . 0
*
* @ see wp_insert_post ()
*
* @ param string | array $args Arguments for inserting an attachment .
* @ param string $file Optional . Filename .
* @ param int $parent Optional . Parent post ID .
* @ return int Attachment ID .
*/
function wp_insert_attachment ( $args , $file = false , $parent = 0 ) {
$defaults = array (
'file' => $file ,
'post_parent' => 0
);
$data = wp_parse_args ( $args , $defaults );
if ( ! empty ( $parent ) ) {
$data [ 'post_parent' ] = $parent ;
}
$data [ 'post_type' ] = 'attachment' ;
return wp_insert_post ( $data );
}
/**
* Trash or delete an attachment .
*
* When an attachment is permanently deleted , the file will also be removed .
* Deletion removes all post meta fields , taxonomy , comments , etc . associated
* with the attachment ( except the main post ) .
*
* The attachment is moved to the trash instead of permanently deleted unless trash
* for media is disabled , item is already in the trash , or $force_delete is true .
*
* @ since 2.0 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param int $post_id Attachment ID .
* @ param bool $force_delete Optional . Whether to bypass trash and force deletion .
* Default false .
* @ return mixed False on failure . Post data on success .
*/
function wp_delete_attachment ( $post_id , $force_delete = false ) {
global $wpdb ;
if ( ! $post = $wpdb -> get_row ( $wpdb -> prepare ( " SELECT * FROM $wpdb->posts WHERE ID = %d " , $post_id ) ) )
return $post ;
if ( 'attachment' != $post -> post_type )
return false ;
if ( ! $force_delete && EMPTY_TRASH_DAYS && MEDIA_TRASH && 'trash' != $post -> post_status )
return wp_trash_post ( $post_id );
delete_post_meta ( $post_id , '_wp_trash_meta_status' );
delete_post_meta ( $post_id , '_wp_trash_meta_time' );
$meta = wp_get_attachment_metadata ( $post_id );
$backup_sizes = get_post_meta ( $post -> ID , '_wp_attachment_backup_sizes' , true );
$file = get_attached_file ( $post_id );
if ( is_multisite () )
delete_transient ( 'dirsize_cache' );
/**
* Fires before an attachment is deleted , at the start of wp_delete_attachment () .
*
* @ since 2.0 . 0
*
* @ param int $post_id Attachment ID .
*/
do_action ( 'delete_attachment' , $post_id );
wp_delete_object_term_relationships ( $post_id , array ( 'category' , 'post_tag' ));
wp_delete_object_term_relationships ( $post_id , get_object_taxonomies ( $post -> post_type ));
// Delete all for any posts.
delete_metadata ( 'post' , null , '_thumbnail_id' , $post_id , true );
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wp_defer_comment_counting ( true );
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$comment_ids = $wpdb -> get_col ( $wpdb -> prepare ( " SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d " , $post_id ));
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foreach ( $comment_ids as $comment_id ) {
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wp_delete_comment ( $comment_id , true );
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}
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wp_defer_comment_counting ( false );
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$post_meta_ids = $wpdb -> get_col ( $wpdb -> prepare ( " SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d " , $post_id ));
foreach ( $post_meta_ids as $mid )
delete_metadata_by_mid ( 'post' , $mid );
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/** This action is documented in wp-includes/post-functions.php */
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do_action ( 'delete_post' , $post_id );
$result = $wpdb -> delete ( $wpdb -> posts , array ( 'ID' => $post_id ) );
if ( ! $result ) {
return false ;
}
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/** This action is documented in wp-includes/post-functions.php */
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do_action ( 'deleted_post' , $post_id );
$uploadpath = wp_upload_dir ();
if ( ! empty ( $meta [ 'thumb' ]) ) {
// Don't delete the thumb if another attachment uses it.
if ( ! $wpdb -> get_row ( $wpdb -> prepare ( " SELECT meta_id FROM $wpdb->postmeta WHERE meta_key = '_wp_attachment_metadata' AND meta_value LIKE %s AND post_id <> %d " , '%' . $wpdb -> esc_like ( $meta [ 'thumb' ] ) . '%' , $post_id )) ) {
$thumbfile = str_replace ( basename ( $file ), $meta [ 'thumb' ], $file );
/** This filter is documented in wp-includes/functions.php */
$thumbfile = apply_filters ( 'wp_delete_file' , $thumbfile );
@ unlink ( path_join ( $uploadpath [ 'basedir' ], $thumbfile ) );
}
}
// Remove intermediate and backup images if there are any.
if ( isset ( $meta [ 'sizes' ] ) && is_array ( $meta [ 'sizes' ] ) ) {
foreach ( $meta [ 'sizes' ] as $size => $sizeinfo ) {
$intermediate_file = str_replace ( basename ( $file ), $sizeinfo [ 'file' ], $file );
/** This filter is documented in wp-includes/functions.php */
$intermediate_file = apply_filters ( 'wp_delete_file' , $intermediate_file );
@ unlink ( path_join ( $uploadpath [ 'basedir' ], $intermediate_file ) );
}
}
if ( is_array ( $backup_sizes ) ) {
foreach ( $backup_sizes as $size ) {
$del_file = path_join ( dirname ( $meta [ 'file' ]), $size [ 'file' ] );
/** This filter is documented in wp-includes/functions.php */
$del_file = apply_filters ( 'wp_delete_file' , $del_file );
@ unlink ( path_join ( $uploadpath [ 'basedir' ], $del_file ) );
}
}
wp_delete_file ( $file );
clean_post_cache ( $post );
return $post ;
}
/**
* Retrieve attachment meta field for attachment ID .
*
* @ since 2.1 . 0
*
* @ param int $post_id Attachment ID . Default 0.
* @ param bool $unfiltered Optional . If true , filters are not run . Default false .
* @ return mixed Attachment meta field . False on failure .
*/
function wp_get_attachment_metadata ( $post_id = 0 , $unfiltered = false ) {
$post_id = ( int ) $post_id ;
if ( ! $post = get_post ( $post_id ) )
return false ;
$data = get_post_meta ( $post -> ID , '_wp_attachment_metadata' , true );
if ( $unfiltered )
return $data ;
/**
* Filter the attachment meta data .
*
* @ since 2.1 . 0
*
* @ param array | bool $data Array of meta data for the given attachment , or false
* if the object does not exist .
* @ param int $post_id Attachment ID .
*/
return apply_filters ( 'wp_get_attachment_metadata' , $data , $post -> ID );
}
/**
* Update metadata for an attachment .
*
* @ since 2.1 . 0
*
* @ param int $post_id Attachment ID .
* @ param array $data Attachment data .
* @ return int | bool False if $post is invalid .
*/
function wp_update_attachment_metadata ( $post_id , $data ) {
$post_id = ( int ) $post_id ;
if ( ! $post = get_post ( $post_id ) )
return false ;
/**
* Filter the updated attachment meta data .
*
* @ since 2.1 . 0
*
* @ param array $data Array of updated attachment meta data .
* @ param int $post_id Attachment ID .
*/
if ( $data = apply_filters ( 'wp_update_attachment_metadata' , $data , $post -> ID ) )
return update_post_meta ( $post -> ID , '_wp_attachment_metadata' , $data );
else
return delete_post_meta ( $post -> ID , '_wp_attachment_metadata' );
}
/**
* Retrieve the URL for an attachment .
*
* @ since 2.1 . 0
*
* @ global string $pagenow
*
* @ param int $post_id Optional . Attachment ID . Default 0.
* @ return string | false Attachment URL , otherwise false .
*/
function wp_get_attachment_url ( $post_id = 0 ) {
$post_id = ( int ) $post_id ;
if ( ! $post = get_post ( $post_id ) )
return false ;
if ( 'attachment' != $post -> post_type )
return false ;
$url = '' ;
// Get attached file.
if ( $file = get_post_meta ( $post -> ID , '_wp_attached_file' , true ) ) {
// Get upload directory.
if ( ( $uploads = wp_upload_dir ()) && false === $uploads [ 'error' ] ) {
// Check that the upload base exists in the file location.
if ( 0 === strpos ( $file , $uploads [ 'basedir' ] ) ) {
// Replace file location with url location.
$url = str_replace ( $uploads [ 'basedir' ], $uploads [ 'baseurl' ], $file );
} elseif ( false !== strpos ( $file , 'wp-content/uploads' ) ) {
$url = $uploads [ 'baseurl' ] . substr ( $file , strpos ( $file , 'wp-content/uploads' ) + 18 );
} else {
// It's a newly-uploaded file, therefore $file is relative to the basedir.
$url = $uploads [ 'baseurl' ] . " / $file " ;
}
}
}
/*
* If any of the above options failed , Fallback on the GUID as used pre - 2.7 ,
* not recommended to rely upon this .
*/
if ( empty ( $url ) ) {
$url = get_the_guid ( $post -> ID );
}
// On SSL front-end, URLs should be HTTPS.
if ( is_ssl () && ! is_admin () && 'wp-login.php' !== $GLOBALS [ 'pagenow' ] ) {
$url = set_url_scheme ( $url );
}
/**
* Filter the attachment URL .
*
* @ since 2.1 . 0
*
* @ param string $url URL for the given attachment .
* @ param int $post_id Attachment ID .
*/
$url = apply_filters ( 'wp_get_attachment_url' , $url , $post -> ID );
if ( empty ( $url ) )
return false ;
return $url ;
}
/**
* Retrieve thumbnail for an attachment .
*
* @ since 2.1 . 0
*
* @ param int $post_id Optional . Attachment ID . Default 0.
* @ return string | false False on failure . Thumbnail file path on success .
*/
function wp_get_attachment_thumb_file ( $post_id = 0 ) {
$post_id = ( int ) $post_id ;
if ( ! $post = get_post ( $post_id ) )
return false ;
if ( ! is_array ( $imagedata = wp_get_attachment_metadata ( $post -> ID ) ) )
return false ;
$file = get_attached_file ( $post -> ID );
if ( ! empty ( $imagedata [ 'thumb' ]) && ( $thumbfile = str_replace ( basename ( $file ), $imagedata [ 'thumb' ], $file )) && file_exists ( $thumbfile ) ) {
/**
* Filter the attachment thumbnail file path .
*
* @ since 2.1 . 0
*
* @ param string $thumbfile File path to the attachment thumbnail .
* @ param int $post_id Attachment ID .
*/
return apply_filters ( 'wp_get_attachment_thumb_file' , $thumbfile , $post -> ID );
}
return false ;
}
/**
* Retrieve URL for an attachment thumbnail .
*
* @ since 2.1 . 0
*
* @ param int $post_id Optional . Attachment ID . Default 0.
* @ return string | false False on failure . Thumbnail URL on success .
*/
function wp_get_attachment_thumb_url ( $post_id = 0 ) {
$post_id = ( int ) $post_id ;
if ( ! $post = get_post ( $post_id ) )
return false ;
if ( ! $url = wp_get_attachment_url ( $post -> ID ) )
return false ;
$sized = image_downsize ( $post_id , 'thumbnail' );
if ( $sized )
return $sized [ 0 ];
if ( ! $thumb = wp_get_attachment_thumb_file ( $post -> ID ) )
return false ;
$url = str_replace ( basename ( $url ), basename ( $thumb ), $url );
/**
* Filter the attachment thumbnail URL .
*
* @ since 2.1 . 0
*
* @ param string $url URL for the attachment thumbnail .
* @ param int $post_id Attachment ID .
*/
return apply_filters ( 'wp_get_attachment_thumb_url' , $url , $post -> ID );
}
/**
* Verifies an attachment is of a given type .
*
* @ since 4.2 . 0
*
* @ param string $type Attachment type . Accepts 'image' , 'audio' , or 'video' .
* @ param int | WP_Post $post_id Optional . Attachment ID . Default 0.
* @ return bool True if one of the accepted types , false otherwise .
*/
function wp_attachment_is ( $type , $post_id = 0 ) {
if ( ! $post = get_post ( $post_id ) ) {
return false ;
}
if ( ! $file = get_attached_file ( $post -> ID ) ) {
return false ;
}
if ( 0 === strpos ( $post -> post_mime_type , $type . '/' ) ) {
return true ;
}
$check = wp_check_filetype ( $file );
if ( empty ( $check [ 'ext' ] ) ) {
return false ;
}
$ext = $check [ 'ext' ];
if ( 'import' !== $post -> post_mime_type ) {
return $type === $ext ;
}
switch ( $type ) {
case 'image' :
$image_exts = array ( 'jpg' , 'jpeg' , 'jpe' , 'gif' , 'png' );
return in_array ( $ext , $image_exts );
case 'audio' :
return in_array ( $ext , wp_get_audio_extensions () );
case 'video' :
return in_array ( $ext , wp_get_video_extensions () );
default :
return $type === $ext ;
}
}
/**
* Checks if the attachment is an image .
*
* @ since 2.1 . 0
* @ since 4.2 . 0 Modified into wrapper for wp_attachment_is () and
* allowed WP_Post object to be passed .
*
* @ param int | WP_Post $post Optional . Attachment ID . Default 0.
* @ return bool Whether the attachment is an image .
*/
function wp_attachment_is_image ( $post = 0 ) {
return wp_attachment_is ( 'image' , $post );
}
/**
* Retrieve the icon for a MIME type .
*
* @ since 2.1 . 0
*
* @ param string | int $mime MIME type or attachment ID .
* @ return string | false Icon , false otherwise .
*/
function wp_mime_type_icon ( $mime = 0 ) {
if ( ! is_numeric ( $mime ) )
$icon = wp_cache_get ( " mime_type_icon_ $mime " );
$post_id = 0 ;
if ( empty ( $icon ) ) {
$post_mimes = array ();
if ( is_numeric ( $mime ) ) {
$mime = ( int ) $mime ;
if ( $post = get_post ( $mime ) ) {
$post_id = ( int ) $post -> ID ;
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$file = get_attached_file ( $post_id );
$ext = preg_replace ( '/^.+?\.([^.]+)$/' , '$1' , $file );
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if ( ! empty ( $ext ) ) {
$post_mimes [] = $ext ;
if ( $ext_type = wp_ext2type ( $ext ) )
$post_mimes [] = $ext_type ;
}
$mime = $post -> post_mime_type ;
} else {
$mime = 0 ;
}
} else {
$post_mimes [] = $mime ;
}
$icon_files = wp_cache_get ( 'icon_files' );
if ( ! is_array ( $icon_files ) ) {
/**
* Filter the icon directory path .
*
* @ since 2.0 . 0
*
* @ param string $path Icon directory absolute path .
*/
$icon_dir = apply_filters ( 'icon_dir' , ABSPATH . WPINC . '/images/media' );
/**
* Filter the icon directory URI .
*
* @ since 2.0 . 0
*
* @ param string $uri Icon directory URI .
*/
$icon_dir_uri = apply_filters ( 'icon_dir_uri' , includes_url ( 'images/media' ) );
/**
* Filter the list of icon directory URIs .
*
* @ since 2.5 . 0
*
* @ param array $uris List of icon directory URIs .
*/
$dirs = apply_filters ( 'icon_dirs' , array ( $icon_dir => $icon_dir_uri ) );
$icon_files = array ();
while ( $dirs ) {
$keys = array_keys ( $dirs );
$dir = array_shift ( $keys );
$uri = array_shift ( $dirs );
if ( $dh = opendir ( $dir ) ) {
while ( false !== $file = readdir ( $dh ) ) {
$file = basename ( $file );
if ( substr ( $file , 0 , 1 ) == '.' )
continue ;
if ( ! in_array ( strtolower ( substr ( $file , - 4 )), array ( '.png' , '.gif' , '.jpg' ) ) ) {
if ( is_dir ( " $dir / $file " ) )
$dirs [ " $dir / $file " ] = " $uri / $file " ;
continue ;
}
$icon_files [ " $dir / $file " ] = " $uri / $file " ;
}
closedir ( $dh );
}
}
wp_cache_add ( 'icon_files' , $icon_files , 'default' , 600 );
}
$types = array ();
// Icon basename - extension = MIME wildcard.
foreach ( $icon_files as $file => $uri )
$types [ preg_replace ( '/^([^.]*).*$/' , '$1' , basename ( $file )) ] =& $icon_files [ $file ];
if ( ! empty ( $mime ) ) {
$post_mimes [] = substr ( $mime , 0 , strpos ( $mime , '/' ));
$post_mimes [] = substr ( $mime , strpos ( $mime , '/' ) + 1 );
$post_mimes [] = str_replace ( '/' , '_' , $mime );
}
$matches = wp_match_mime_types ( array_keys ( $types ), $post_mimes );
$matches [ 'default' ] = array ( 'default' );
foreach ( $matches as $match => $wilds ) {
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foreach ( $wilds as $wild ) {
if ( ! isset ( $types [ $wild ] ) ) {
continue ;
}
$icon = $types [ $wild ];
if ( ! is_numeric ( $mime ) ) {
wp_cache_add ( " mime_type_icon_ $mime " , $icon );
}
break 2 ;
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}
}
}
/**
* Filter the mime type icon .
*
* @ since 2.1 . 0
*
* @ param string $icon Path to the mime type icon .
* @ param string $mime Mime type .
* @ param int $post_id Attachment ID . Will equal 0 if the function passed
* the mime type .
*/
return apply_filters ( 'wp_mime_type_icon' , $icon , $mime , $post_id );
}
/**
* Check for changed slugs for published post objects and save the old slug .
*
* The function is used when a post object of any type is updated ,
* by comparing the current and previous post objects .
*
* If the slug was changed and not already part of the old slugs then it will be
* added to the post meta field ( '_wp_old_slug' ) for storing old slugs for that
* post .
*
* The most logically usage of this function is redirecting changed post objects , so
* that those that linked to an changed post will be redirected to the new post .
*
* @ since 2.1 . 0
*
* @ param int $post_id Post ID .
* @ param WP_Post $post The Post Object
* @ param WP_Post $post_before The Previous Post Object
*/
function wp_check_for_changed_slugs ( $post_id , $post , $post_before ) {
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// Don't bother if it hasn't changed.
if ( $post -> post_name == $post_before -> post_name ) {
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return ;
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}
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// We're only concerned with published, non-hierarchical objects.
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if ( ! ( 'publish' === $post -> post_status || ( 'attachment' === get_post_type ( $post ) && 'inherit' === $post -> post_status ) ) || is_post_type_hierarchical ( $post -> post_type ) ) {
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return ;
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}
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$old_slugs = ( array ) get_post_meta ( $post_id , '_wp_old_slug' );
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// If we haven't added this old slug before, add it now.
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if ( ! empty ( $post_before -> post_name ) && ! in_array ( $post_before -> post_name , $old_slugs ) ) {
add_post_meta ( $post_id , '_wp_old_slug' , $post_before -> post_name );
}
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// If the new slug was used previously, delete it from the list.
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if ( in_array ( $post -> post_name , $old_slugs ) ) {
delete_post_meta ( $post_id , '_wp_old_slug' , $post -> post_name );
}
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}
/**
* Retrieve the private post SQL based on capability .
*
* This function provides a standardized way to appropriately select on the
* post_status of a post type . The function will return a piece of SQL code
* that can be added to a WHERE clause ; this SQL is constructed to allow all
* published posts , and all private posts to which the user has access .
*
* @ since 2.2 . 0
* @ since 4.3 . 0 Added the ability to pass an array to `$post_type` .
*
* @ param string | array $post_type Single post type or an array of post types . Currently only supports 'post' or 'page' .
* @ return string SQL code that can be added to a where clause .
*/
function get_private_posts_cap_sql ( $post_type ) {
return get_posts_by_author_sql ( $post_type , false );
}
/**
* Retrieve the post SQL based on capability , author , and type .
*
* @ since 3.0 . 0
* @ since 4.3 . 0 Introduced the ability to pass an array of post types to `$post_type` .
*
* @ see get_private_posts_cap_sql ()
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* @ global wpdb $wpdb WordPress database abstraction object .
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*
* @ param array | string $post_type Single post type or an array of post types .
* @ param bool $full Optional . Returns a full WHERE statement instead of just
* an 'andalso' term . Default true .
* @ param int $post_author Optional . Query posts having a single author ID . Default null .
* @ param bool $public_only Optional . Only return public posts . Skips cap checks for
* $current_user . Default false .
* @ return string SQL WHERE code that can be added to a query .
*/
function get_posts_by_author_sql ( $post_type , $full = true , $post_author = null , $public_only = false ) {
global $wpdb ;
if ( is_array ( $post_type ) ) {
$post_types = $post_type ;
} else {
$post_types = array ( $post_type );
}
$post_type_clauses = array ();
foreach ( $post_types as $post_type ) {
$post_type_obj = get_post_type_object ( $post_type );
if ( ! $post_type_obj ) {
continue ;
}
/**
* Filter the capability to read private posts for a custom post type
* when generating SQL for getting posts by author .
*
* @ since 2.2 . 0
* @ deprecated 3.2 . 0 The hook transitioned from " somewhat useless " to " totally useless " .
*
* @ param string $cap Capability .
*/
if ( ! $cap = apply_filters ( 'pub_priv_sql_capability' , '' ) ) {
$cap = current_user_can ( $post_type_obj -> cap -> read_private_posts );
}
// Only need to check the cap if $public_only is false.
$post_status_sql = " post_status = 'publish' " ;
if ( false === $public_only ) {
if ( $cap ) {
// Does the user have the capability to view private posts? Guess so.
$post_status_sql .= " OR post_status = 'private' " ;
} elseif ( is_user_logged_in () ) {
// Users can view their own private posts.
$id = get_current_user_id ();
if ( null === $post_author || ! $full ) {
$post_status_sql .= " OR post_status = 'private' AND post_author = $id " ;
} elseif ( $id == ( int ) $post_author ) {
$post_status_sql .= " OR post_status = 'private' " ;
} // else none
} // else none
}
$post_type_clauses [] = " ( post_type = ' " . $post_type . " ' AND ( $post_status_sql ) ) " ;
}
if ( empty ( $post_type_clauses ) ) {
return $full ? 'WHERE 1 = 0' : '1 = 0' ;
}
$sql = '( ' . implode ( ' OR ' , $post_type_clauses ) . ' )' ;
if ( null !== $post_author ) {
$sql .= $wpdb -> prepare ( ' AND post_author = %d' , $post_author );
}
if ( $full ) {
$sql = 'WHERE ' . $sql ;
}
return $sql ;
}
/**
* Retrieve the date that the last post was published .
*
* The server timezone is the default and is the difference between GMT and
* server time . The 'blog' value is the date when the last post was posted . The
* 'gmt' is when the last post was posted in GMT formatted date .
*
* @ since 0.71
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* @ since 4.4 . 0 The `$post_type` argument was added .
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*
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* @ param string $timezone Optional . The timezone for the timestamp . Accepts 'server' , 'blog' , or 'gmt' .
* 'server' uses the server ' s internal timezone .
* 'blog' uses the `post_modified` field , which proxies to the timezone set for the site .
* 'gmt' uses the `post_modified_gmt` field .
* Default 'server' .
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* @ param string $post_type Optional . The post type to check . Default 'any' .
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* @ return string The date of the last post .
*/
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function get_lastpostdate ( $timezone = 'server' , $post_type = 'any' ) {
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/**
* Filter the date the last post was published .
*
* @ since 2.3 . 0
*
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* @ param string $date Date the last post was published .
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* @ param string $timezone Location to use for getting the post published date .
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* See { @ see get_lastpostdate ()} for accepted `$timezone` values .
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*/
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return apply_filters ( 'get_lastpostdate' , _get_last_post_time ( $timezone , 'date' , $post_type ), $timezone );
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}
/**
* Get the timestamp of the last time any post was modified .
*
* The server timezone is the default and is the difference between GMT and
* server time . The 'blog' value is just when the last post was modified . The
* 'gmt' is when the last post was modified in GMT time .
*
* @ since 1.2 . 0
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* @ since 4.4 . 0 The `$post_type` argument was added .
*
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* @ param string $timezone Optional . The timezone for the timestamp . See { @ see get_lastpostdate ()}
* for information on accepted values .
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* Default 'server' .
* @ param string $post_type Optional . The post type to check . Default 'any' .
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* @ return string The timestamp .
*/
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function get_lastpostmodified ( $timezone = 'server' , $post_type = 'any' ) {
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/**
* Pre - filter the return value of get_lastpostmodified () before the query is run .
*
* @ since 4.4 . 0
*
* @ param string $lastpostmodified Date the last post was modified .
* Returning anything other than false will short - circuit the function .
* @ param string $timezone Location to use for getting the post modified date .
* See { @ see get_lastpostdate ()} for accepted `$timezone` values .
* @ param string $post_type The post type to check .
*/
$lastpostmodified = apply_filters ( 'pre_get_lastpostmodified' , false , $timezone , $post_type );
if ( false !== $lastpostmodified ) {
return $lastpostmodified ;
}
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$lastpostmodified = _get_last_post_time ( $timezone , 'modified' , $post_type );
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$lastpostdate = get_lastpostdate ( $timezone );
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if ( $lastpostdate > $lastpostmodified ) {
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$lastpostmodified = $lastpostdate ;
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}
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/**
* Filter the date the last post was modified .
*
* @ since 2.3 . 0
*
* @ param string $lastpostmodified Date the last post was modified .
* @ param string $timezone Location to use for getting the post modified date .
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* See { @ see get_lastpostdate ()} for accepted `$timezone` values .
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*/
return apply_filters ( 'get_lastpostmodified' , $lastpostmodified , $timezone );
}
/**
* Get the timestamp of the last time any post was modified or published .
*
* @ since 3.1 . 0
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* @ since 4.4 . 0 The `$post_type` argument was added .
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* @ access private
*
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* @ global wpdb $wpdb WordPress database abstraction object .
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*
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* @ param string $timezone The timezone for the timestamp . See get_lastpostdate () .
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* for information on accepted values .
* @ param string $field Post field to check . Accepts 'date' or 'modified' .
* @ param string $post_type Optional . The post type to check . Default 'any' .
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* @ return string | false The timestamp .
*/
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function _get_last_post_time ( $timezone , $field , $post_type = 'any' ) {
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global $wpdb ;
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if ( ! in_array ( $field , array ( 'date' , 'modified' ) ) ) {
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return false ;
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}
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$timezone = strtolower ( $timezone );
$key = " lastpost { $field } : $timezone " ;
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if ( 'any' !== $post_type ) {
$key .= ':' . sanitize_key ( $post_type );
}
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$date = wp_cache_get ( $key , 'timeinfo' );
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if ( ! $date ) {
if ( 'any' === $post_type ) {
$post_types = get_post_types ( array ( 'public' => true ) );
array_walk ( $post_types , array ( $wpdb , 'escape_by_ref' ) );
$post_types = " ' " . implode ( " ', ' " , $post_types ) . " ' " ;
} else {
$post_types = " ' " . sanitize_key ( $post_type ) . " ' " ;
}
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switch ( $timezone ) {
case 'gmt' :
$date = $wpdb -> get_var ( " SELECT post_ { $field } _gmt FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ( { $post_types } ) ORDER BY post_ { $field } _gmt DESC LIMIT 1 " );
break ;
case 'blog' :
$date = $wpdb -> get_var ( " SELECT post_ { $field } FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ( { $post_types } ) ORDER BY post_ { $field } _gmt DESC LIMIT 1 " );
break ;
case 'server' :
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$add_seconds_server = date ( 'Z' );
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$date = $wpdb -> get_var ( " SELECT DATE_ADD(post_ { $field } _gmt, INTERVAL ' $add_seconds_server ' SECOND) FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ( { $post_types } ) ORDER BY post_ { $field } _gmt DESC LIMIT 1 " );
break ;
}
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if ( $date ) {
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wp_cache_set ( $key , $date , 'timeinfo' );
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}
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}
return $date ;
}
/**
* Updates posts in cache .
*
* @ since 1.5 . 1
*
* @ param array $posts Array of post objects , passed by reference .
*/
function update_post_cache ( & $posts ) {
if ( ! $posts )
return ;
foreach ( $posts as $post )
wp_cache_add ( $post -> ID , $post , 'posts' );
}
/**
* Will clean the post in the cache .
*
* Cleaning means delete from the cache of the post . Will call to clean the term
* object cache associated with the post ID .
*
* This function not run if $_wp_suspend_cache_invalidation is not empty . See
* wp_suspend_cache_invalidation () .
*
* @ since 2.0 . 0
*
* @ global bool $_wp_suspend_cache_invalidation
*
* @ param int | WP_Post $post Post ID or post object to remove from the cache .
*/
function clean_post_cache ( $post ) {
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global $_wp_suspend_cache_invalidation ;
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if ( ! empty ( $_wp_suspend_cache_invalidation ) )
return ;
$post = get_post ( $post );
if ( empty ( $post ) )
return ;
wp_cache_delete ( $post -> ID , 'posts' );
wp_cache_delete ( $post -> ID , 'post_meta' );
clean_object_term_cache ( $post -> ID , $post -> post_type );
wp_cache_delete ( 'wp_get_archives' , 'general' );
/**
* Fires immediately after the given post ' s cache is cleaned .
*
* @ since 2.5 . 0
*
* @ param int $post_id Post ID .
* @ param WP_Post $post Post object .
*/
do_action ( 'clean_post_cache' , $post -> ID , $post );
if ( 'page' == $post -> post_type ) {
wp_cache_delete ( 'all_page_ids' , 'posts' );
/**
* Fires immediately after the given page ' s cache is cleaned .
*
* @ since 2.5 . 0
*
* @ param int $post_id Post ID .
*/
do_action ( 'clean_page_cache' , $post -> ID );
}
wp_cache_set ( 'last_changed' , microtime (), 'posts' );
}
/**
* Call major cache updating functions for list of Post objects .
*
* @ since 1.5 . 0
*
* @ param array $posts Array of Post objects
* @ param string $post_type Optional . Post type . Default 'post' .
* @ param bool $update_term_cache Optional . Whether to update the term cache . Default true .
* @ param bool $update_meta_cache Optional . Whether to update the meta cache . Default true .
*/
function update_post_caches ( & $posts , $post_type = 'post' , $update_term_cache = true , $update_meta_cache = true ) {
// No point in doing all this work if we didn't match any posts.
if ( ! $posts )
return ;
update_post_cache ( $posts );
$post_ids = array ();
foreach ( $posts as $post )
$post_ids [] = $post -> ID ;
if ( ! $post_type )
$post_type = 'any' ;
if ( $update_term_cache ) {
if ( is_array ( $post_type ) ) {
$ptypes = $post_type ;
} elseif ( 'any' == $post_type ) {
$ptypes = array ();
// Just use the post_types in the supplied posts.
foreach ( $posts as $post ) {
$ptypes [] = $post -> post_type ;
}
$ptypes = array_unique ( $ptypes );
} else {
$ptypes = array ( $post_type );
}
if ( ! empty ( $ptypes ) )
update_object_term_cache ( $post_ids , $ptypes );
}
if ( $update_meta_cache )
update_postmeta_cache ( $post_ids );
}
/**
* Updates metadata cache for list of post IDs .
*
* Performs SQL query to retrieve the metadata for the post IDs and updates the
* metadata cache for the posts . Therefore , the functions , which call this
* function , do not need to perform SQL queries on their own .
*
* @ since 2.1 . 0
*
* @ param array $post_ids List of post IDs .
* @ return array | false Returns false if there is nothing to update or an array
* of metadata .
*/
function update_postmeta_cache ( $post_ids ) {
return update_meta_cache ( 'post' , $post_ids );
}
/**
* Will clean the attachment in the cache .
*
* Cleaning means delete from the cache . Optionally will clean the term
* object cache associated with the attachment ID .
*
* This function will not run if $_wp_suspend_cache_invalidation is not empty .
*
* @ since 3.0 . 0
*
* @ global bool $_wp_suspend_cache_invalidation
*
* @ param int $id The attachment ID in the cache to clean .
* @ param bool $clean_terms Optional . Whether to clean terms cache . Default false .
*/
function clean_attachment_cache ( $id , $clean_terms = false ) {
global $_wp_suspend_cache_invalidation ;
if ( ! empty ( $_wp_suspend_cache_invalidation ) )
return ;
$id = ( int ) $id ;
wp_cache_delete ( $id , 'posts' );
wp_cache_delete ( $id , 'post_meta' );
if ( $clean_terms )
clean_object_term_cache ( $id , 'attachment' );
/**
* Fires after the given attachment ' s cache is cleaned .
*
* @ since 3.0 . 0
*
* @ param int $id Attachment ID .
*/
do_action ( 'clean_attachment_cache' , $id );
}
//
// Hooks
//
/**
* Hook for managing future post transitions to published .
*
* @ since 2.3 . 0
* @ access private
*
* @ see wp_clear_scheduled_hook ()
* @ global wpdb $wpdb WordPress database abstraction object .
*
* @ param string $new_status New post status .
* @ param string $old_status Previous post status .
* @ param WP_Post $post Post object .
*/
function _transition_post_status ( $new_status , $old_status , $post ) {
global $wpdb ;
if ( $old_status != 'publish' && $new_status == 'publish' ) {
// Reset GUID if transitioning to publish and it is empty.
if ( '' == get_the_guid ( $post -> ID ) )
$wpdb -> update ( $wpdb -> posts , array ( 'guid' => get_permalink ( $post -> ID ) ), array ( 'ID' => $post -> ID ) );
/**
* Fires when a post ' s status is transitioned from private to published .
*
* @ since 1.5 . 0
* @ deprecated 2.3 . 0 Use 'private_to_publish' instead .
*
* @ param int $post_id Post ID .
*/
do_action ( 'private_to_published' , $post -> ID );
}
// If published posts changed clear the lastpostmodified cache.
if ( 'publish' == $new_status || 'publish' == $old_status ) {
foreach ( array ( 'server' , 'gmt' , 'blog' ) as $timezone ) {
wp_cache_delete ( " lastpostmodified: $timezone " , 'timeinfo' );
wp_cache_delete ( " lastpostdate: $timezone " , 'timeinfo' );
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wp_cache_delete ( " lastpostdate: $timezone : { $post -> post_type } " , 'timeinfo' );
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}
}
if ( $new_status !== $old_status ) {
wp_cache_delete ( _count_posts_cache_key ( $post -> post_type ), 'counts' );
wp_cache_delete ( _count_posts_cache_key ( $post -> post_type , 'readable' ), 'counts' );
}
// Always clears the hook in case the post status bounced from future to draft.
wp_clear_scheduled_hook ( 'publish_future_post' , array ( $post -> ID ) );
}
/**
* Hook used to schedule publication for a post marked for the future .
*
* The $post properties used and must exist are 'ID' and 'post_date_gmt' .
*
* @ since 2.3 . 0
* @ access private
*
* @ param int $deprecated Not used . Can be set to null . Never implemented . Not marked
* as deprecated with _deprecated_argument () as it conflicts with
* wp_transition_post_status () and the default filter for
* { @ see _future_post_hook ()} .
* @ param WP_Post $post Post object .
*/
function _future_post_hook ( $deprecated , $post ) {
wp_clear_scheduled_hook ( 'publish_future_post' , array ( $post -> ID ) );
wp_schedule_single_event ( strtotime ( get_gmt_from_date ( $post -> post_date ) . ' GMT' ) , 'publish_future_post' , array ( $post -> ID ) );
}
/**
* Hook to schedule pings and enclosures when a post is published .
*
* Uses XMLRPC_REQUEST and WP_IMPORTING constants .
*
* @ since 2.3 . 0
* @ access private
*
* @ param int $post_id The ID in the database table of the post being published .
*/
function _publish_post_hook ( $post_id ) {
if ( defined ( 'XMLRPC_REQUEST' ) ) {
/**
* Fires when _publish_post_hook () is called during an XML - RPC request .
*
* @ since 2.1 . 0
*
* @ param int $post_id Post ID .
*/
do_action ( 'xmlrpc_publish_post' , $post_id );
}
if ( defined ( 'WP_IMPORTING' ) )
return ;
if ( get_option ( 'default_pingback_flag' ) )
add_post_meta ( $post_id , '_pingme' , '1' );
add_post_meta ( $post_id , '_encloseme' , '1' );
wp_schedule_single_event ( time (), 'do_pings' );
}
/**
* Return the post 's parent' s post_ID
*
* @ since 3.1 . 0
*
* @ param int $post_ID
*
* @ return int | false Post parent ID , otherwise false .
*/
function wp_get_post_parent_id ( $post_ID ) {
$post = get_post ( $post_ID );
if ( ! $post || is_wp_error ( $post ) )
return false ;
return ( int ) $post -> post_parent ;
}
/**
* Check the given subset of the post hierarchy for hierarchy loops .
*
* Prevents loops from forming and breaks those that it finds . Attached
* to the 'wp_insert_post_parent' filter .
*
* @ since 3.1 . 0
*
* @ see wp_find_hierarchy_loop ()
*
* @ param int $post_parent ID of the parent for the post we ' re checking .
* @ param int $post_ID ID of the post we ' re checking .
* @ return int The new post_parent for the post , 0 otherwise .
*/
function wp_check_post_hierarchy_for_loops ( $post_parent , $post_ID ) {
// Nothing fancy here - bail.
if ( ! $post_parent )
return 0 ;
// New post can't cause a loop.
if ( empty ( $post_ID ) )
return $post_parent ;
// Can't be its own parent.
if ( $post_parent == $post_ID )
return 0 ;
// Now look for larger loops.
if ( ! $loop = wp_find_hierarchy_loop ( 'wp_get_post_parent_id' , $post_ID , $post_parent ) )
return $post_parent ; // No loop
// Setting $post_parent to the given value causes a loop.
if ( isset ( $loop [ $post_ID ] ) )
return 0 ;
// There's a loop, but it doesn't contain $post_ID. Break the loop.
foreach ( array_keys ( $loop ) as $loop_member )
wp_update_post ( array ( 'ID' => $loop_member , 'post_parent' => 0 ) );
return $post_parent ;
}
/**
* Set a post thumbnail .
*
* @ since 3.1 . 0
*
* @ param int | WP_Post $post Post ID or post object where thumbnail should be attached .
* @ param int $thumbnail_id Thumbnail to attach .
* @ return int | bool True on success , false on failure .
*/
function set_post_thumbnail ( $post , $thumbnail_id ) {
$post = get_post ( $post );
$thumbnail_id = absint ( $thumbnail_id );
if ( $post && $thumbnail_id && get_post ( $thumbnail_id ) ) {
if ( wp_get_attachment_image ( $thumbnail_id , 'thumbnail' ) )
return update_post_meta ( $post -> ID , '_thumbnail_id' , $thumbnail_id );
else
return delete_post_meta ( $post -> ID , '_thumbnail_id' );
}
return false ;
}
/**
* Remove a post thumbnail .
*
* @ since 3.3 . 0
*
* @ param int | WP_Post $post Post ID or post object where thumbnail should be removed from .
* @ return bool True on success , false on failure .
*/
function delete_post_thumbnail ( $post ) {
$post = get_post ( $post );
if ( $post )
return delete_post_meta ( $post -> ID , '_thumbnail_id' );
return false ;
}
/**
* Delete auto - drafts for new posts that are > 7 days old .
*
* @ since 3.4 . 0
*
* @ global wpdb $wpdb WordPress database abstraction object .
*/
function wp_delete_auto_drafts () {
global $wpdb ;
// Cleanup old auto-drafts more than 7 days old.
$old_posts = $wpdb -> get_col ( " SELECT ID FROM $wpdb->posts WHERE post_status = 'auto-draft' AND DATE_SUB( NOW(), INTERVAL 7 DAY ) > post_date " );
foreach ( ( array ) $old_posts as $delete ) {
// Force delete.
wp_delete_post ( $delete , true );
}
}
/**
* Update the custom taxonomies ' term counts when a post' s status is changed .
*
* For example , default posts term counts ( for custom taxonomies ) don ' t include
* private / draft posts .
*
* @ since 3.3 . 0
* @ access private
*
* @ param string $new_status New post status .
* @ param string $old_status Old post status .
* @ param WP_Post $post Post object .
*/
function _update_term_count_on_transition_post_status ( $new_status , $old_status , $post ) {
// Update counts for the post's terms.
foreach ( ( array ) get_object_taxonomies ( $post -> post_type ) as $taxonomy ) {
$tt_ids = wp_get_object_terms ( $post -> ID , $taxonomy , array ( 'fields' => 'tt_ids' ) );
wp_update_term_count ( $tt_ids , $taxonomy );
}
}
/**
* Adds any posts from the given ids to the cache that do not already exist in cache
*
* @ since 3.4 . 0
* @ access private
*
* @ see update_post_caches ()
*
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* @ global wpdb $wpdb WordPress database abstraction object .
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*
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* @ param array $ids ID list .
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* @ param bool $update_term_cache Optional . Whether to update the term cache . Default true .
* @ param bool $update_meta_cache Optional . Whether to update the meta cache . Default true .
*/
function _prime_post_caches ( $ids , $update_term_cache = true , $update_meta_cache = true ) {
global $wpdb ;
$non_cached_ids = _get_non_cached_ids ( $ids , 'posts' );
if ( ! empty ( $non_cached_ids ) ) {
$fresh_posts = $wpdb -> get_results ( sprintf ( " SELECT $wpdb->posts .* FROM $wpdb->posts WHERE ID IN (%s) " , join ( " , " , $non_cached_ids ) ) );
update_post_caches ( $fresh_posts , 'any' , $update_term_cache , $update_meta_cache );
}
}
