268 lines
7.7 KiB
PHP
268 lines
7.7 KiB
PHP
<?php
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// WordPress DB Class
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// ORIGINAL CODE FROM:
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// Justin Vincent (justin@visunet.ie)
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// http://php.justinvincent.com
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define('EZSQL_VERSION', 'WP1.25');
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define('OBJECT', 'OBJECT', true);
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define('ARRAY_A', 'ARRAY_A', false);
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define('ARRAY_N', 'ARRAY_N', false);
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if (!defined('SAVEQUERIES'))
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define('SAVEQUERIES', false);
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class wpdb {
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var $show_errors = true;
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var $num_queries = 0;
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var $last_query;
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var $col_info;
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// ==================================================================
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// DB Constructor - connects to the server and selects a database
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function wpdb($dbuser, $dbpassword, $dbname, $dbhost) {
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$this->dbh = @mysql_connect($dbhost,$dbuser,$dbpassword);
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if (!$this->dbh) {
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die("<div>
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<p><strong>Error establishing a database connection!</strong> This probably means that the connection information in your <code>wp-config.php</code> file is incorrect. Double check it and try again.</p>
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<ul>
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<li>Are you sure you have the correct user/password?</li>
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<li>Are you sure that you have typed the correct hostname?</li>
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<li>Are you sure that the database server is running?</li>
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</ul>
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<p><a href='http://wordpress.org/support/'>WordPress Support Forums</a></p>
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</div>");
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}
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$this->select($dbname);
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}
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// ==================================================================
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// Select a DB (if another one needs to be selected)
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function select($db) {
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if (!@mysql_select_db($db,$this->dbh)) {
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die("
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<p>We're having a little trouble selecting the proper database for WordPress.</p>
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<ul>
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<li>Are you sure it exists?</li>
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<li>Your database name is currently specified as <code>" . DB_NAME ."</code>. Is this correct?</li>
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<li>On some systems the name of your database is prefixed with your username, so it would be like username_wordpress. Could that be the problem?</li>
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</ul>
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<p><a href='http://wordpress.org/support/'>WordPress Support Forums</a></p>");
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}
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}
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// ====================================================================
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// Format a string correctly for safe insert under all PHP conditions
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function escape($str) {
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return mysql_escape_string(stripslashes($str));
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}
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// ==================================================================
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// Print SQL/DB error.
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function print_error($str = '') {
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global $EZSQL_ERROR;
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if (!$str) $str = mysql_error();
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$EZSQL_ERROR[] =
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array ('query' => $this->last_query, 'error_str' => $str);
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// Is error output turned on or not..
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if ( $this->show_errors ) {
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// If there is an error then take note of it
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print "<div id='error'>
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<p><strong>Database error:</strong> [$str]<br />
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<code>$this->last_query</code></p>
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</div>";
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} else {
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return false;
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}
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}
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// ==================================================================
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// Turn error handling on or off..
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function show_errors() {
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$this->show_errors = true;
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}
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function hide_errors() {
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$this->show_errors = false;
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}
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// ==================================================================
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// Kill cached query results
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function flush() {
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$this->last_result = null;
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$this->col_info = null;
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$this->last_query = null;
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}
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// ==================================================================
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// Basic Query - see docs for more detail
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function query($query) {
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// initialise return
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$return_val = 0;
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$this->flush();
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// Log how the function was called
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$this->func_call = "\$db->query(\"$query\")";
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// Keep track of the last query for debug..
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$this->last_query = $query;
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// Perform the query via std mysql_query function..
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$this->result = @mysql_query($query,$this->dbh);
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++$this->num_queries;
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if (SAVEQUERIES) {
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$this->savedqueries[] = $query;
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}
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// If there is an error then take note of it..
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if ( mysql_error() ) {
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$this->print_error();
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return false;
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}
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if ( preg_match("/^\\s*(insert|delete|update|replace) /i",$query) ) {
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$this->rows_affected = mysql_affected_rows();
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// Take note of the insert_id
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if ( preg_match("/^\\s*(insert|replace) /i",$query) ) {
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$this->insert_id = mysql_insert_id($this->dbh);
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}
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// Return number of rows affected
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$return_val = $this->rows_affected;
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} else {
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$i = 0;
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while ($i < @mysql_num_fields($this->result)) {
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$this->col_info[$i] = @mysql_fetch_field($this->result);
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$i++;
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}
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$num_rows = 0;
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while ( $row = @mysql_fetch_object($this->result) ) {
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$this->last_result[$num_rows] = $row;
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$num_rows++;
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}
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@mysql_free_result($this->result);
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// Log number of rows the query returned
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$this->num_rows = $num_rows;
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// Return number of rows selected
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$return_val = $this->num_rows;
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}
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return $return_val;
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}
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// ==================================================================
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// Get one variable from the DB - see docs for more detail
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function get_var($query=null, $x = 0, $y = 0) {
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$this->func_call = "\$db->get_var(\"$query\",$x,$y)";
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if ( $query )
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$this->query($query);
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// Extract var out of cached results based x,y vals
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if ( $this->last_result[$y] ) {
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$values = array_values(get_object_vars($this->last_result[$y]));
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}
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// If there is a value return it else return null
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return (isset($values[$x]) && $values[$x]!=='') ? $values[$x] : null;
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}
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// ==================================================================
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// Get one row from the DB - see docs for more detail
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function get_row($query = null, $output = OBJECT, $y = 0) {
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$this->func_call = "\$db->get_row(\"$query\",$output,$y)";
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if ( $query )
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$this->query($query);
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if ( $output == OBJECT ) {
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return $this->last_result[$y] ? $this->last_result[$y] : null;
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} elseif ( $output == ARRAY_A ) {
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return $this->last_result[$y] ? get_object_vars($this->last_result[$y]) : null;
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} elseif ( $output == ARRAY_N ) {
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return $this->last_result[$y] ? array_values(get_object_vars($this->last_result[$y])) : null;
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} else {
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$this->print_error(" \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N");
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}
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}
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// ==================================================================
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// Function to get 1 column from the cached result set based in X index
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// se docs for usage and info
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function get_col($query = null , $x = 0) {
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if ( $query )
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$this->query($query);
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// Extract the column values
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for ( $i=0; $i < count($this->last_result); $i++ ) {
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$new_array[$i] = $this->get_var(null, $x, $i);
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}
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return $new_array;
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}
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// ==================================================================
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// Return the the query as a result set - see docs for more details
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function get_results($query = null, $output = OBJECT) {
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$this->func_call = "\$db->get_results(\"$query\", $output)";
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if ( $query )
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$this->query($query);
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// Send back array of objects. Each row is an object
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if ( $output == OBJECT ) {
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return $this->last_result;
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} elseif ( $output == ARRAY_A || $output == ARRAY_N ) {
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if ( $this->last_result ) {
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$i = 0;
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foreach( $this->last_result as $row ) {
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$new_array[$i] = (array) $row;
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if ( $output == ARRAY_N ) {
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$new_array[$i] = array_values($new_array[$i]);
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}
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$i++;
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}
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return $new_array;
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} else {
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return null;
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}
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}
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}
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// ==================================================================
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// Function to get column meta data info pertaining to the last query
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// see docs for more info and usage
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function get_col_info($info_type = 'name', $col_offset = -1) {
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if ( $this->col_info ) {
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if ( $col_offset == -1 ) {
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$i = 0;
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foreach($this->col_info as $col ) {
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$new_array[$i] = $col->{$info_type};
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$i++;
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}
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return $new_array;
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} else {
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return $this->col_info[$col_offset]->{$info_type};
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}
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}
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}
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}
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$wpdb = new wpdb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
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?>
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