mirror of
https://github.com/WordPress/WordPress.git
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01949a7967
git-svn-id: http://svn.automattic.com/wordpress/trunk@4208 1a063a9b-81f0-0310-95a4-ce76da25c4cd
371 lines
10 KiB
PHP
371 lines
10 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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var $queries;
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// Our tables
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var $posts;
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var $users;
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var $categories;
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var $post2cat;
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var $comments;
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var $links;
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var $linkcategories;
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var $options;
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var $optiontypes;
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var $optionvalues;
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var $optiongroups;
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var $optiongroup_options;
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var $postmeta;
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// ==================================================================
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// DB Constructor - connects to the server and selects a database
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function wpdb($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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$this->bail("
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<h1>Error establishing a database connection</h1>
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<p>This either means that the username and password information in your <code>wp-config.php</code> file is incorrect or we can't contact the database server at <code>$dbhost</code>. This could mean your host's database server is down.</p>
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<ul>
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<li>Are you sure you have the correct username and 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>If you're unsure what these terms mean you should probably contact your host. If you still need help you can always visit the <a href='http://wordpress.org/support/'>WordPress Support Forums</a>.</p>
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");
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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, $this->dbh)) {
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$this->bail("
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<h1>Can’t select database</h1>
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<p>We were able to connect to the database server (which means your username and password is okay) but not able to select the <code>$db</code> database.</p>
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<ul>
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<li>Are you sure it exists?</li>
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<li>On some systems the name of your database is prefixed with your username, so it would be like username_wordpress. Could that be the problem?</li>
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</ul>
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<p>If you don't know how to setup a database you should <strong>contact your host</strong>. If all else fails you may find help at the <a href='http://wordpress.org/support/'>WordPress Support Forums</a>.</p>");
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}
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}
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// ====================================================================
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// Format a string correctly for safe insert under all PHP conditions
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function escape($string) {
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return addslashes( $string ); // Disable rest for now, causing problems
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if( !$this->dbh || version_compare( phpversion(), '4.3.0' ) == '-1' )
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return mysql_escape_string( $string );
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else
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return mysql_real_escape_string( $string, $this->dbh );
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}
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// ==================================================================
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// Print SQL/DB error.
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function print_error($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' => $str);
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$str = htmlspecialchars($str, ENT_QUOTES);
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$query = htmlspecialchars($this->last_query, ENT_QUOTES);
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// Is error output turned on or not..
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if ( $this->show_errors ) {
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// If there is an error then take note of it
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print "<div id='error'>
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<p class='wpdberror'><strong>WordPress database error:</strong> [$str]<br />
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<code>$query</code></p>
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</div>";
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} else {
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return false;
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}
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}
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// ==================================================================
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// Turn error handling on or off..
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function show_errors() {
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$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 = array();
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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 = $query;
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// Perform the query via std mysql_query function..
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if (SAVEQUERIES)
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$this->timer_start();
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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->queries[] = array( $query, $this->timer_stop() );
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// If there is an error then take note of it..
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if ( mysql_error() ) {
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$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($query);
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if ( !isset($this->last_result[$y]) )
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return null;
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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]->{$info_type};
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}
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}
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}
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function timer_start() {
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$mtime = microtime();
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$mtime = explode(' ', $mtime);
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$this->time_start = $mtime[1] + $mtime[0];
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return true;
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}
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function timer_stop($precision = 3) {
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$mtime = microtime();
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$mtime = explode(' ', $mtime);
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$time_end = $mtime[1] + $mtime[0];
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$time_total = $time_end - $this->time_start;
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return $time_total;
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}
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function bail($message) { // Just wraps errors in a nice header and footer
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if ( !$this->show_errors )
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return false;
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header('Content-Type: text/html; charset=utf-8');
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?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>WordPress › Error</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<style media="screen" type="text/css">
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<!--
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html {
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background: #eee;
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}
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body {
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background: #fff;
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color: #000;
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font-family: Georgia, "Times New Roman", Times, serif;
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margin-left: 25%;
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margin-right: 25%;
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padding: .2em 2em;
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}
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h1 {
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color: #006;
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font-size: 18px;
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font-weight: lighter;
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}
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h2 {
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font-size: 16px;
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}
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p, li, dt {
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line-height: 140%;
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padding-bottom: 2px;
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}
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ul, ol {
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padding: 5px 5px 5px 20px;
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}
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#logo {
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margin-bottom: 2em;
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}
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-->
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</style>
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</head>
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<body>
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<h1 id="logo"><img alt="WordPress" src="<?php echo 'wp-admin/images/wordpress-logo.png' ?>" /></h1>
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<p><?php echo $message; ?></p>
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</body>
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</html>
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<?php
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die();
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}
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}
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if ( ! isset($wpdb) )
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$wpdb = new wpdb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
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?>
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