/modules/wordpress/wp-includes/wp-db.php
PHP | 341 lines | 216 code | 50 blank | 75 comment | 49 complexity | a8959171bd2d8d1a5d6352590b4a5243 MD5 | raw file
- <?php
- if( ! defined( 'WP_WP_DB_INCLUDED' ) ) {
- define( 'WP_WP_DB_INCLUDED' , 1 ) ;
- // ==================================================================
- // Author: Justin Vincent (justin@visunet.ie)
- // Web: http://php.justinvincent.com
- // Name: ezSQL
- // Desc: Class to make it very easy to deal with mySQL database connections.
- // WordPress is using this class to make the code cleaner and faster.
- // We highly recommend it.
- // We have modified the HTML it returns slightly.
- define('EZSQL_VERSION', '1.21');
- define('OBJECT', 'OBJECT', true);
- define('ARRAY_A', 'ARRAY_A', true);
- define('ARRAY_N', 'ARRAY_N', true);
- define('SAVEQUERIES', true);
- // The Main Class, renamed to avoid conflicts.
- class wpdb {
- var $debug_called;
- var $vardump_called;
- var $show_errors = true;
- var $querycount;
- // Our tables
- var $posts;
- var $users;
- var $categories;
- var $post2cat;
- var $comments;
- var $links;
- var $linkcategories;
- var $options;
- var $optiontypes;
- var $optionvalues;
- var $optiongroups;
- var $optiongroup_options;
- var $fp;
- // ==================================================================
- // DB Constructor - connects to the server and selects a database
- function wpdb($dbuser, $dbpassword, $dbname, $dbhost) {
- if (isset($GLOBALS['xoopsDB'])) {
- $this->dbh =& $GLOBALS['xoopsDB']->conn;
- $this->querycount = 0;
- } else {
- $this->dbh = @mysql_connect($dbhost,$dbuser,$dbpassword);
- if ( ! $this->dbh ) {
- die("<div>
- <p>" . _LANG_WA_WPDB_GUIDE1 . "</p>
- <ul>
- <li>" . _LANG_WA_WPDB_GUIDE2 . "</li>
- <li>" . _LANG_WA_WPDB_GUIDE3 . "</li>
- <li>" . _LANG_WA_WPDB_GUIDE4 . "</li>
- </ul>
- <p><a href='http://wordpress.xwd.jp/'>WordPress Japan</a></p>
- </div></body></html>");
- }
- $this->select($dbname);
- $this->querycount = 0;
- }
- }
- // ==================================================================
- // Select a DB (if another one needs to be selected)
- function select($db) {
- if ( !@mysql_select_db($db,$this->dbh)) {
- die("
- <p>We're having a little trouble selecting the proper database for WordPress.</p>
- <ul>
- <li>Are you sure it exists?</li>
- <li>Your database name is currently specified as <code>" . WP_DB_NAME ."</code>. Is this correct?</li>
- <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>
- </ul>
- <p><a href='http://wordpress.xwd.jp/'>WordPress Japan</a></p>");
- }
- }
- // ====================================================================
- // Format a string correctly for safe insert under all PHP conditions
-
- function escape($str)
- {
- return mysql_escape_string(stripslashes($str));
- }
- // ==================================================================
- // Print SQL/DB error.
- function print_error($str = '') {
- // All errors go to the global error array $EZSQL_ERROR..
- global $EZSQL_ERROR;
- // If no special error string then use mysql default..
- if ( !$str ) $str = mysql_error();
-
- // Log this error to the global array..
- $EZSQL_ERROR[] = array (
- 'query' => $this->last_query,
- 'error_str' => $str
- );
- // Is error output turned on or not..
- if ( $this->show_errors ) {
- // If there is an error then take note of it
- print "<div id='error'>
- <p><strong>SQL/DB Error:</strong><br />
- [<span style='color: #007;'>$str</span>]<br />
- <code>$this->last_query</code></p>
- </div>";
- } else {
- return false;
- }
- }
- // ==================================================================
- // Turn error handling on or off..
- function show_errors() {
- $this->show_errors = true;
- }
-
- function hide_errors() {
- $this->show_errors = false;
- }
- // ==================================================================
- // Kill cached query results
- function flush() {
- $this->last_result = null;
- $this->col_info = null;
- $this->last_query = null;
- }
- // ==================================================================
- // Basic Query - see docs for more detail
- function query($query) {
- // Flush cached values..
- $this->flush();
- // Log how the function was called
- $this->func_call = "\$db->query(\"$query\")";
- // Keep track of the last query for debug..
- $this->last_query = $query;
- if (0 && $GLOBALS['wp_debug']) {
- $this->fp = fopen($GLOBALS['wp_base']['-'].'/log/wp-db.log', 'a');
- fwrite($this->fp, "$query\n");
- fclose($this->fp);
- }
- // Perform the query via std mysql_query function..
- $this->result = mysql_query($query, $this->dbh);
- ++$this->querycount;
- if (SAVEQUERIES) {
- $this->savedqueries[] = $query;
- }
- // If there was an insert, delete or update see how many rows were affected
- // (Also, If there there was an insert take note of the insert_id
- $query_type = array('insert','delete','update','replace');
- // loop through the above array
- foreach ( $query_type as $word ) {
- // This is true if the query starts with insert, delete or update
- if ( preg_match("/^\\s*$word /i",$query) ) {
- $this->rows_affected = mysql_affected_rows();
-
- // This gets the insert ID
- if ( $word == 'insert' || $word == 'replace' ) {
- $this->insert_id = mysql_insert_id($this->dbh);
- }
-
- $this->result = false;
- }
-
- }
-
- if ( mysql_error() ){
- // If there is an error then take note of it..
- $this->print_error();
- } else {
- // In other words if this was a select statement..
- if ( $this->result ) {
- // =======================================================
- // Take note of column info
- $i=0;
- while ($i < @mysql_num_fields($this->result)) {
- $this->col_info[$i] = @mysql_fetch_field($this->result);
- $i++;
- }
- // =======================================================
- // Store Query Results
- $i=0;
- while ( $row = @mysql_fetch_object($this->result) ) {
- // Store relults as an objects within main array
- $this->last_result[$i] = $row;
- $i++;
- }
- // Log number of rows the query returned
- $this->num_rows = $i;
- @mysql_free_result($this->result);
- // If there were results then return true for $db->query
- if ( $i ) {
- return true;
- } else {
- return false;
- }
- } else {
- // Update insert etc. was good..
- return true;
- }
- }
- }
- // ==================================================================
- // Get one variable from the DB - see docs for more detail
- function get_var($query=null, $x=0, $y=0) {
- // Log how the function was called
- $this->func_call = "\$db->get_var(\"$query\",$x,$y)";
- // If there is a query then perform it if not then use cached results..
- if ( $query ) {
- $this->query($query);
- }
- // Extract var out of cached results based x,y vals
- if ( $this->last_result[$y] ) {
- $values = array_values(get_object_vars($this->last_result[$y]));
- }
- // If there is a value return it else return null
- return (isset($values[$x]) && $values[$x]!=='')?$values[$x]:null;
- }
- // ==================================================================
- // Get one row from the DB - see docs for more detail
- function get_row($query=null, $output=OBJECT, $y=0) {
- // Log how the function was called
- $this->func_call = "\$db->get_row(\"$query\",$output,$y)";
- // If there is a query then perform it if not then use cached results..
- if ( $query ) {
- $this->query($query);
- }
- // If the output is an object then return object using the row offset..
- if ( $output == OBJECT ) {
- return $this->last_result[$y]?$this->last_result[$y]:null;
- // If the output is an associative array then return row as such..
- } elseif ( $output == ARRAY_A ) {
- return $this->last_result[$y]?get_object_vars($this->last_result[$y]):null;
- // If the output is an numerical array then return row as such..
- } elseif ( $output == ARRAY_N ) {
- return $this->last_result[$y]?array_values(get_object_vars($this->last_result[$y])):null;
- // If invalid output type was specified..
- } else {
- $this->print_error(" \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N");
- }
- }
- // ==================================================================
- // Function to get 1 column from the cached result set based in X index
- // se docs for usage and info
- function get_col($query=null,$x=0) {
- // If there is a query then perform it if not then use cached results..
- if ( $query ) {
- $this->query($query);
- }
- // Extract the column values
- for ( $i=0; $i < count($this->last_result); $i++ ) {
- $new_array[$i] = $this->get_var(null,$x,$i);
- }
- return $new_array;
- }
- // ==================================================================
- // Return the the query as a result set - see docs for more details
- function get_results($query=null, $output = OBJECT) {
- // Log how the function was called
- $this->func_call = "\$db->get_results(\"$query\", $output)";
- // If there is a query then perform it if not then use cached results..
- if ( $query ) {
- $this->query($query);
- }
- // Send back array of objects. Each row is an object
- if ( $output == OBJECT ) {
- return $this->last_result;
- } elseif ( $output == ARRAY_A || $output == ARRAY_N ) {
- if ( $this->last_result ) {
- $i=0;
- foreach( $this->last_result as $row ) {
- $new_array[$i] = get_object_vars($row);
- if ( $output == ARRAY_N ) {
- $new_array[$i] = array_values($new_array[$i]);
- }
- $i++;
- }
- return $new_array;
- } else {
- return null;
- }
- }
- }
- // ==================================================================
- // Function to get column meta data info pertaining to the last query
- // see docs for more info and usage
- function get_col_info($info_type='name', $col_offset=-1) {
- if ( $this->col_info ) {
- if ( $col_offset == -1 ) {
- $i=0;
- foreach($this->col_info as $col ) {
- $new_array[$i] = $col->{$info_type};
- $i++;
- }
- return $new_array;
- } else {
- return $this->col_info[$col_offset]->{$info_type};
- }
- }
- }
- }
- $wpdb = new wpdb(WP_DB_USER, WP_DB_PASSWORD, WP_DB_NAME, WP_DB_HOST);
- }
- ?>