Changes from trunk/wp-includes/wp-db.php at r17079 to branches/3.0/wp-includes/wp-db.php at r15470

File:

• branches/3.0/wp-includes/wp-db.php (modified) (21 diffs)

branches/3.0/wp-includes/wp-db.php

@@ -49 +49 @@
  * @subpackage Database
  * @since 0.71
+ * @final
  */
 class wpdb {
@@ -65 +66 @@
          *
          * @access private
-         * @since 2.5.0
+         * @since 2.5
          * @var bool
          */
@@ -74 +75 @@
          *
          * @see get_last_error()
-         * @since 2.5.0
+         * @since 2.5
          * @access private
          * @var string
@@ -92 +93 @@
          * Count of rows returned by previous query
          *
-         * @since 1.2.0
+         * @since 1.2
          * @access private
          * @var int
@@ -456 +457 @@
          * A textual description of the last query/get_row/get_var call
          *
-         * @since 3.0.0
+         * @since unknown
          * @access public
          * @var string
@@ -476 +477 @@
          */
         function wpdb( $dbuser, $dbpassword, $dbname, $dbhost ) {
+                if( defined( 'WP_USE_MULTIPLE_DB' ) && WP_USE_MULTIPLE_DB )
+                        $this->db_connect();
                 return $this->__construct( $dbuser, $dbpassword, $dbname, $dbhost );
         }
@@ -500 +503 @@
                         $this->show_errors();
 
-                $this->init_charset();
-
-                $this->dbuser = $dbuser;
-                $this->dbpassword = $dbpassword;
-                $this->dbname = $dbname;
-                $this->dbhost = $dbhost;
-
-                $this->db_connect();
-        }
-
-        /**
-         * PHP5 style destructor and will run when database object is destroyed.
-         *
-         * @see wpdb::__construct()
-         * @since 2.0.8
-         * @return bool true
-         */
-        function __destruct() {
-                return true;
-        }
-
-        /**
-         * Set $this->charset and $this->collate
-         *
-         * @since 3.1.0
-         */
-        function init_charset() {
-                if ( function_exists('is_multisite') && is_multisite() ) {
+                if ( is_multisite() ) {
                         $this->charset = 'utf8';
                         if ( defined( 'DB_COLLATE' ) && DB_COLLATE )
@@ -539 +515 @@
                 if ( defined( 'DB_CHARSET' ) )
                         $this->charset = DB_CHARSET;
-        }
-
-        /**
-         * Sets the connection's character set.
-         *
-         * @since 3.1.0
-         *
-         * @param resource $dbh     The resource given by mysql_connect
-         * @param string   $charset The character set (optional)
-         * @param string   $collate The collation (optional)
-         */
-        function set_charset($dbh, $charset = null, $collate = null) {
-                if ( !isset($charset) )
-                        $charset = $this->charset;
-                if ( !isset($collate) )
-                        $collate = $this->collate;
-                if ( $this->has_cap( 'collation', $dbh ) && !empty( $charset ) ) {
-                        if ( function_exists( 'mysql_set_charset' ) && $this->has_cap( 'set_charset', $dbh ) ) {
-                                mysql_set_charset( $charset, $dbh );
+
+                $this->dbuser = $dbuser;
+
+                $this->dbh = @mysql_connect( $dbhost, $dbuser, $dbpassword, true );
+                if ( !$this->dbh ) {
+                        $this->bail( sprintf( /*WP_I18N_DB_CONN_ERROR*/"
+<h1>Error establishing a database connection</h1>
+<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>%s</code>. This could mean your host's database server is down.</p>
+<ul>
+        <li>Are you sure you have the correct username and password?</li>
+        <li>Are you sure that you have typed the correct hostname?</li>
+        <li>Are you sure that the database server is running?</li>
+</ul>
+<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>
+"/*/WP_I18N_DB_CONN_ERROR*/, $dbhost ), 'db_connect_fail' );
+                        return;
+                }
+
+                $this->ready = true;
+
+                if ( $this->has_cap( 'collation' ) && !empty( $this->charset ) ) {
+                        if ( function_exists( 'mysql_set_charset' ) ) {
+                                mysql_set_charset( $this->charset, $this->dbh );
                                 $this->real_escape = true;
                         } else {
-                                $query = $this->prepare( 'SET NAMES %s', $charset );
-                                if ( ! empty( $collate ) )
-                                        $query .= $this->prepare( ' COLLATE %s', $collate );
-                                mysql_query( $query, $dbh );
+                                $query = $this->prepare( 'SET NAMES %s', $this->charset );
+                                if ( ! empty( $this->collate ) )
+                                        $query .= $this->prepare( ' COLLATE %s', $this->collate );
+                                $this->query( $query );
                         }
                 }
+
+                $this->select( $dbname, $this->dbh );
+        }
+
+        /**
+         * PHP5 style destructor and will run when database object is destroyed.
+         *
+         * @see wpdb::__construct()
+         * @since 2.0.8
+         * @return bool true
+         */
+        function __destruct() {
+                return true;
         }
 
@@ -745 +738 @@
          */
         function select( $db, $dbh = null) {
-                if ( is_null($dbh) )
+                if ( is_null($dbh) ) 
                         $dbh = $this->dbh;
 
                 if ( !@mysql_select_db( $db, $dbh ) ) {
                         $this->ready = false;
-                        $this->bail( sprintf( /*WP_I18N_DB_SELECT_DB*/'<h1>Can&#8217;t select database</h1>
+                        $this->bail( sprintf( /*WP_I18N_DB_SELECT_DB*/'
+<h1>Can&#8217;t select database</h1>
 <p>We were able to connect to the database server (which means your username and password is okay) but not able to select the <code>%1$s</code> database.</p>
 <ul>
@@ -781 +775 @@
          * @see mysql_real_escape_string()
          * @see addslashes()
-         * @since 2.8.0
+         * @since 2.8
          * @access private
          *
@@ -797 +791 @@
          * Escape data. Works on arrays.
          *
-         * @uses wpdb::_escape()
-         * @uses wpdb::_real_escape()
-         * @since  2.8.0
+     * @uses wpdb::_escape()
+     * @uses wpdb::_real_escape()
+         * @since  2.8
          * @access private
          *
@@ -1002 +996 @@
          * call to this function they can be enabled.
          *
-         * @since 2.5.0
+         * @since 2.5
          * @see wpdb::hide_errors()
          * @param bool $suppress Optional. New value. Defaults to true.
@@ -1025 +1019 @@
         }
 
-        /**
-         * Connect to and select database
-         *
-         * @since 3.0.0
-         */
-        function db_connect() {
+        function db_connect( $query = "SELECT" ) {
                 global $db_list, $global_db_list;
-
-                if ( WP_DEBUG ) {
-                        $this->dbh = mysql_connect( $this->dbhost, $this->dbuser, $this->dbpassword, true );
+                if ( ! is_array( $db_list ) )
+                        return true;
+
+                if ( $this->blogs != '' && preg_match("/(" . $this->blogs . "|" . $this->users . "|" . $this->usermeta . "|" . $this->site . "|" . $this->sitemeta . "|" . $this->sitecategories . ")/i",$query) ) {
+                        $action = 'global';
+                        $details = $global_db_list[ mt_rand( 0, count( $global_db_list ) -1 ) ];
+                        $this->db_global = $details;
+                } elseif ( preg_match("/^\\s*(alter table|create|insert|delete|update|replace) /i",$query) ) {
+                        $action = 'write';
+                        $details = $db_list[ 'write' ][ mt_rand( 0, count( $db_list[ 'write' ] ) -1 ) ];
+                        $this->db_write = $details;
                 } else {
-                        $this->dbh = @mysql_connect( $this->dbhost, $this->dbuser, $this->dbpassword, true );
-                }
-
-                if ( !$this->dbh ) {
+                        $action = '';
+                        $details = $db_list[ 'read' ][ mt_rand( 0, count( $db_list[ 'read' ] ) -1 ) ];
+                        $this->db_read = $details;
+                }
+
+                $dbhname = "dbh" . $action;
+                $this->$dbhname = @mysql_connect( $details[ 'db_host' ], $details[ 'db_user' ], $details[ 'db_password' ] );
+                if (!$this->$dbhname ) {
                         $this->bail( sprintf( /*WP_I18N_DB_CONN_ERROR*/"
 <h1>Error establishing a database connection</h1>
@@ -1049 +1050 @@
 </ul>
 <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>
-"/*/WP_I18N_DB_CONN_ERROR*/, $this->dbhost ), 'db_connect_fail' );
-
-                        // If show errors is disabled then we need to die anyway as we don't have a working DB connection
-                        // unless we're trying to test the initial connection, in which case setup-config.php will handle.
-                        if ( defined( 'WP_SETUP_CONFIG' ) )
-                                return;
-
-                        die();
-                }
-
-                $this->set_charset( $this->dbh );
-
-                $this->ready = true;
-
-                $this->select( $this->dbname, $this->dbh );
+"/*/WP_I18N_DB_CONN_ERROR*/, $details['db_host'] ), 'db_connect_fail' );
+                }
+                $this->select( $details[ 'db_name' ], $this->$dbhname );
         }
 
@@ -1096 +1085 @@
                         $this->timer_start();
 
-                $this->result = @mysql_query( $query, $this->dbh );
+                // use $this->dbh for read ops, and $this->dbhwrite for write ops
+                // use $this->dbhglobal for gloal table ops
+                unset( $dbh );
+                if( defined( 'WP_USE_MULTIPLE_DB' ) && WP_USE_MULTIPLE_DB ) {
+                        if( $this->blogs != '' && preg_match("/(" . $this->blogs . "|" . $this->users . "|" . $this->usermeta . "|" . $this->site . "|" . $this->sitemeta . "|" . $this->sitecategories . ")/i",$query) ) {
+                                if( false == isset( $this->dbhglobal ) ) {
+                                        $this->db_connect( $query );
+                                }
+                                $dbh =& $this->dbhglobal;
+                                $this->last_db_used = "global";
+                        } elseif ( preg_match("/^\\s*(alter table|create|insert|delete|update|replace) /i",$query) ) {
+                                if( false == isset( $this->dbhwrite ) ) {
+                                        $this->db_connect( $query );
+                                }
+                                $dbh =& $this->dbhwrite;
+                                $this->last_db_used = "write";
+                        } else {
+                                $dbh =& $this->dbh;
+                                $this->last_db_used = "read";
+                        }
+                } else {
+                        $dbh =& $this->dbh;
+                        $this->last_db_used = "other/read";
+                }
+
+                $this->result = @mysql_query( $query, $dbh );
                 $this->num_queries++;
 
@@ -1103 +1117 @@
 
                 // If there is an error then take note of it..
-                if ( $this->last_error = mysql_error( $this->dbh ) ) {
+                if ( $this->last_error = mysql_error( $dbh ) ) {
                         $this->print_error();
                         return false;
@@ -1109 +1123 @@
 
                 if ( preg_match( "/^\\s*(insert|delete|update|replace|alter) /i", $query ) ) {
-                        $this->rows_affected = mysql_affected_rows( $this->dbh );
+                        $this->rows_affected = mysql_affected_rows( $dbh );
                         // Take note of the insert_id
                         if ( preg_match( "/^\\s*(insert|replace) /i", $query ) ) {
-                                $this->insert_id = mysql_insert_id($this->dbh);
+                                $this->insert_id = mysql_insert_id($dbh);
                         }
                         // Return number of rows affected
@@ -1518 +1532 @@
          * Determine if a database supports a particular feature
          *
-         * @since 2.7.0
+         * @since 2.7
          * @see   wpdb::db_version()
          *
@@ -1532 +1546 @@
                         case 'subqueries' :   // @since 2.7
                                 return version_compare( $version, '4.1', '>=' );
-                        case 'set_charset' :
-                                return version_compare($version, '5.0.7', '>=');
                 };
 
@@ -1565 +1577 @@
          * The database version number.
          *
-         * @since 2.7.0
-         *
          * @return false|string false on failure, version number on success
          */
@@ -1574 +1584 @@
 }
 
+if ( ! isset( $wpdb ) ) {
+        /**
+         * WordPress Database Object, if it isn't set already in wp-content/db.php
+         * @global object $wpdb Creates a new wpdb object based on wp-config.php Constants for the database
+         * @since 0.71
+         */
+        $wpdb = new wpdb( DB_USER, DB_PASSWORD, DB_NAME, DB_HOST );
+}
 ?>