Ticket #27933: wp-db.php.4.patch

wp-includes/wp-db.php

@@ -1338 +1338 @@
                                 }
                         }
 
+                        // Persistent connections with mysqli are prepended with 'p:', supported on PHP5.3+
+                        if ( ! $new_link ) {
+                                if ( version_compare( phpversion(), '5.3.0', '>=' ) ) {
+                                        $host = "p:$host";
+                                } else {
+                                        _doing_it_wrong( 'wpdb::db_connect', __( 'Disabling MYSQL_NEW_LINK with MySQLi requires PHP 5.3 or later.' ), '3.9.1' );
+                                }
+                        }
+
                         if ( WP_DEBUG ) {
                                 mysqli_real_connect( $this->dbh, $host, $this->dbuser, $this->dbpassword, null, $port, $socket, $client_flags );
                         } else {