/** * Retrieves database client/server protocol version. * @param resource $connection (optional) The database server connection, for detailed description see the method query(). * @return int/boolean Returns the protocol version on success or FALSE on failure. */ public function get_proto_info($connection = null) { return self::use_default_connection($connection) ? mysqli::mysqli_get_proto_info() : mysqli::mysqli_get_proto_info($connection); }