public function print_vars($vars)
    {
        $this->last_selector = null;

        $args = array();
        foreach (func_get_args() as $name => $arg) {
            if (is_object($arg)) {
                $arg = get_object_vars($arg);
            }
            $args[$name] = array(var_export($arg, true));
        }

        return $this->cmd(6, $args);
    }