public static function fromDelete ($key, $default=null, $filter=null, $args=array())
    {
        if (!$key) {
            $values = array();
            parse_str (file_get_contents("php://input"), $values);
            return self::filterArray ($values, $filter, $args);
        }

        return self::getPassedValue ($key, $default, 'D', $filter, $args);
    }