public static function C($key, $type = 'int')
 {
     if (self::$_prefix == '') {
         self::$_prefix = substr(md5(DB_PREFIX), 0, 8);
     }
     return self::GPCS(isset($_COOKIE[self::$_prefix . $key]) ? $_COOKIE[self::$_prefix . $key] : NULL, $type);
 }