fix update_info_by_keys

application/controllers/infofix.php

@@ -123,7 +123,9 @@ class infofix extends CI_Controller
       count($keyArr) != 4 ||
       mb_stripos($keys, '/') === false ||
       mb_stripos($keys, 'undefined') !== false ||
-      mb_stripos($keys, 'null') !== false
+      mb_stripos($keys, 'null') !== false ||
+      mb_stripos($keys, '@@') !== false ||
+      mb_stripos($keys, '@ @') !== false
     ) {
       echo json_encode(array());
       return false;