Security::checkInt()

classes/security.class.php

      * Makes sure a number ID is valid,
      * e.g., a page ID requested by GET.
      */
-    public function checkInt($ID)
-    #public function checkInt(int|array $ID) # Union types need PHP 8 - unbelievable!
+    public function checkInt(...$IDs)
     {
-        # Cast single ID to array
-        if (!is_array($ID)) {
-            $ID = [$ID];
-        }
-
-        # Check each ID supplied
-        foreach ($ID as $ID) {
+        foreach ($IDs as $ID) {
             if (!ID || !is_int($ID) || $ID < 1) {
                 error(400);
             }

sections/torrents/nonwikiedit.php

 <?php
 declare(strict_types=1);
 
-Security::checkInt($_POST['groupid']);
 authorize();
 
+$GroupID = (int) $_GET['groupid'];
+Security::checkInt($GroupID);
+
 // Usual perm checks
 if (!check_perms('torrents_edit')) {
     $DB->query("

sections/torrents/takegroupedit.php

 # Variables for database input
 $user_id = (int) $LoggedUser['ID'];
 $group_id = (int) $_REQUEST['groupid'];
-Security::checkInt([$user_id, $group_id]);
+Security::checkInt($user_id, $group_id);
 
 # If we're reverting to a previous revision
 if (!empty($_GET['action']) && $_GET['action'] === 'revert') {