query("INSERT IGNORE INTO subscribed_forums (ForumID, SubscriberID) VALUES ('$ForumID', '$LoggedUser[ID]')"); } elseif ($_GET['perform'] == 'remove') { $DB->query("DELETE FROM subscribed_forums WHERE ForumID = '$ForumID' AND SubscriberID = '$LoggedUser[ID]'"); } header('Location: forums.php?action=viewforum&forumid=' . $ForumID); ?>