Custom Comment Notifications Fire on each Page Load

well, single.php is the template that’s loaded whenever you visit a page. And since you call comment_notification() there it’s only logical that a notification is sent.

You should remove that code from single.php. Hooking into comment_post should be enough.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)