publish_post action doesn’t work

It’s never fired since the hook you need is not publish_post but publish_magazine which is actually {$new_status}_{$post_type} hook. So try publish_magazine

update: also you don’t need to use get_post since you the hook passes the $post object to the function as a second parameter. take a look at wp_transition_post_status()

and if that’s not working then you have something else going wrong.

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