Adding data to options table
This is an expansion of my comment on OP: function is_forum_subscribed($user_ID) { if($user_ID) { $useremail = $this->get_userdata($user_ID, ‘user_email’); $list = get_option(“mf_forum_subscribers_”.$this->current_forum, array()); if(in_array($useremail, $list)) return true; } return false; } } You can call this function like this, instead: is_forum_subscribed($player->ID);