$this->load->library("notification");

$notifitems = gather_info_notif($uid,$token);
$this->notification->initialize($notifitems['user_info'],$notifitems['loc_info']);

//order
$this->notification->item_ordered($user_id,$order_id);

//order shipped
$this->notification->item_shipped($user_id,$order_id)

//order cancelled
$this->notification->item_cancelled($user_id,$order_id)

//order completed
$this->notification->order_completed($user_id,$order_id)