Change status of a Prestashop order using a php script

I need a php script that change status of a Prestashop order. It is, that use the function to change status (adding a new status really, coz when you change status manually, really is adding a new status for this order. And if you do it manually, then, a mail is sent to customer depends on what status you putted. Then, i need that email will be sent too, like when you change status manually. I need to send the number of order and status code by url, for example: [login to view URL] I found on google this script, but a person on a forum says that no works correctly (but i don't test it): public function hookOrderConfirmation($params) { .... $objOrder = $params['objOrder']; $history = new OrderHistory(); $history->id_order = (int)$objOrder->id; $history->changeIdOrderState((int)(Configuration::get($this->name.'_status_id')), (int)($objOrder->id)); .... } Only bid if you can do this php script by 20 usd. Thank you!