public static function setOrder(Order $order)
 {
     $query = "INSERT INTO commandes (prix, id_user)\n\t\t\tVALUES ('" . $order->getPrice() . "','" . $order->getIdUser() . "')";
     DBOperation::exec($query);
     $lastId = DBOperation::getLastId();
     foreach ($_SESSION["cart"] as $product) {
         $query = "INSERT INTO produits_commandes (id_produit, id_commande, quantity)\n\t\t\t\tVALUES ('" . $product->getId() . "','" . $lastId . "','" . $product->getQuantity() . "')";
         DBOperation::exec($query);
     }
 }
 private static function convertToObject($aOrder)
 {
     $oOrder = new Order();
     $oOrder->setId($aOrder['id']);
     $oOrder->setEmail($aOrder['user_email']);
     $oOrder->setDate($aOrder['date']);
     $oOrder->setTotal($aOrder['total']);
     return $oOrder;
 }