Review Code PHP for PrestaShop 1.7.x

Hi have a PHP Code to Create Cart and Order. Work in PrestaShop 1.6 but not in 1.7 you can review this code for work in 1.7 version This i the Code: $cart = new Cart(); $cart->id_customer = Tools::getValue('cliente'); $cart->id_address_delivery = Tools::getValue('indirizzo_consegna'); $cart->id_address_invoice = Tools::getValue('indirizzo_fatturazione'); $cart->id_lang = $default_lang; $cart->id_currency = $valuta; $cart->id_carrier = $corriere; $cart->add(); $cart = new Cart($cart->id); $idXfor = 0; foreach($_POST["prodotto"] as $prodotto) { $qta = $_POST["qta"][$idXfor]; //This code not work in 1.7 $cart->updateQty($qta, $prodotto, $id_product_attribute = null, $id_customization = false, $operator = 'up', $id_address_delivery = 0, $shop = null, $auto_add_cart_rule = true); $cart->update(); //End of code not work in 1.7 $idXfor = $idXfor+1; } $cart = new Cart($cart->id); //This code not work in 1.7 $total = $cart->getOrderTotal(true, Cart::BOTH); //End of code not work in 1.7 $customer = new Customer(Tools::getValue('cliente')); }