Order::pay PHP Method

    public function pay(Payment $payment, $paid = self::PAID_STATUS_PAID)
    {
        if ($this->isPaid()) {
            return true;
        }
        $this->setAttributes(['paid' => (int) $paid, 'payment_method_id' => $payment->id, 'payment_time' => new CDbExpression('NOW()')]);
        $result = $this->save();
        if ($result) {
            Yii::app()->eventManager->fire(OrderEvents::SUCCESS_PAID, new PayOrderEvent($this, $payment));
        } else {
            Yii::app()->eventManager->fire(OrderEvents::FAILURE_PAID, new PayOrderEvent($this, $payment));
        }
        return $result;
    }

 function add()
 {
     if (isset($_POST['products'])) {
         unset($_SESSION['Basket']);
         unset($_SESSION['Shipping']);
         $shipping = new StdClass();
         $shipping->first_name = $_POST['shipping']['first_name'];
         $shipping->last_name = $_POST['shipping']['last_name'];
         $shipping->address1 = $_POST['shipping']['address1'];
         $shipping->address2 = $_POST['shipping']['address2'];
         $shipping->city = $_POST['shipping']['city'];
         $shipping->state = $_POST['shipping']['state'];
         $shipping->zip = $_POST['shipping']['zip'];
         $shipping->country = $_POST['shipping']['country'];
         $shipping->phone = $_POST['shipping']['phone'];
         $shipping->email = $_POST['shipping']['email'];
         $shipping->method = $_POST['shipping']['method'];
         $shipping->company = $_POST['shipping']['company'];
         $billing = new StdClass();
         $billing->first_name = $_POST['billing']['first_name'];
         $billing->last_name = $_POST['billing']['last_name'];
         $billing->address1 = $_POST['billing']['address1'];
         $billing->address2 = $_POST['billing']['address2'];
         $billing->city = $_POST['billing']['city'];
         $billing->state = $_POST['billing']['state'];
         $billing->zip = $_POST['billing']['zip'];
         $billing->country = $_POST['billing']['country'];
         $billing->phone = $_POST['billing']['phone'];
         $billing->email = $_POST['billing']['email'];
         $billing->company = $_POST['billing']['company'];
         $payment = new StdClass();
         if (isset($_POST['order']['cc']) && $_POST['order']['cc'] == 'on') {
             $payment->method = $_POST['card']['type'] . ' Card';
             $payment->card = new StdClass();
             $payment->card->name = $_POST['card']['name'];
             $payment->card->type = $_POST['card']['type'];
             $payment->card->card_num = $_POST['card']['number'];
             $payment->card->exp_date = $_POST['card']['expdate_month'] . $_POST['card']['expdate_year'];
             $payment->card->cvv = $_POST['card']['verification'];
         } else {
             $payment->method = 'Backend creation with no card data';
         }
         $cart =& $this->getProducts();
         $customer = new StdClass();
         $customer->ip = '0.0.0.0';
         $customer->id = (int) $_POST['order']['user'];
         $order = new Order();
         $order->shipping = $shipping;
         $order->billing = $billing;
         $order->payment = $payment;
         $order->customer = $customer;
         $order->comment = $_POST['order']['comment'];
         $order->basket = $cart;
         if (isset($_POST['order']['discount']) && $_POST['order']['discount'] != '') {
             $order->setDiscount((int) $_POST['order']['discount']);
         }
         try {
             if (isset($payment->card)) {
                 $order->pay('Authorize');
             }
             $id = $order->create();
             $order->confirm();
             //$order->sendConfirmation($id);
             $cart->clear();
             url::redirect('/orders');
         } catch (Exception $e) {
             $this->error = $e->getMessage();
         }
     }
     $view = new View('admin');
     $view->header = new View('header');
     $view->content = new View('order_add');
     $view->footer = new View('footer');
     $view->header->title = 'Order >> Add';
     // string for variable $title in view header.php
     $view->footer->copyright = 'Copyright';
     // string for variable $copyright in view footer.php
     $view->render(TRUE);
 }