zen_cart实现支付前生成订单的方法

本文实例讲述了zen_cart实现支付前生成订单的方法。分享给大家供大家参考，具体如下：

除了paypal之外. 客户通过其他的支付方式进入index.php?main_page=checkout_confirmation这个页面就能生出订单.
但是!! paypal就有点与众不同, 它只能是从它的官网 [paypal.com] 返回来并且进入checkout_process这个页面后,才能生出订单

而意外常会发生:比如网络不顺. 又比如客户不小心在返回前就关了页面.

那么,我们的网站后台就看不到客户买的是什么产品(虽然在paypal后台能看到是谁买了,但确实是无法知道他到底买了什么,)这可是一个好郁闷的事情

paypal防漏单的原理就是------在 checkout_confirmation.php这个页面先生出订单!!!

方法是：在这个文件的最后部分

echo TITLE_CONTINUE_CHECKOUT_PROCEDURE . '<br />' . TEXT_CONTINUE_CHECKOUT_PROCEDURE;

后面添加代码：

// create the order record 防漏单 
if ($_SESSION['payment'] == 'paypal') { 
$insert_id = $order->create($order_totals, 2);
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_CREATE');
$payment_modules->after_order_create($insert_id);
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_PAYMENT_MODULES_AFTER_ORDER_CREATE');
// store the product info to the order
$order->create_add_products($insert_id);
$_SESSION['order_number_created'] = $insert_id;

为了避免对其他支付方式产生影响，代码做了个判断，只有paypal支付会运行这些生成订单的代码，加了这段后就不用担心会漏单了。

如果需要更完美的做法,为防止顾客在访问checkout process的时候会重复生成订单, 那么就需要加个判断

if($_SESSION['payment']!='paypal'){
/*// create the order record
$insert_id = $order->create($order_totals, 2);
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_CREATE');
$payment_modules->after_order_create($insert_id);
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_PAYMENT_MODULES_AFTER_ORDER_CREATE');
// store the product info to the order
$order->create_add_products($insert_id);
$_SESSION['order_number_created'] = $insert_id;
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_CREATE_ADD_PRODUCTS');
//send email notifications
$order->send_order_email($insert_id, 2);
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_SEND_ORDER_EMAIL');*/
}

而且在确认页面，如果顾客一直刷新页面，就会一直生成订单，可以加个限制.

// create the order record 防漏单
if ($_SESSION['payment'] == 'paypal' and !isset($_SESSION['order_number_created'])) {
$insert_id = $order->create($order_totals, 2);
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_CREATE');
$payment_modules->after_order_create($insert_id);
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_PAYMENT_MODULES_AFTER_ORDER_CREATE');
// store the product info to the order
$order->create_add_products($insert_id);
$_SESSION['order_number_created'] = $insert_id;
}

在pages/checkout_payment/header_php.php任意位置加上

unset($_SESSION['order_number_created']);

这样,就算顾客在确认页面一直刷新，因为已经设置了

$_SESSION['order_number_created']

订单不再生成，

如果顾客返回修改了购物车，再次到达checkout_payment时$_SESSION['order_number_created']将被清除，

其实，生成订单的代码可以写在modules/payment/paypal.php的 function confirmation()中。

代码如下：

function confirmation() {
if(!isset($_SESSION['order_number_created']))
{
global $order,$order_total_modules,$order_totals,$zco_notifier,$insert_id; 
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_BEGIN'); // if the customer is not logged on, redirect them to the time out page
if (!$_SESSION['customer_id']) 
{ 
zen_redirect(zen_href_link(FILENAME_TIME_OUT)); 
} 
else 
{ // validate customer 
if (zen_get_customer_validate_session($_SESSION['customer_id']) == false) 
{ 
$_SESSION['navigation']->set_snapshot(array('mode' => 'SSL', 'page' => FILENAME_CHECKOUT_SHIPPING));
zen_redirect(zen_href_link(FILENAME_LOGIN, '', 'SSL')); 
} 
} 
if(isset($mycartID)&&$mycartID == $_SESSION['cart']->cartID)
{ 
return array('title' => MODULE_PAYMENT_PAYPAL_TEXT_DESCRIPTION); 
} 
$mycartID = $_SESSION['cart']->cartID; 
$order = new order; // prevent 0-entry orders from being generated/spoofed 
if (sizeof($order->products) < 1) 
{ 
zen_redirect(zen_href_link(FILENAME_SHOPPING_CART)); 
} 
$order_total_modules = new order_total; 
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_BEFORE_ORDER_TOTALS_PRE_CONFIRMATION_CHECK');
//$order_totals = $order_total_modules->pre_confirmation_check(); 
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_BEFORE_ORDER_TOTALS_PROCESS'); 
$order_totals = $order_total_modules->process(); 
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_TOTALS_PROCESS'); 
if (!isset($_SESSION['payment']) && !$credit_covers) 
{ 
zen_redirect(zen_href_link(FILENAME_DEFAULT)); 
} // load the before_process
// load the before_process function from the payment modules 
//$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_PAYMENT_MODULES_BEFOREPROCESS');
// create the order record 
$insert_id = $order->create($order_totals, 2); 
require(DIR_WS_LANGUAGES.'english/email_extras.php'); 
require(DIR_WS_LANGUAGES.'english/checkout_process.php'); 
// store the product info to the order 
$order->create_add_products($insert_id); 
$_SESSION['order_number_created'] = $insert_id; 
$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_CREATE_ADD_PRODUCTS');
$order->send_order_email($insert_id, 2);
if (is_array($order_total_modules->modules)) 
{
reset($order_total_modules->modules);
while (list(, $value) = each($order_total_modules->modules)) 
{
$class = substr($value, 0, strrpos($value, '.'));
if (!isset($GLOBALS[$class])) continue;
$GLOBALS[$class]->output=null;
}
}
}
else 
return false;
}

希望本文所述对大家基于zend框架的PHP程序设计有所帮助。