Php 贝宝支付验证，IPN如何工作

我正在搜索如何使用贝宝IPN即时支付通知，从过去的两周，无法理解如何在我的代码中准确使用它

我正在使用下面的HTML代码创建一个PayPal按钮

button.html

下面的代码用于处理付款和验证付款

paypal.php

一个额外的类文件：可以在这里找到

代码运行良好，但我现在遇到了一个大问题，我正在尝试从以下行验证付款是否成功，并为会话中的用户向数据库添加10个信用

case 'success':      // Order was successful...

      echo "<br/><p><b>Payment Successful.</b><br /></p>";

      foreach ($_POST as $key => $value)

 { 

   /*echo "$key: $value<br>";*/
   // Do the required action, **add 10 credits in the database for the user on session**

 }      
      break;

最后，问题是当我点击button.html页面上的按钮时，它会重定向到Paypal.php页面，当我输入我的Paypal登录详细信息时，付款成功

有一个小的文本->返回到发件人的网站我需要点击它，当我点击它，它会带我回到PAYPAL.PHP页面，然后案例'成功'被解雇。如果我付款并关闭PAYPAL页面而不点击RETURN TO THE SENDER的网站，并且没有等到PAYPAL.PHP页面加载，网站就无法验证付款，也无法添加信用

如何在成功付款而不是成功返回PAYPAL.PHP页面时自动执行此过程并添加积分

---

谢谢

我觉得你把PDT和IPN搞混了。PDT的工作原理是将数据发送到您的返回URL，但这不是处理支付后处理任务的推荐方法

这就是IPN发挥作用的地方，它是将数据无声地发布到您的侦听器URL，而不管用户是否将其返回到您的返回URL。这样，不管怎样，只要所有配置都正确，代码都将始终运行

在我看来，你似乎在混合这两者，并因此得到了混合的结果

<?php
require_once('paypal.class.php');  // include the class file
$p = new paypal_class;             // initiate an instance of the class
$p->paypal_url = 'https://www.sandbox.paypal.com/cgi-bin/webscr';   // testing paypal url
//$p->paypal_url = 'https://www.paypal.com/cgi-bin/webscr';     // paypal url

// setup a variable for this script (ie: 'http://www.micahcarrick.com/paypal.php')
$this_script = 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'];

// if there is not action variable, set the default action of 'process'
if (empty($_GET['action'])) $_GET['action'] = 'process';  

switch ($_GET['action']) {

   case 'process':      // Process and order...

      $CatDescription = $_REQUEST['CatDescription'];
      $payment = $_REQUEST['payment'];
      $id = $_REQUEST['id'];
      $key = $_REQUEST['key'];

      $p->add_field('business', 'info@aoptrading.com');
      $p->add_field('return', $this_script.'?action=success');
      $p->add_field('cancel_return', $this_script.'?action=cancel');
      $p->add_field('notify_url', $this_script.'?action=ipn');
      $p->add_field('item_name', $CatDescription);
      $p->add_field('amount', $payment);
      $p->add_field('key', $key);
      $p->add_field('item_number', $id);


      $p->submit_paypal_post(); // submit the fields to paypal
      //$p->dump_fields();      // for debugging, output a table of all the fields
      break;

   case 'success':      // Order was successful...

      echo "<br/><p><b>Payment Successful.</b><br /></p>";

      foreach ($_POST as $key => $value) { echo "$key: $value<br>"; }      
      break;

   case 'cancel':       // Order was canceled...


      echo "<br/><p><b>The order was canceled!</b></p><br />";
    foreach ($_POST as $key => $value) { echo "$key: $value<br>"; }

      break;

   case 'ipn':          // Paypal is calling page for IPN validation...

      if ($p->validate_ipn()) { 

         // For this example, we'll just email ourselves ALL the data.
         $dated = date("D, d M Y H:i:s", time()); 

         $subject = 'Instant Payment Notification - Recieved Payment';
         $to = 'info@aoptrading.com';    //  your email
         $body =  "An instant payment notification was successfully recieved\n";
         $body .= "from ".$p->ipn_data['payer_email']." on ".date('m/d/Y');
         $body .= " at ".date('g:i A')."\n\nDetails:\n";
         $headers = "";
         $headers .= "From: Test Paypal \r\n";
         $headers .= "Date: $dated \r\n";

        $PaymentStatus =  $p->ipn_data['payment_status']; 
        $Email        =  $p->ipn_data['payer_email'];
        $id           =  $p->ipn_data['item_number'];

        if($PaymentStatus == 'Completed' or $PaymentStatus == 'Pending'){
            $PaymentStatus = '2';
        }else{
            $PaymentStatus = '1';
        }
        foreach ($p->ipn_data as $key => $value) { $body .= "\n$key: $value"; }
        fopen("http://www.virtualphoneline.com/admins/TestHMS.php?to=".urlencode($to)."&subject=".urlencode($subject)."&message=".urlencode($body)."&headers=".urlencode($headers)."","r");         
  } 
      break;
 }     
?>

case 'success':      // Order was successful...

      echo "<br/><p><b>Payment Successful.</b><br /></p>";

      foreach ($_POST as $key => $value)

 { 

   /*echo "$key: $value<br>";*/
   // Do the required action, **add 10 credits in the database for the user on session**

 }      
      break;