是否可以将金额传回我的网站 [英] Is it possible to pass the amount back to my site

问题描述

我是 developer.paypal.com 的新手，我正在 www.sandbox.paypal.com 中创建一个订阅按钮，是否可以将客户支付的订阅金额传回我的网站或详细信息已经在 www.sandbox.paypal.com 上制作过吗?如果是的话，你能告诉我一些关于如何做到这一点的例子吗.

I am new to developer.paypal.com and i am creating a subscribe button in www.sandbox.paypal.com,is it possible to pass back the amount paid for the subscription by the customer to my website or the details that have been made in www.sandbox.paypal.com?if it is, can you show me some example on how to do this.

在我尝试订阅按钮后，这是返回的值，我在您提供的链接中找不到某些值.或者订阅变量如何显示它们?

after i tried the subscription button this are the value returned i could not find some value in the link that you provided.or the subscription variable how can i show them up?

我无法获得订阅的开始日期和结束日期谢谢.

I could not get the start date and the ending date of my subscription Thank you.

推荐答案

您可以通过以下两种方式之一执行此操作.付款完成后，您可以使用 IPN 或 PDT 将信息返回到您的站点.两种方式中较好的一种是使用 IPN，或者至少将 IPN 与 PDT 结合使用.

You could do this one of two ways. You could use IPN or PDT to return information to your site once a payment completes. The better of the two ways, would be to use IPN, or atleast use IPN in conjunction with PDT.

即时付款通知 (IPN)是一种消息服务，可通知您与 PayPal 交易相关的事件.您可以使用它来自动化后台和管理功能，例如履行订单、跟踪客户以及提供与交易相关的状态和其他信息.

Instant Payment Notification (IPN) is a message service that notifies you of events related to PayPal transactions. You can use it to automate back-office and administrative functions, such as fulfilling orders, tracking customers, and providing status and other information related to a transaction.

您可以在 IPN 页面这里找到更多信息.同样在该页面上，左侧还有一些有用的链接.有用于创建侦听器、设置、测试、IPN 历史记录、带有 FMF 的 IPN、IPN/PDT 变量和示例代码的页面 此处.还有一些此处的示例代码的示例.

You can find more on IPN the page here. Also on that page, off to the left hand side are some more links that are useful as well. There are pages for creating a listener, setup, testing, IPN history, IPN with FMF, IPN/PDT variables, and sample code here. There are also a few more examples of sample code here as well.

PayPal 的 PDT 系统发送订单确认到使用 PayPal Payments Standard 的商家网站，并让他们验证此信息.然后，此类站点可以在订单确认"页面中本地显示此数据.IPN 比 PDT 更可靠，而且对于 PDT，它依赖于买家单击按钮返回到您的站点.如果他们不单击按钮返回到您的站点，则不会发送任何信息，并且您无法像使用 IPN 一样重新发送此信息.您可以在此处找到有关 PDT 的更多信息.

PayPal’s PDT system sends order confirmations to merchant sites that use PayPal Payments Standard and lets them authenticate this information. Such sites can then display this data locally in an "order confirmation" page. IPN is more reliable than PDT, and also with PDT it is dependent on the buyer clicking a button to return to your site. If they they dont click on the button to return to your site, no information is sent back and you can not resend this information like you can with IPN. You can find more on PDT here.

我个人只使用 PDT 在我的网站上创建动态感谢页面，并使用 IPN 更新我的数据库和自动化一些任务.希望这可以帮助.:)

I personally only use PDT for crating a dynamic thank you page on my site, and use IPN for updating my database and automating some tasks. Hope this helps. :)

示例 PHP (v5.2) IPN 脚本

SAMPLE PHP (v5.2) IPN SCRIPT

<?php

// STEP 1: Read POST data

// reading posted data from directly from $_POST causes serialization 
// issues with array data in POST
// reading raw POST data from input stream instead. 
$raw_post_data = file_get_contents('php://input');
$raw_post_array = explode('&', $raw_post_data);
$myPost = array();
foreach ($raw_post_array as $keyval) {
  $keyval = explode ('=', $keyval);
  if (count($keyval) == 2)
     $myPost[$keyval[0]] = urldecode($keyval[1]);
}
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';
if(function_exists('get_magic_quotes_gpc')) {
   $get_magic_quotes_exists = true;
} 
foreach ($myPost as $key => $value) {        
   if($get_magic_quotes_exists == true && get_magic_quotes_gpc() == 1) { 
        $value = urlencode(stripslashes($value)); 
   } else {
        $value = urlencode($value);
   }
   $req .= "&$key=$value";
}


// STEP 2: Post IPN data back to paypal to validate

$ch = curl_init('https://www.paypal.com/cgi-bin/webscr');
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));

// In wamp like environments that do not come bundled with root authority certificates,
// please download 'cacert.pem' from "http://curl.haxx.se/docs/caextract.html" and set the directory path 
// of the certificate as shown below.
// curl_setopt($ch, CURLOPT_CAINFO, dirname(__FILE__) . '/cacert.pem');
if( !($res = curl_exec($ch)) ) {
    // error_log("Got " . curl_error($ch) . " when processing IPN data");
    curl_close($ch);
    exit;
}
curl_close($ch);


// STEP 3: Inspect IPN validation result and act accordingly

if (strcmp ($res, "VERIFIED") == 0) {
    // check whether the payment_status is Completed
    // check that txn_id has not been previously processed
    // check that receiver_email is your Primary PayPal email
    // check that payment_amount/payment_currency are correct
    // process payment

    // assign posted variables to local variables
    $item_name = $_POST['item_name'];
    $item_number = $_POST['item_number'];
    $payment_status = $_POST['payment_status'];
    $payment_amount = $_POST['mc_gross'];
    $payment_currency = $_POST['mc_currency'];
    $txn_id = $_POST['txn_id'];
    $receiver_email = $_POST['receiver_email'];
    $payer_email = $_POST['payer_email'];
} else if (strcmp ($res, "INVALID") == 0) {
    // log for manual investigation
}
?>

示例 PDT PHP (v5.3) 脚本

SAMPLE PDT PHP (v5.3) SCRIPT

<?php

$pp_hostname = "www.paypal.com"; // Change to www.sandbox.paypal.com to test against sandbox


// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-synch';

$tx_token = $_GET['tx'];
$auth_token = "GX_sTf5bW3wxRfFEbgofs88nQxvMQ7nsI8m21rzNESnl_79ccFTWj2aPgQ0";
$req .= "&tx=$tx_token&at=$auth_token";

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://$pp_hostname/cgi-bin/webscr");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
//set cacert.pem verisign certificate path in curl using 'CURLOPT_CAINFO' field here,
//if your server does not bundled with default verisign certificates.
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Host: $pp_hostname"));
$res = curl_exec($ch);
curl_close($ch);

if(!$res){
    //HTTP ERROR
}else{
     // parse the data
    $lines = explode("\n", $res);
    $keyarray = array();
    if (strcmp ($lines[0], "SUCCESS") == 0) {
        for ($i=1; $i<count($lines);$i++){
        list($key,$val) = explode("=", $lines[$i]);
        $keyarray[urldecode($key)] = urldecode($val);
    }
    // check the payment_status is Completed
    // check that txn_id has not been previously processed
    // check that receiver_email is your Primary PayPal email
    // check that payment_amount/payment_currency are correct
    // process payment
    $firstname = $keyarray['first_name'];
    $lastname = $keyarray['last_name'];
    $itemname = $keyarray['item_name'];
    $amount = $keyarray['payment_gross'];

    echo ("<p><h3>Thank you for your purchase!</h3></p>");

    echo ("<b>Payment Details</b><br>\n");
    echo ("<li>Name: $firstname $lastname</li>\n");
    echo ("<li>Item: $itemname</li>\n");
    echo ("<li>Amount: $amount</li>\n");
    echo ("");
    }
    else if (strcmp ($lines[0], "FAIL") == 0) {
        // log for manual investigation
    }
}

?>


Your transaction has been completed, and a receipt for your purchase has been emailed to you.<br> You may log into your account at <a href='https://www.paypal.com'>www.paypal.com</a> to view details of this transaction.<br>

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