我正在尝试整合贝宝ipn到我的网站。我一直收到以下错误。我在这里束手无策。我遗漏了什么？

Question

我正在尝试整合贝宝ipn到我的网站。我一直收到以下错误。我在这里束手无策。我错过了什么？我猜我只是不理解为什么ipn.php页面看不到贝宝发送给POST变量的内容，或者这是问题所在吗？我已经做了一整天了，而且我对这个过程还很陌生，所以任何帮助都会很好！

INVALID
[2015-12-02 17:39 America/Denver] Invalid IPN: cmd=_notify-validate

下面是我的代码ipn.php

<?php
// CONFIG: Enable debug mode. This means we'll log requests into 'ipn.log' in the same directory.
// Especially useful if you encounter network errors or other intermittent problems with IPN (validation).
// Set this to 0 once you go live or don't require logging.
define("DEBUG", 1);
// Set to 0 once you're ready to go live
define("USE_SANDBOX", 1);
define("LOG_FILE", "./ipn.log");
// Read POST data
// reading posted data 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";
}
// Post IPN data back to PayPal to validate the IPN data is genuine
// Without this step anyone can fake IPN data
if(USE_SANDBOX == true) {
    $paypal_url = "https://www.sandbox.paypal.com/cgi-bin/webscr";
} else {
    $paypal_url = "https://www.paypal.com/cgi-bin/webscr";
}
$ch = curl_init($paypal_url);
if ($ch == FALSE) {
    return FALSE;
}
curl_setopt($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);
if(DEBUG == true) {
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLINFO_HEADER_OUT, 1);
}
// CONFIG: Optional proxy configuration
//curl_setopt($ch, CURLOPT_PROXY, $proxy);
//curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
// Set TCP timeout to 30 seconds
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));
// CONFIG: Please download 'cacert.pem' from "http://curl.haxx.se/docs/caextract.html" and set the directory path
// of the certificate as shown below. Ensure the file is readable by the webserver.
// This is mandatory for some environments.
//$cert = __DIR__ . "./cacert.pem";
//curl_setopt($ch, CURLOPT_CAINFO, $cert);
$res = curl_exec($ch);
if (curl_errno($ch) != 0) // cURL error
    {
    if(DEBUG == true) { 
        error_log(date('[Y-m-d H:i e] '). "Can't connect to PayPal to validate IPN message: " . curl_error($ch) . PHP_EOL, 3, LOG_FILE);
    }
    curl_close($ch);
    exit;
} else {
        // Log the entire HTTP response if debug is switched on.
        if(DEBUG == true) {
            error_log(date('[Y-m-d H:i e] '). "HTTP request of validation request:". curl_getinfo($ch, CURLINFO_HEADER_OUT) ." for IPN payload: $req" . PHP_EOL, 3, LOG_FILE);
            error_log(date('[Y-m-d H:i e] '). "HTTP response of validation request: $res" . PHP_EOL, 3, LOG_FILE);
        }
        curl_close($ch);
}
// Inspect IPN validation result and act accordingly
// Split response headers and payload, a better way for strcmp
$tokens = explode("\r\n\r\n", trim($res));
$res = trim(end($tokens));
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 PayPal email
    // check that payment_amount/payment_currency are correct
    // process payment and mark item as paid.
    // 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'];

    if(DEBUG == true) {
        error_log(date('[Y-m-d H:i e] '). "Verified IPN: $req ". PHP_EOL, 3, LOG_FILE);
    }
} else if (strcmp ($res, "INVALID") == 0) {
    // log for manual investigation
    // Add business logic here which deals with invalid IPN messages
    if(DEBUG == true) {
        error_log(date('[Y-m-d H:i e] '). "Invalid IPN: $req" . PHP_EOL, 3, LOG_FILE);
    }
}
?>

orderdetails.php

<?php
require 'ipn.php';

?>

<form target="_new" method="post" action="https://www.kathyhaggerty.info/Final/ipn.php">
<input type="hidden" name="SomePayPalVar" value="SomeValue1"/>
<input type="hidden" name="SomeOtherPPVar" value="SomeValue2"/>

<!-- code for other variables to be tested ... -->

<input type="submit"/>
</form>
<br />
Thank you for your payment. Your transaction has been completed, and a receipt for your purchase has been emailed to you. You may log into your account at <a href="http://www.sandbox.paypal.com/ie">www.sandbox.paypal.com/ie</a> to view details of this transaction.

index.php

<!-- INFO: The post URL "checkout.php" is invoked when clicked on "Pay with PayPal" button.-->
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
</head>

<body>
    <form action='checkout.php' METHOD='POST'>
    <input type='image' name='paypal_submit' id='paypal_submit'  src='https://www.paypal.com/en_US/i/btn/btn_dg_pay_w_paypal.gif' border='0' align='top' alt='Pay with PayPal'/>
</form>
</body>

<!-- Add Digital goods in-context experience. Ensure that this script is added before the closing of html body tag -->

<script src='https://www.paypalobjects.com/js/external/dg.js' type='text/javascript'></script>


<script>

    var dg = new PAYPAL.apps.DGFlow(
    {
        trigger: 'paypal_submit',
        expType: 'instant'
         //PayPal will decide the experience type for the buyer based on his/her 'Remember me on your computer' option.
    });

</script>

</html>

我不知所措！

Answer 1

这是一种不正确的IPN实现方式。

首先，由于您使用的是ExpressCheckout，您做过DoExpressCheckoutPayment接口调用吗？这是因为我在你的问题中看不到。

我假设orderdetails.php是您设置的返回URL，因为下面有一条谢谢您的消息。但是，我没有看到任何DoExpressCheckoutPayments被调用。

如果没有DoEC接口调用，交易将不会完成，您的IPN将永远无效。

如果您正在通过集成向导，您应该能够到达步骤4:支付，它给您的整个代码作为orderconfirm.php，这是完整的代码，您应该如何实现DoEC应用编程接口调用。

这是必须完成并确保上述的，然后是你需要做的事情，让IPN工作：

关于IPN，可以在DoEC接口调用中设置URL。

在orderconfirm.php中，找到代码块并插入$ipnUrl，如下所示：

    //Format the  parameters that were stored or received from GetExperessCheckout call.
    $token              = $_REQUEST['token'];
    $payerID            = $_REQUEST['PayerID'];
    $paymentType        = 'Sale';
    $currencyCodeType   = $res['CURRENCYCODE'];
    $ipnUrl             = 'https://www.kathyhaggerty.info/Final/ipn.php'; 
    $items = array();
    $i = 0;
    // adding item details those set in setExpressCheckout
    while(isset($res["L_PAYMENTREQUEST_0_NAME$i"]))
    {
        $items[] = array('name' => $res["L_PAYMENTREQUEST_0_NAME$i"], 'amt' => $res["L_PAYMENTREQUEST_0_AMT$i"], 'qty' => $res["L_PAYMENTREQUEST_0_QTY$i"]);
        $i++;
    }

    $resArray = ConfirmPayment ( $token, $paymentType, $currencyCodeType, $payerID, $finalPaymentAmount, $items, $ipnUrl );
    $ack = strtoupper($resArray["ACK"]);

之后，转到您的paypalfunctions.php，找到函数ConfirmPayment，然后编辑下面的代码(或者您可以用我的函数替换整个ConfirmPayment函数)：

function ConfirmPayment( $token, $paymentType, $currencyCodeType, $payerID, $FinalPaymentAmt, $items, $ipnUrl )
    {
        /* Gather the information to make the final call to
           finalize the PayPal payment.  The variable nvpstr
           holds the name value pairs
           */
        $token              = urlencode($token);
        $paymentType        = urlencode($paymentType);
        $currencyCodeType   = urlencode($currencyCodeType);
        $payerID            = urlencode($payerID);
        $serverName         = urlencode($_SERVER['SERVER_NAME']);
        $ipnUrl         = urlencode($ipnUrl);

    $nvpstr  = '&TOKEN=' . $token . '&PAYERID=' . $payerID . '&PAYMENTREQUEST_0_PAYMENTACTION=' . $paymentType . '&PAYMENTREQUEST_0_AMT=' . $FinalPaymentAmt . '&PAYMENTREQUEST_0_NOTIFYURL=' . $ipnUrl;
        $nvpstr .= '&PAYMENTREQUEST_0_CURRENCYCODE=' . $currencyCodeType . '&IPADDRESS=' . $serverName; 

        foreach($items as $index => $item) {

            $nvpstr .= "&L_PAYMENTREQUEST_0_NAME" . $index . "=" . urlencode($item["name"]);
            $nvpstr .= "&L_PAYMENTREQUEST_0_AMT" . $index . "=" . urlencode($item["amt"]);
            $nvpstr .= "&L_PAYMENTREQUEST_0_QTY" . $index . "=" . urlencode($item["qty"]);
            $nvpstr .= "&L_PAYMENTREQUEST_0_ITEMCATEGORY" . $index . "=Digital";
        }
         /* Make the call to PayPal to finalize payment
            If an error occured, show the resulting errors
            */
        $resArray=hash_call("DoExpressCheckoutPayment",$nvpstr);

        /* Display the API response back to the browser.
           If the response from PayPal was a success, display the response parameters'
           If the response was an error, display the errors received using APIError.php.
           */
        $ack = strtoupper($resArray["ACK"]);

        return $resArray;
    }

完成后，将每个文件放在一起，如果一切正常，IPN应该会在完成支付时自动触发(在orderconfirm.php中调用DoExpressCheckoutPayment接口后)。