在沙盒模式下处理多个项目时，我的IPN侦听器出现了一个非常奇怪的问题。
我已经使用IPN模拟器进行了测试，它工作正常，并且还可以使用购物车添加一个产品并且工作正常，但只要我将两个或更多不同的产品添加到购物车和流程中，IPN侦听器失败，日志中没有任何错误。
Paypal正在接收和发回所有正确的数据，因为我可以在测试沙盒帐户中看到交易详情，也可以看到脚本中的调试数据。
它基于官方的IPN Paypal脚本，但添加了发送的电子邮件通知程序。
<?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");
$mail = new PHPMailer;
$mail->isSMTP(); // Set mailer to use SMTP
$mail->Host = 'localhost'; // Specify main and backup server
$mail->SMTPAuth = true; // Enable SMTP authentication
$mail->Username = 'XXXXX'; // SMTP username
$mail->Password = 'XXXXX'; // SMTP password
$mail->From = 'XXXXX';
$mail->FromName = 'XXXXX';
$mail->addAddress('XXXXX', 'XXXXX'); // Add a recipient
$mail->WordWrap = 50; // Set word wrap to 50 characters
$mail->isHTML(true); // Set email format to HTML
// PayPal IPN posts transaction info to this script
// 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: $res" . PHP_EOL, 3, LOG_FILE);
// Split response headers and payload
list($headers, $res) = explode("\r\n\r\n", $res, 2);
}
curl_close($ch);
}
// 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 PayPal email
// check that payment_amount/payment_currency are correct
// process payment and mark item as paid.
// assign posted variables to local variables
$first_name = $_POST['first_name'];
$last_name = $_POST['last_name'];
$address_street = $_POST['address_street'];
$address_city = $_POST['address_city'];
$address_zip = $_POST['address_zip'];
$payment_status = $_POST['payment_status'];
$payment_amount = $_POST['mc_gross'];
$payment_currency = $_POST['mc_currency'];
$payer_email = urldecode ( $_POST['payer_email'] );
$shipping = $_POST['mc_shipping'];
$payment_date = $_POST['payment_date'];
$num_cart_items = $_POST['num_cart_items'];
//Redundant variables
//$item_name = $_POST['item_name1'];
//$item_number = $_POST['item_number'];
//$item_name1 = $_POST['item_name1'];
//$item_number1 = $_POST['item_number1'];
//$item_cost1 = $_POST['mc_gross1'];
//$quantity1 = $_POST['quantity1'];
/*
* Deduct VAT from a gross price
* Using 20 VAT
*/
$gross = $payment_amount;
$nett = $gross - (($gross*1)/6);
$nett = number_format($nett,2);
// gives 0.XX due to rounding
$table = "<table>
<tr >
<th colspan='2' scope='row' style='padding:0 30px'>
<h1 style='color:#333366'>INVOICE </h1>
<p style='color:#000'>Date added: $payment_date</p>
<p style='color:#000'> </p>
<h3 style='color:#333366'>Payment Details</h3>
<p style='color:#000'>Name: $first_name $last_name</p>
<p style='color:#000'>Address: $address_street, $address_city, $address_zip</p>
<p style='color:#000'>Payer email: $payer_email</p>
<p style='color:#000'> </p>
<h3 style='color:#333366'>Product Details</h3>";
for ($i = 1; $i <= $_POST['num_cart_items']; $i++) {
$table .= "<p>".$_POST['item_name' + $i]."</p>";
$table .= "<p>".$_POST['item_number' + $i]."</p>";
$table .= "<p>".$_POST['quantity' + $i]."</p>";
$table .= "<p>".$_POST['mc_gross_' + $i]."</p>";
}
$table .= "<p style='color:#000'>Delivery cost: £$shipping</p>
<p style='color:#000'>Net price: £$nett</p>
<p style='color:#000'>Gross price: £$payment_amount</p>
<p style='color:#000;font-size:11px'>VAT calculated at 20% </p>
</th>
</tr>
</table>";
$mail->Subject = 'Your Order';
$mail->Body = $table;
$mail->addAddress($payer_email, $first_name.' '.$last_name);
if(!$mail->send()) {
echo 'Message could not be sent.';
echo 'Mailer Error: ' . $mail->ErrorInfo;
exit;
}
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
$mail->Subject = 'Invalid';
$mail->Body = $table;
if(!$mail->send()) {
echo 'Message could not be sent.';
echo 'Mailer Error: ' . $mail->ErrorInfo;
exit;
}
if(DEBUG == true) {
error_log(date('[Y-m-d H:i e] '). "Invalid IPN: $req" . PHP_EOL, 3, LOG_FILE);
}
}
?>
答案 0 :(得分：5)
我终于解决了这个问题。问题在于卷曲设置。
多个产品的订单比单个产品的订单长得多。
curl设置为在数据超过一定长度时发送额外的标头（HTTP / 1.1 100继续）。
有一个简单的解决方法。
将'Expect：'添加为CURLOPT_HTTPHEADER数组的值。
所以：
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));
变为
curl_setopt($ch, CURLOPT_HTTPHEADER, array( 'Expect:','Connection: Close'));