我正在尝试创建一个订阅网站。除了Paypal IPN脚本不起作用外，其他所有东西都工作正常。日志显示“ 400-错误的请求错误”。我发现的原因是Paypal对其IPN脚本要求进行了更改。新脚本与我正在使用的脚本有很大不同。我已经尝试了所有方法，但是无法使IPN脚本正常工作（无论新旧）。我到处搜索，并在这里找到解决方案：http://larryullman.com/forums/index.php?/topic/1577-chapter-6-ipn/&tab=comments#comment-9605。但是它不再适用，因为Paypal对脚本进行了进一步的更改。）有人可以更新我的IPN脚本，使其重新开始工作。非常感谢您的帮助。
下面是我的IPN脚本：
<?php
// Require the configuration before any PHP code as the configuration controls error reporting:
require ('./includes/config.inc.php');
// The config file also starts the session.
// Open the text file:
// The text file must be writable by PHP!
$file = fopen('./ipn.txt', 'a');
// Write the POST data to the file:
fwrite($file, "Received:\n");
fwrite($file, print_r($_POST, true));
fwrite($file, "\n");
// Start by creating a request variable:
$req = 'cmd=_notify-validate';
// Add each received key=value pair to the request:
foreach ($_POST as $key => $value) {
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";
}
// Open a socket connection to PayPal:
$fp = fsockopen ('ssl://www.sandbox.paypal.com', 443, $errno, $errstr, 30); // Test
//$fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30); // Live
if (!$fp) { // If we couldn't connect, send an email:
trigger_error('Could not connect for the IPN!');
} else { // Send the request to PayPal:
$header = "POST /cgi-bin/webscr HTTP/1.0\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
fputs ($fp, $header . $req);
// Write the PayPal request to the text file:
fwrite($file, "Sent:\n");
fwrite($file, "$header\n");
fwrite($file, "$req\n");
// Read in the response:
while (!feof($fp)) {
$res = fgets ($fp, 1024);
// Write the PayPal response to the text file:
fwrite($file, "Received:\n");
fwrite($file, "$res\n");
if (strcmp ($res, "VERIFIED") == 0) {
// Check for the right values:
if ( ($_POST['payment_status'] == 'Completed')
&& ($_POST['receiver_email'] == 'seller_1281297018_biz@mac.com')
&& ($_POST['mc_gross'] == 10.00)
&& ($_POST['mc_currency'] == 'USD')
&& (!empty($_POST['txn_id']))
) {
// Need the database connection now:
require(MYSQL);
// Check for this transaction in the database:
$txn_id = mysqli_real_escape_string($dbc, $_POST['txn_id']);
$q = "SELECT id FROM orders WHERE transaction_id='$txn_id'";
$r = mysqli_query ($dbc, $q);
if (mysqli_num_rows($r) == 0) { // Add this new transaction:
$uid = (int) $_POST['custom'];
$status = mysqli_real_escape_string($dbc, $_POST['payment_status']);
$amount = (float) $_POST['mc_gross'];
$q = "INSERT INTO orders (user_id, transaction_id, payment_status, payment_amount) VALUES ($uid, '$txn_id', '$status', $amount)";
$r = mysqli_query ($dbc, $q);
if (mysqli_affected_rows($dbc) == 1) {
// Update the users table:
$q = "UPDATE users SET date_expires = IF(date_expires > NOW(), ADDDATE(date_expires, INTERVAL 1 YEAR), ADDDATE(NOW(), INTERVAL 1 YEAR)), date_modified=NOW() WHERE id=$uid";
$r = mysqli_query ($dbc, $q);
if (mysqli_affected_rows($dbc) != 1) {
trigger_error('The user\'s expiration date could not be updated!');
}
} else { // Problem inserting the order!
trigger_error('The transaction could not be stored in the orders table!');
}
} // The order has already been stored!
} // The right values don't exist in $_POST!
} elseif (strcmp ($res, "INVALID") == 0) {
// log for manual investigation
}
} // End of the WHILE loop.
// Close the connection:
fclose ($fp);
} // End of $fp IF-ELSE.
// Inidicate the end of this transaction in the text file:
fwrite($file, "--------------\n");
fclose($file);
?>