PayPal - IPN不能正常工作

Question

我無法讓我的IPN正常工作， 我添加了它，並將它發送到窗體。但我無法讓聽衆工作，我有以下作爲我的聽衆;

<?php 

// STEP 1: read POST data 

// Reading POSTed data directly from $_POST causes serialization issues with array data in the POST. 
// Instead, read raw POST data from the input stream. 
$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 IPN message sent from PayPal and prepend 'cmd=_notify-validate' 
$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); 

// inspect IPN validation result and act accordingly 

if (strcmp ($res, "VERIFIED") == 0) { 
// The IPN is verified, process it: 
// 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 the notification 

// 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']; 
$con=mysqli_connect("********); 
$sessid=$_SESSION['id']; 
$check = mysqli_query($con,"SELECT * Members WHERE id='$sessid'"); 
$check2 = mysqli_fetch_assoc($check); 
$totalam = $_POST['mc_gross'] + $check2['credit']; 
mysqli_query($con,"UPDATE members SET credit='$totalam' WHERE id='$sessid'"); 


// IPN message values depend upon the type of notification sent. 
// To loop through the &_POST array and print the NV pairs to the screen: 
foreach($_POST as $key => $value) { 
echo $key." = ". $value."<br>"; 
} 
} else if (strcmp ($res, "INVALID") == 0) { 
// IPN invalid, log for manual investigation 
echo "The response from IPN was: <b>" .$res ."</b>"; 
} 
?> 

But 

它不工作。它沒有收到細節，並將其添加到我的數據庫中， 任何人都可以幫忙嗎？

我把它貼在了paypal論壇上，並被告知來這裏尋求更多的技術支持。

Answer 1

以下行後：

// inspect IPN validation result and act accordingly

嘗試添加以下行：

$res = trim($res);