Paypal IPN监听器未监听

Question

我在Paypal中有一些样本IPN，并试图设置侦听器，但无论我尝试什么，它只是不与它交谈，尽管它说它是。

下面是监听器代码：

$debug=true;

//Put together postback info
$postback = 'cmd=_notify-validate';

foreach($_POST as $key =>$value){
     $postback .= "&$key=$value";
}

// build the header string to post back to PayPal system to validate
$header = "POST /cgi-bin/webscr HTTP/1.1\r\n";
$header .= "Host: www.sandbox.paypal.com\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($postback) . "\r\n\r\n";

$fp = fsockopen ('www.sandbox.paypal.com', 80, $errno, $errstr, 30);//open the connection

if(!$fp){ //no conn
    die();
}

//post data back
fputs($fp, $header . $postback);

$res=stream_get_contents($fp, 1024);

if((strcmp($res, "VERIFIED")) == 0){ //verified!
    if($debug){         
        $filename = 'debug/verify.txt'; //create a file telling me we're verified
        $filehandle=fopen($filename, 'w');
        fwrite($filehandle,'VERIFIED!');
        fclose($filehandle);
    }
} else {
    if($debug){       
        $filename = 'debug/verify.txt'; //create a file telling me we're NOT verified
        $filehandle=fopen($filename, 'w');
        fwrite($filehandle,'NOT VERIFIED!');
        fclose($filehandle);
    }
}

if($debug){       
    $filename = 'debug/alive.txt'; //create a file telling me we're alive at least
    $filehandle=fopen($filename, 'w');
    fwrite($filehandle,'NOT VERIFIED!');
    fclose($filehandle);
}

非常简单，这是我正在发送的IPN的屏幕截图，它什么也不做：

​

​

我在侦听器文件的末尾添加了代码，以便至少让我知道它被击中了，但它什么也不做。

有没有什么明显的我遗漏了什么？用这玩意儿把我的头发都扯出来了。还有什么我可以做的调试工作吗？

Answer 1

我不知道你的代码如何，但试一下我目前在IPN监听器中使用的代码，它工作得非常好：

$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

$ch = curl_init('https://www.sandbox.paypal.com/cgi-bin/webscr');
if ($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);

// 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($ch) != 0) {
    error_log(date('[Y-m-d H:i:s] '). "Couldn't connect to PayPal to validate IPN message: " . curl_error($ch) . PHP_EOL, 3, LOG_FILE);
    curl_close($ch);
    exit;

} else {
        curl_close($ch);
}

// Inspect IPN validation result and act accordingly
if (strcmp($res, 'VERIFIED') == 0) {
    // do something...
} elseif (strcmp($res, 'INVALID') == 0) {
    // do something...
}