未收到 Paypal IPN Sandbox 的响应

Here's the code. Nothing special, it literally just gets the info, adjusts it, passes it back and reads the response (which it either isn't getting or doesn't realise it's getting)

<?php

$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
";
$header .= "Host: www.sandbox.paypal.com
";
$header .= "Content-Type: application/x-www-form-urlencoded
";
$header .= "Content-Length: " . strlen($postback) . "

";

$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);

while(!feof($fp)){

    $res=fgets ($fp, 1024);

    if((strcmp($res, "VERIFIED")) == 0){ //verified!
        if($debug){         
            $filename = 'debug/debug5_verified.txt'; //create a file telling me we're verified
            $filehandle=fopen($filename, 'w');
            fwrite($filehandle,'VERIFIED!');
            fclose($filehandle);
        }
    }
}

?>

提前致谢！

推荐答案

所以我想我找到了解决方案.事实证明，连接到 ssl://sandbox .... 没有问题，它实际上是在检索答案.代码被挂断了

while(!feof($fp)){
    $res=fgets($fp,1024);
}

$res=stream_get_contents($fp, 1024);