Paypal IPN正在获得空白确认（应为“已验证”或“无效”）

Question

我只是在测试贝宝IPN。我已经用沙盒装好了。我给它发了假的IPN请求，它却收到了IPN。然后，我让它返回信息进行验证，我将响应写到一个文本文件中，这样我就可以自己检查它了。IPN很好地启动，并且响应被写入文本文件。

$ipn_post_data = $_POST;

$response = "";

    // Choose url
    $url = 'https://www.sandbox.paypal.com/cgi-bin/webscr';

    // Set up request to PayPal
    $request = curl_init();
    curl_setopt_array($request, array
    (
        CURLOPT_URL => $url,
        CURLOPT_POST => TRUE,
        CURLOPT_POSTFIELDS => http_build_query(array('cmd' => '_notify-validate') + $ipn_post_data),
        CURLOPT_RETURNTRANSFER => TRUE,
        CURLOPT_HEADER => FALSE,
        CURLOPT_SSL_VERIFYPEER => TRUE,
        CURLOPT_CAINFO => 'cacert.pem',
    ));

    // Execute request and get response and status code
    $response = curl_exec($request);
    $status   = curl_getinfo($request, CURLINFO_HTTP_CODE);

    // Close connection
    curl_close($request);


$fh = fopen( "ipntest.txt", 'a+' );
$date = date( "Y-M-j H:i" );
fwrite( $fh, $date . " Response: " . $response . "\n" );
fclose( $fh );

if($status == 200 && $response == 'VERIFIED')
{
    // All good! Proceed...
}
else
{
    // Not good. Ignore, or log for investigation...
}

2012-Nov-26 23:24 Response: 
2012-Nov-26 23:25 Response: 

我以前一直在用这个代码，我已经试着让它工作了一个星期，所以它不只是一个暂时的失败或什么的...

干杯伙计们。

Answer 1

我一直使用下面的方法，而且效果很好...

// Validate with curl
$curl_result=$curl_err='';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,'https://'.$ppHost.'/cgi-bin/webscr');
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: application/x-www-form-urlencoded", "Content-Length: " . strlen($req)));
curl_setopt($ch, CURLOPT_HEADER , 1);   
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, $ssl);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);

$curl_result = curl_exec($ch);
$curl_err = curl_error($ch);
curl_close($ch);

//are we verified? If so, let's process the IPN
if (strpos($curl_result, "VERIFIED")!==false) 
    $valid = true;
else
    $valid = false;

您只需要根据事务来自沙箱还是活动服务器，确保本示例中的$pphost是正确的，然后相应地填写$req和$ssl。