检索Facebook App邀请者的用户ID [英] Retrieve User ID of Facebook App Invitor

问题描述

在给定的Facebook应用程序的上下文中，假设用户A邀请用户B开始使用它.用户B接受使用该应用程序后，是否有任何方法以编程方式(通过PHP/JS SDK)检索用户A的ID?似乎没有足够的记录.

In the context of a given Facebook app, suppose User A invited user B to start using it. Once User B accepts to use the app, is there any way to retrieve the ID of User A programmatically (via either PHP/JS SDK) ? This doesn't seem quite documented.

就其价值而言，A/B用户是朋友，如果有什么用.

For what it's worth, A/B users are friends, if it's any use.

推荐答案

当用户关注应用程序请求时，您可以使用

when user comes following the app request, you can get request id's using

$_GET['request_ids']

然后检索所有可调用图api的请求ID，以获取相应的请求详细信息，如下所示:

then retrieve all the request ids with which you can call graph api to get the corresponding request details like below:

if(isset($_GET['request_ids']))
     {
          $request_ids = $_GET['request_ids'];
      }
$request_ids = explode(",", $request_ids);
foreach($request_ids as $request_id)
       {
            $request_object = $facebook->api($request_id);
             //this $request_object have sender facebook id in the field uid_from
        }

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