从页面选项卡URL检索参数 [英] Retrieve Parameter From Page Tab URL

问题描述

我有一个具有URL的Facebook选项卡应用程序。我想传递URL一些GET参数。通常这是我如何获得用户数据的签名请求：

  if（$ signed_request = parsePageSignedRequest（））{
 $ config = array（
'appId'=> $ app_id，
'secret'=> $ app_secret，
）; 
 
 $ facebook = new Facebook（$ config）; 
 
 
 $ ret_obj = $ facebook-> api（'/ me'，'GET'，array（））; 
 
 $ theemail = $ ret_obj ['email']; 
 $ thename = $ ret_obj ['name']; 
 $ theusername = $ ret_obj ['username']; 
} 
  

我想知道如何从url获取GET参数。网址看起来像：

https://www.facebook.com/pages/Msomepagey/23023424231927?sk=app_518726691484563&user=someuser

我想要获取用户的值。

任何想法？

解决方案

您需要使用 app_data 参数。 Facebook会读取此参数并将其传递给您的应用程序：

此外，您的应用程序还将收到一个名为
app_data 作为 signed_request 的一部分，如果app_data参数在
中设置为原始查询字符串您的标签页加载的URL。它可以
看起来像这样：
https://www.facebook.com/YourPage?v=app_1234567890&app_data=any_string_here 。
如果您控制
链接的生成，您可以使用它自定义您呈现的内容。

在旁注中，您可以使用PHP-SDK来获取这样的签名请求：

  $ signed_request = $ facebook - > getSignedRequest（）; 
  

更多这里： https://github.com/facebook/facebook-php-sdk/blob/master/src/base_facebook.php#L489

此外，您还需要检查您是否在调用 / me 之前确实有一个有效的用户会话，我建议您可以查看PHP-SDK 示例。

I have a facebook tab application that has an URL. I want to pass the URL some GET parameters. Normally this is how I do a signed request to get user data:

if ($signed_request = parsePageSignedRequest()) {   
    $config = array(
        'appId'  => $app_id,
        'secret' => $app_secret,
    );

    $facebook = new Facebook($config);


    $ret_obj = $facebook->api('/me', 'GET', array());

    $theemail = $ret_obj['email'];
    $thename = $ret_obj['name'];
    $theusername = $ret_obj['username'];
}

I was wondering how to get the GET parameter from the url. The url looks like:

https://www.facebook.com/pages/Msomepagey/23023424231927?sk=app_518726691484563&user=someuser

I want to get the value for user.

Any ideas?

解决方案

You need to use the app_data parameter. Facebook would read this parameter and pass it to your app within the request:

In addition, your app will also receive a string parameter called app_data as part of signed_request if an app_data parameter was set in the original query string in the URL your tab is loaded on. It could look like this: "https://www.facebook.com/YourPage?v=app_1234567890&app_data=any_string_here". You can use that to customize the content you render if you control the generation of the link.

On a side note, you can use the PHP-SDK to also get the signed request like this:

$signed_request = $facebook->getSignedRequest();

More here: https://github.com/facebook/facebook-php-sdk/blob/master/src/base_facebook.php#L489

Also you need to check if you actually have a valid user session before calling /me, I suggest you have a look at the PHP-SDK example.

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