php - Facebook API 访问 token

Question

您好，我正在阅读 Facebook API 文档，但我需要一个简单的帮助。

$token_url = "https://graph.facebook.com/oauth/access_token?"
       . "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url)
       . "&client_secret=" . $app_secret . "&code=" . $code;

我确实理解所有变量...

但我不明白什么是$code

那个变量是什么？

我只需要从 Facebook Feed 获取用户的最后状态。

我需要生成访问 token ，但我真的不知道 $code 是什么意思？？

请帮忙。

Answer 1

这在 Facebook 开发人员文档中有详尽的解释 here .

If the user presses Allow, your app is authorized. The OAuth Dialog will redirect (via HTTP 302) the user's browser to the URL you passed in the redirect_uri parameter with an authorization code:

http://YOUR_URL?code=A_CODE_GENERATED_BY_SERVER

收到此代码后，您可以使用它来获取访问 token :

In order to authenticate your app, you must pass the authorization code and your app secret to the Graph API token endpoint at https://graph.facebook.com/oauth/access_token. The app secret is available from the Developer App and should not be shared with anyone or embedded in any code that you will distribute (you should use the client-side flow for these scenarios).

 https://graph.facebook.com/oauth/access_token?
      client_id=YOUR_APP_ID&redirect_uri=YOUR_URL&
      client_secret=YOUR_APP_SECRET&code=THE_CODE_FROM_ABOVE