Facebook 从应用程序选项卡获取用户 ID
Facebook 应用程序可以有一个选项卡，用户可以根据需要将其添加到其个人资料的选项卡中。
我如何获取 uid 或以其他方式识别当前登录的用户以便为他自定义布局？
谢谢。
Facebook apps are allowed to have a tab that a user can add to his profile's tabs if he wants.
How can I get the uid or otherwise identify the currently logged in user in order to customize the layout for him please?
Thank you.
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正如此处所述：
用户与您的选项卡交互后，访客 ID 将作为请求参数传递。我找不到确切的参数名称，因为他们删除了一个 wiki 页面，该页面曾经包含所有传递参数的列表，但如果您转储所有请求变量，您应该能够看到它（但在第一次访问期间看不到）。
As noted here:
Visitor id is passed as request parameter after a user interacts with your tab. I can't find exact parameter name as they removed a wiki page that used to contain a list of all passed parameters, but if you dump all your request vars you should be able to see it (but not during the first visit).
一些来源来做到这一点+您必须在应用程序设置中打开所有迁移项目
http://nathrondevblog.blogspot.com/2010/09/how-to-get-user-id-in-profile-tab.html
some sources to do it + you must have turned on all items on migration in app settings
http://nathrondevblog.blogspot.com/2010/09/how-to-get-user-id-in-profile-tab.html
试试这个，
如果用户已登录。您可以直接从查询字符串中获取 user_id、session_key 等。
Try out this one,
If the user is logged in. You can directly get the user_id, session_key etc from the querystring.