how to count who has most friends in facebook?

开发者_Go百科Let's assume I have a Facebook Event.

how to count which attender has the biggest amount of friends attended into this same Event?

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You don't have access to a user's social graph (friends list) unless they give you permission, which is generally achieved through an application. If you're simply a FB user or page hosting an event, you don't have access to this information (even if you're a page and they're a fan).