Facebook Graph API, how to get users email?

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The only way to get the users e-mail address is to request extended permissions on the email field. The user must allow you to see this and you cannot get the e-mail addresses of the user’s friends.

http://developers.facebook.com/docs/authentication/permissions

You can do this if you are using Facebook connect by passing scope=email in the get string of your call to the Auth Dialog.

I’d recommend using an SDK instead of file_get_contents as it makes it far easier to perform the Oauth authentication.

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