XFBML and Facebook PHP SDK

How do I get a pe开发者_StackOverflow社区rson to connect to the website through the XFBML/JS then use the session/token with PHP SDK?

Right now we have

$this->facebook->getLoginUrl(array('scope' => 'email, user_location, publish_stream'))

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Look at this site:

http://blog.mixu.net/2011/01/03/implementing-facebook-login-part-2/

You have to show a login button, which will redirect or refresh the page (with onLogin="window.location = url.com"). After the user has logged in to your site via the login button and the page has been refreshed, you can fetch all necessary data with php.