Facebook Login and Iframe redirection

Question

I am building an Facebook IFrame App. I am using the below javascript code to request user to login and allow permissions for the application, after which they are supposed

Answer 1

You may use the new Facebook Graph API (http://developers.facebook.com/docs/api) to handle authentication. First, you must check if you have the access_token:

$access_token = $_REQUEST['access_token'];

if($access_token != NULL) { 
  ...
}
else {
  // the following javascript
}

And the javascript is:

You must have a file oauth_redirect.php like this:

Finally, you can return to your index page (the $appurl variable) and test if the user has permission testing access_token presence.

Hope it helps!