For the php sdk, facebook simply sends an array of data, so it is just a matter of parsing the array.
The easiest answer, I believe, would be to design a page template with your theme, and the gravity form resides on that page template. In the head, it queries facebook for a response. If the user is logged in and has previously authorized your application, facebook returns an array. If user logged in not auth, facebook returns an array - just none of the fields you want
I did the latter on a custom coded Facebook php form, submit to Gform, it was a pain in the ass. It resided outside my wordpress install, so I could have a quick loading canvas page for a page tab on my facebook page.
Posted 9 years ago on Tuesday October 2, 2012 | Permalink