Hello guys
I'm making a facebook app and I made a great progress but stuck! I made an app in which it requires "Your basic info" and "Your e-mail address". If someone accepts the app use, I have the code that I can get
user_id
user locale
user country
and user oauth_token
It seems that I don't really know how to retrieve the name (first_name and last name) and other details. YES I can see all my details in a link like below
<a href="https://graph.facebook.com/USER_ID?access_token=THE_ACCESS_TOKEN_XXX">Graph</a><br/>
but I don't know how to store in a php variable the values. Can anyone help??? The only things I want to do, is retrieve the name and email of users who accept the app (through the canvas page) and post somthing to their wall if they answer a few questions.
Small paypal tip for the first one who helps! 
(edit: there are some examples that are using the php sdk - have tried all of them, but nothing works!!!! This also doesn't work: )