Using PHP 5.2.11 and the new facebook graph code...
If I call
$facebook->api(\"/me\");
I get a proper response:
array \'id\' =>
While using $facebook->api("/me?fields=picture"); does work, you won't be able to pass parameters such as width or type. Instead try the following:
$facebook->api('/me/picture?redirect=false');
This worked for me and will also allow you to pass parameters.