Using PHP 5.2.11 and the new facebook graph code...
If I call
$facebook->api(\"/me\");
I get a proper response:
array \'id\' =>
As an addition to betaman's answer, you can pass the parameters in a separate array like so:
$aResponse = $oFacebook->api('/me', array( 'fields' => 'picture', 'type' => 'large' ));