get facebook user info

//$id is the user id
//$fields is the information to get: first_name, last_name, friends, likes...
//$facebook is the object obtained from: $facebook = new Facebook($config)
  function get_user_info($id, $fields, $facebook)  {
    try {
        $user_profile = $facebook->api('/'.$id.'?fields='.$fields,'GET');
    } catch (FacebookApiException $e) {
                //handle the exception
        return NULL;
    }

        //handle with paged likes
    if (array_key_exists('next',$user_profile['likes']['paging'])) {
        $after = $user_profile['likes']['paging']['cursors']['after'];
        try {
            $new  = $facebook->api('/'.$id.'/likes?after=' . $after, 'GET');
            $n = $new; //to get right 'after'
            while(array_key_exists('next',$n['paging'])) {
                $after = $n['paging']['cursors']['after'];
                $n = $facebook->api('/'.$id.'/likes?after=' . $after, 'GET');
                $new = array_merge_recursive($new,$n);
            }
            $user_profile = array_merge_recursive($user_profile,array("likes"=>$new));
            unset($user_profile['likes']['paging']);
        } catch (FacebookApiException $e) {
                      //...
        }
    }
    return $user_profile;
  }