Как разобрать объект графа facebook и перебрать в поле зрения?

Я пытаюсь проанализировать объект графика facebook и разрешить просмотр итерации через объекты и его массив. Тем не менее, я ударяю блокпост, и представление показывает пустое.

facebook library:

require_once('Facebook/autoload.php');

use Facebook\FacebookSession;
use Facebook\FacebookRequest;
use Facebook\GraphUser;
use Facebook\FacebookRequestException;
use Facebook\FacebookRedirectLoginHelper;

class Facebook {
  protected $ci;

  public function __construct() {
    $this->ci =& get_instance();
    $this->ci->load->library('session');
    if(!isset($_SESSION)) {
      session_start();
    }
    FacebookSession::setDefaultApplication($this->ci->config->item('api_id', 'facebook'), $this->ci->config->item('app_secret', 'facebook'));
    $this->session = new FacebookSession($this->ci->config->item('app_token', 'facebook'));
  }

  public function get_user_profile($user) {
    $request = (new FacebookRequest($this->session, 'GET', '/' . $user))->execute()->getGraphObject(GraphUser::className());

    return $request;
  }
}

контроллер:

$data['facebook'] = $this->facebook->get_user_profile("coach");
$this->load->template('default_template', $data);

Посмотреть:

foreach($facebook as $fb_item) {
  echo var_dump($fb_item);
  echo var_dump($facebook);
}

Но я действительно хочу:

echo $fb_item->name; //to return name if its singular
echo $fb_item->cover->id; //for the multi dimensional objects
echo $fb_item->cover->source;

объект, который возвращается при выполнении print_r:

Facebook\GraphObject Object
(
    [backingData:protected] => Array
        (
            [id] => 24902886692
            [about] => The official page of Coach, a modern American luxury brand with a rich heritage of craftsmanship and New York style. Contact us at: http://bit.ly/1fdsZtA.
            [can_post] => 
            [category] => Retail and consumer merchandise
            [checkins] => 0
            [company_overview] => Coach is a modern American luxury brand with a rich heritage rooted in quality and craftsmanship. All over the world, the Coach name is synonymous with the ease and sophistication of New York style.
            [cover] => stdClass Object
                (
                    [cover_id] => 10152666534996693
                    [offset_x] => 0
                    [offset_y] => 0
                    [source] => https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/s720x720/10408485_10152666534996693_825399149096092916_n.jpg?oh=bb278cd2e136b99d5fb1a0823ff51f4d&oe=5591EAA7&__gda__=1431366774_f1edfc44f1a0e9ba2e83f491a21295ce
                    [id] => 10152666534996693
                )

            [description] => * * * * * * * * * *
Coach Facebook Fan Page Policy
We encourage open conversation on the Coach Facebook fan page. However, Coach reserves the right to delete any posts or images that we, in our sole discretion, deem inappropriate.
            [founded] => 1941
            [has_added_app] => 
            [is_community_page] => 
            [is_published] => 1
            [likes] => 5850158
            [link] => https://www.facebook.com/coach
            [location] => stdClass Object
                (
                    [city] => New York
                    [country] => United States
                    [state] => NY
                )

            [name] => Coach
            [parking] => stdClass Object
                (
                    [lot] => 0
                    [street] => 0
                    [valet] => 0
                )

            [talking_about_count] => 60665
            [username] => coach
            [website] => www.coach.com www.facebook.com/coach www.twitter.com/coach www.youtube.com/coach http://www.pinterest.com/coach/ http://instagram.com/Coach/
            [were_here_count] => 0
        )

)

Какие-нибудь советы или указания о том, как действовать?