public function action_update_media()
 {
     $this->instagram->setAccessToken(Session::read('access_token'));
     $info = $this->update();
     $images = array();
     $i = 0;
     foreach ($info['userMedia']->data as $data) {
         $images[$i]['url'] = $data->images->standard_resolution->url;
         $images[$i]['likes'] = $data->likes->count;
         $images[$i]['comments'] = $data->comments->count;
         $i++;
     }
     echo json_encode(array('images' => $images));
 }