问Accesstoken facebook不活跃？

EN

initFacebook(){

$db = Application_Model_DB::create();
  $db->setTable('users');

  Zend_Session::start();
  $facebookuser = new Zend_Session_Namespace('facebookUser');


  include('../library/Facebook/facebook.php');


   $facebook = new Facebook(array(
        'appId'  => '282270168507838',
        'secret' => '*cencor*',
      ));
   $accesstoken = $facebook->getAccessToken();

   try {
        $user_profile = $facebook->api('/me?accesstoken='.$accesstoken);
         $user = $facebook->getUser();
         $fbname = $user_profile['name'];

         $result = $db->fetchAllAsArray('fbid = "'.$user.'"');

         if (count($result) == 0) {
             $db->save(array('fbid'=>$user,'status'=>'standard','name'=>$fbname));
         }
         else {
              $facebookuser->status = $result[0]['status'];
              $facebookuser->fbname= $result[0]['name'];
              $facebookuser->fbuser = $result[0]['fbid'];


         }


      } catch (Exception $e) {
         $user = 0;
         $facebookuser->error = $accesstoken;
         $facebookuser->unsetAll();

   }
}