获得与Facebook连接的用户的生日

Question

I try to implement data login with facebook in my application php ... I get birthday to my profile (i create application facebook in my profile) but I didn't get a birthday in another profile facebook. when I connect with another profile facebook I didn't get birthday ... how to resolve that, please I add this in code js but also an error:

{scope: 'user_photos,user_videos,email,user_birthday,user_location,user_work_history,user_about_me,user_hometown'}

and this in code php :

    $response= $fb->get('me?fields=id,name,email,last_name,first_name,gender,locale,address,birthday',$token);