facebook photos

mypermission are

$par['req_perms'] = "publish_stream, offline_access, user_status, user_photos, user_videos, user_photo_video_tags, read_stream, user_likes, user_events, email, user_groups";

i try to get facebook photos calling method

$photos = $facebook->api('/'.'userid'.'/photos');

but i get empty array,开发者_运维技巧 what is the solution for this?

There's nothing at /userid/photos.