How to find tagged fb photos of users and friends

I'm trying to find tagged fb photos of myself and/or of my friends

When I run this FQL query (which is from the facebook docs: http://developers.facebook.com/docs/reference/fql/photo_tag/)

$str_fql = "SELECT pid FROM photo_tag WHERE subject=me()";
$arr_data  = $this->facebook->api( array( 'method' => 'fql.query', 'query' => $str_fql ))开发者_如何学运维;
var_dump($arr_data);

it returns an empty array. However, i do have photos that i am tagged in.

any help?

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Make sure you are getting user_photo_video_tags and/or user_photos extended permission when you authenticate.