Batch calls with Facebook Graph API & PHP

Question

Designing my first app against the Graph API, using version 2.1.2 of the Facebook supplied PHP library. Trying to maximize performance, etc out of the box and want to batch

Answer 1

I added a null check to mine:

$friends_locations = $facebook->api_client->fql_query('SELECT name,birthday_date, pic_square FROM user WHERE uid in (SELECT uid2 from friend where uid1='. $user_id .') and birthday_date > 0');