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 have given example for batch calls of fql queries. It might help someone.

//$current_user=facebook id

 $query1="SELECT uid, name FROM user WHERE is_app_user=1 AND uid IN (SELECT uid2 FROM friend WHERE uid1 = $current_user)";
 $query2="SELECT uid, name, work_history FROM user WHERE uid IN (SELECT uid2 FROM friend WHERE uid1 = $current_user )";
 $query3="SELECT uid, name, work, education FROM user WHERE uid = $current_user";
 $queries = array(
           array('method'=>'GET', 'relative_url'=>'method/fql.query?query='.str_replace(' ','+',$query1)),
           array('method'=>'GET', 'relative_url'=>'method/fql.query?query='.str_replace(' ','+',$query2)),
           array('method'=>'GET', 'relative_url'=>'method/fql.query?query='.str_replace(' ','+',$query3))
            );

            $objs = $facebook->api('/?batch='.json_encode($queries), 'POST');

$objs gets json array of whole result of thre queries.

And it is saving time a lot. This 3 queries individually takes total 9 seconds. With multiquery it takes 7 seconds. And with batch request it takes 3.6 seconds.