php collection new Pixpulse_Client_Requ est collection create collecti

<?php

$collection = new Pixpulse_Client_Request('collection', 'create');

$collection->user_id = $_SESSION['Auth_User']['user_id'];
$collection->title = 'Favourite friends';
$collection->flag_a = 'friend_list';
$collection->flag_b = 'favourite_list';
$client->addRequest($collection);

$response = $client->request();

$collection = $response->collection_create->toArray();

$collection_upd = new Pixpulse_Client_Request('collection', 'updateuser');			
$collection_upd->collection_id = $collection['collection_id'];
$collection_upd->user_id = $_SESSION['Auth_User']['user_id'];
$client->addRequest($collection_upd);


$response = $client->request();