require_once 'CRM/Utils/Request.php';
$type = CRM_Utils_Request::retrieve('type', 'String', CRM_Core_DAO::$_nullObject, FALSE, 'csv', 'REQUEST');
require_once 'CRM/Utils/Request.php';
$type = CRM_Utils_Request::retrieve('type', 'String', CRM_Core_DAO::$_nullObject, FALSE, 'csv', 'REQUEST');