EasyPost\Batch::create PHP Method

    public static function create($params = null, $apiKey = null)
    {
        if (!isset($params['batch']) || !is_array($params['batch'])) {
            $clone = $params;
            unset($params);
            $params['batch'] = $clone;
        }
        return self::_create(get_class(), $params, $apiKey);
    }

try {
    // create addresses
    $from_address = array("company" => "EasyPost", "street1" => "388 Townsend St", "city" => "San Francisco", "state" => "CA", "zip" => "94107-8273", "phone" => "415-456-7890");
    $parcel = array("predefined_package" => 'Parcel', "weight" => 22.9);
    // in your application orders will likely
    // come from an external data source
    $orders = array(array("address" => array("name" => "Ronald", "street1" => "6258 Amesbury St", "city" => "San Diego", "state" => "CA", "zip" => "92114"), "reference" => "123456786"), array("address" => array("name" => "Hamburgler", "street1" => "8308 Fenway Rd", "city" => "Bethesda", "state" => "MD", "zip" => "20817"), "reference" => "123456787"), array("address" => array("name" => "Grimace", "street1" => "10 Wall St", "city" => "Burlington", "state" => "MA", "zip" => "01803"), "reference" => "123456788"));
    // create shipments
    $shipments = array();
    for ($i = 0, $j = count($orders); $i < $j; $i++) {
        $shipment = \EasyPost\Shipment::create(array("to_address" => $orders[$i]["address"], "from_address" => $from_address, "parcel" => $parcel, "reference" => $orders[$i]["reference"]));
        $shipment->buy(array("rate" => $shipment->lowest_rate('usps')));
        $shipments[] = $shipment;
    }
    // create a batch to hold shipments and scan_form
    $batch = \EasyPost\Batch::create();
    $batch->add_shipments(array("shipments" => $shipments));
    // this could alternatively take a list of shipment_ids rather than shipment objects
    // request a scan form
    $batch->create_scan_form();
    // wait for scan form to complete
    while (empty($batch->scan_form)) {
        sleep(5);
        $batch->refresh();
    }
    // print scan form url
    print_r($batch);
    // print_r($batch->scan_form->form_url);
    // retrieve
    $retrieved = \EasyPost\ScanForm::retrieve($batch->scan_form->id);
    // print_r($retrieved);