/**
* Generate a checksum for a order.
*
* @param string $merchantId
* @param string $secretCode
* @param Order $order
* @return string
*/
public static function generateChecksum($merchantId, $secretCode, Order $order)
{
return sha1(implode('|', [$secretCode, $merchantId, $order->getStatus(), $order->getStatusCode(), $order->getOrderID(), $order->getPaymentID(), $order->getReference(), $order->getTransactionID(), $order->getAmount(), $order->getCurrency(), $order->getDuration(), $order->getConsumerIPAddress()]));
}
