Credomatic Gateway is a PHP client for Bac Credomatic payment service
$credomaticClient = new CredomaticClient($user_name, $private_key, $public_key);
By default the webService url is already pre configured but just in case that it was changed you can add the fourth param $credomaticWebservice for change to the new url
If you need to proceess a payment you have to call the processPayment method
$credomaticClient->processPayment($order->getId(), $order->get_total(), $ccNumber, $cvv, $ccexp);
For validate you can call the succeeded method
$credomaticClient->succeeded();
Additionaly you can get the credomatic gateway response using the getResult method
$credomaticClient->getResult();