PHP SDK Sample: Download specific order and extract fields

This example downloads a specific order and extracts a set of payment related fields.
<?php

require_once __DIR__ . '/vendor/autoload.php';

// TODO: Replace YOUR KEY HERE with an Application API Key that has read permission to the order resource.

// Configure API key authorization: ultraCartSimpleApiKey
ultracart\v2\Configuration::getDefaultConfiguration()->setApiKey('x-ultracart-simple-key', 'YOUR API KEY HERE');

// Disable SSL verification if we're having issues with this PHP install not having the proper CA installed.  Fix your CA for a production environment!
// Set debug to true if you need more information on request/response
$client = new GuzzleHttp\Client(['verify' => false, 'debug' => false]);

$api_instance = new ultracart\v2\api\OrderApi(
    $client,
    ultracart\v2\Configuration::getDefaultConfiguration(),
    new ultracart\v2\HeaderSelector("2016-10-01")
);

// TODO: Replace this with the order id you want to query
$sourceOrderId = "DEMO-1242889";

$_expand = "payment"; // Expansion controls how much data about an object comes back.  In this example we only need payment detail.

// Query the order
$result = $api_instance->getOrder($sourceOrderId, $_expand);

// Was the API call successful?
if ($result->getSuccess()) {
    // Grab the order object
    $order = $result->getOrder();

    // Dump the result for debug
//    var_dump($order);

    $currentStage = $order->getCurrentStage();
    $paymentStatus = $order->getPayment()->getPaymentStatus();
    $paymentDate = $order->getPayment()->getPaymentDts();
    $paymentMethod = $order->getPayment()->getPaymentMethod();

    echo "\$currentStage  : " . $currentStage . PHP_EOL;
    echo "\$paymentStatus : " . $paymentStatus . PHP_EOL;
    echo "\$paymentDate   : " . $paymentDate . PHP_EOL;
    echo "\$paymentMethod : " . $paymentMethod . PHP_EOL;

    if ($paymentMethod == "Credit Card") {
        $cardType = $order->getPayment()->getCreditCard()->getCardType();
        $cardNumber = $order->getPayment()->getCreditCard()->getCardNumber(); // Masked number
        $cardExpMonth = $order->getPayment()->getCreditCard()->getCardExpirationMonth();
        $cardExpYear = $order->getPayment()->getCreditCard()->getCardExpirationYear();
        $cardAuthTicket = $order->getPayment()->getCreditCard()->getCardAuthTicket();

        echo "\$cardType      : " . $cardType . PHP_EOL;
        echo "\$cardNumber    : " . $cardNumber . PHP_EOL;
        echo "\$cardExpMonth  : " . $cardExpMonth . PHP_EOL;
        echo "\$cardExpYear   : " . $cardExpYear . PHP_EOL;
        echo "\$cardAuthTicket: " . $cardAuthTicket . PHP_EOL;
    }

}
?>