require_once('/path/to/Digitalriver APIs Client Library for PHP/vendor/autoload.php');

<?php
require_once(__DIR__ . '/vendor/autoload.php');

// Configure Bearer authorization: bearerAuth
// The following example will create a checkout. Replace YOUR_ACCESS_TOKEN with your confidential API key.
$config = DigitalRiver\ApiSdk\Configuration::getDefaultConfiguration()->setAccessToken('YOUR_ACCESS_TOKEN');
$config->setHost('https://api.digitalriver.com');

$apiInstance = new DigitalRiver\ApiSdk\Api\CheckoutsApi(
  // If you want use custom http client, pass your client which implements `GuzzleHttp\ClientInterface`.
  // This is optional, `GuzzleHttp\Client` will be used as default.
  new GuzzleHttp\Client(),
  $config
  );
  
  $checkout_request = new \DigitalRiver\ApiSdk\Model\CheckoutRequest(); // \DigitalRiver\ApiSdk\Model\CheckoutRequest |
  // Refer \DigitalRiver\ApiSdk\Model\CheckoutRequest::$setters in digital-river-php/lib/Model/CheckoutRequest.php to set the properties.

  $checkout_request->setCurrency('USD');
  $checkout_request->setLocale('en_US');
  $checkout_request->setEmail('[email protected]');
  
  $ship_from_address = new DigitalRiver\ApiSdk\Model\Address();
  $ship_from_address->setLine1('10380 Bren Road West');
  $ship_from_address->setLine2('');
  $ship_from_address->setCity('Minneapolis');
  $ship_from_address->setPostalCode('55343');
  $ship_from_address->setState('MN');
  $ship_from_address->setCountry('US');
  $ship_from = new DigitalRiver\ApiSdk\Model\ShipFrom();
  $ship_from->setAddress($ship_from_address);
  $checkout_request->setShipFrom($ship_from);

  $ship_to_address = new DigitalRiver\ApiSdk\Model\Address();
  $ship_to_address->setLine1('123 Sesame Street');
  $ship_to_address->setLine2('Suite 1a');
  $ship_to_address->setCity('Minneapolis');
  $ship_to_address->setPostalCode('55123');
  $ship_to_address->setState('MN');
  $ship_to_address->setCountry('US');

  $ship_to =  new DigitalRiver\ApiSdk\Model\Shipping();
  $ship_to->setAddress($ship_to_address);
  $ship_to->setName('John Doe');
  $ship_to->setPhone('612-343-4567');
  $ship_to->setEmail('[email protected]');
  $ship_to->setOrganization('Company Name (optional)');
  $checkout_request->setShipTo($ship_to);

  $shipping_choice = new DigitalRiver\ApiSdk\Model\ShippingRequest();
  $shipping_choice->setAmount(5.5);
  $shipping_choice->setDescription("Client provides-Standard Ground - US");
  $shipping_choice->setServiceLevel("Client provides shipping service");
  $checkout_request->setShippingChoice($shipping_choice);
  
  $item_1 = new DigitalRiver\ApiSdk\Model\SkuRequestItem();
  $item_1->setSkuId('365647477-5334d-9f4h-l15mq-45807987');
  $item_1->setQuantity(1);
  $item_1->setPrice(34.99);
  
  $item_2 = new DigitalRiver\ApiSdk\Model\SkuRequestItem();
  $item_2->setSkuId('06999045-5334d-9f4h-h56879k-45801126787');
  $item_2->setQuantity(1);
  $item_2->setPrice(20);
  
  $item_3 = new DigitalRiver\ApiSdk\Model\SkuRequestItem();
  $item_3->setSkuId('374687939-828d88-9f4h-h56879k-47908980498');
  $item_3->setQuantity(1);
  $item_3->setPrice(15);
  $checkout_request->setItems($item_1,$item_2,$item_3);

try {
  $result = $apiInstance->createCheckouts($checkout_request);
    print_r($result);
  } catch (Exception $e) {
    echo 'Exception when calling CheckoutsApi->createCheckouts: ', $e->getMessage(), PHP_EOL;
  }
?>