Overview

Extract all subscriptions belonging to a customer. Use the getCustomerSubscriptions method to retrieve details about the subscriptions belonging to a specific customer.

Parameters

Response

Request

<?php
$host   = "https://api.avangate.com";
$client = new SoapClient($host . "/soap/4.0/?wsdl", array(
    'location' => $host . "/soap/4.0/",
    "stream_context" => stream_context_create(array(
        'ssl' => array(
            'verify_peer' => false,
            'verify_peer_name' => false
        )
    ))
));

function hmac($key, $data)
{
    $b = 64; // byte length for md5
    if (strlen($key) > $b) {
        $key = pack("H*", md5($key));
    }
    
    $key    = str_pad($key, $b, chr(0x00));
    $ipad   = str_pad('', $b, chr(0x36));
    $opad   = str_pad('', $b, chr(0x5c));
    $k_ipad = $key ^ $ipad;
    $k_opad = $key ^ $opad;
    return md5($k_opad . pack("H*", md5($k_ipad . $data)));
}
$merchantCode = "YOUR_MERCHANT_CODE";// your account's merchant code available in the 'System settings' area of the cPanel: https://secure.avangate.com/cpanel/account_settings.php
$key = "YOUR_SECRET_KEY";// your account's secret key available in the 'System settings' area of the cPanel: https://secure.avangate.com/cpanel/account_settings.php
$now          = gmdate('Y-m-d H:i:s'); //date_default_timezone_set('UTC')
$string = strlen($merchantCode) . $merchantCode . strlen($now) . $now;
$hash   = hmac($key, $string);
try {
    $sessionID = $client->login($merchantCode, $now, $hash);
}
catch (SoapFault $e) {
    echo "Authentication: " . $e->getMessage();
    exit;
}
$CustomerReference = 260015052;
try {
    $ListofSubscriptions = $client->getCustomerSubscriptions($sessionID, $CustomerReference);
}
catch (SoapFault $e) {
    echo "ListofSubscriptions: " . $e->getMessage();
    exit;
}
var_dump("ListofSubscriptions", $ListofSubscriptions);

Response

bool(true)

Request

<?php

$host   = "https://api.2checkout.com";
$client = new SoapClient($host . "/soap/4.0/?wsdl", array(
    'location' => $host . "/soap/4.0/",
    "stream_context" => stream_context_create(array(
        'ssl' => array(
            'verify_peer' => false,
            'verify_peer_name' => false
        )
    ))
));


function hmac($key, $data)
{
    $b = 64; // byte length for md5
    if (strlen($key) > $b) {
        $key = pack("H*", md5($key));
    }
    
    $key    = str_pad($key, $b, chr(0x00));
    $ipad   = str_pad('', $b, chr(0x36));
    $opad   = str_pad('', $b, chr(0x5c));
    $k_ipad = $key ^ $ipad;
    $k_opad = $key ^ $opad;
    return md5($k_opad . pack("H*", md5($k_ipad . $data)));
}

$merchantCode = "YOURCODE123"; //your account's merchant code available in the 'System settings' area of the cPanel: https://secure.2checkout.com/cpanel/account_settings.php
$key          = "SECRET_KEY"; //your account's secret key available in the 'System settings' area of the cPanel: https://secure.2checkout.com/cpanel/account_settings.php
$now          = gmdate('Y-m-d H:i:s'); //date_default_timezone_set('UTC')

$string = strlen($merchantCode) . $merchantCode . strlen($now) . $now;
$hash   = hmac($key, $string);

try {
    $sessionID = $client->login($merchantCode, $now, $hash);
}

catch (SoapFault $e) {
    echo "Authentication: " . $e->getMessage();
    exit;
}

$ProductCode = 'AAA4643116';
$Code = "Code_12345AB";
try {
    $AssignedProductGroup = $client->unassignProductGroup($sessionID, $ProductCode, $Code);
}

catch (SoapFault $e) {
    echo "AssignedProductGroup: " . $e->getMessage();
    exit;
}

var_dump("AssignedProductGroup", $AssignedProductGroup);

?>

Overview

Use the getSingleSignOnByCustomer method to create Single Sign-On links into 2Checkout myAccount based on customer references (IDs). Use either the Avangate Customer Reference or the External Customer Reference to identify specific customers.

Parameters

Response

Request

<?php
require('PATH_TO_AUTH');

$idCustomer = '352365983';
$customerType = 'AvangateCustomerReference';
$page = 'my_license';
$request = null;
$validityTime = 50;
$validationIp = null;
$languageCode = 'en';

$jsonRpcRequest = [
    'method' => 'getSingleSignOnByCustomer',
    'params' => [
        $sessionID,
        $idCustomer,
        $customerType,
        $page,
        $request,
        $validityTime,
        $validationIp,
        $languageCode // optional
    ],
    'id' => $i++,
    'jsonrpc' => '2.0',
];

var_dump(callRPC((object)$jsonRpcRequest, $host, true));

Overview

Use the placeOrder method to create orders and collect payments from iDEAL.

Requirements

Only shoppers in the Netherlands can select iDEAL as a payment option and choose their bank. You're required to include the following text when using 2Checkout API and to make it visible for your customers in the ordering interface.

Order processed by 2Checkout, authorized reseller and merchant of the products and services offered within this store. 

Supported currencies

• EUR

Workflow

1. Use the getIdealIssuerBanks method for retrieving information on the 2Checkout list of banks that support iDEAL payments. More details about this method here.
2. Shoppers select iDEAL as payment option in the interface you provide them, and select their bank from the list.
3. Create the order object. Use IDEAL as the type of the PaymentDetails object, and include ReturnURL and CancelURL. The BankCode parameter should be added based on the bank selected by the customer, from the array obtained after calling method getIdealIssuerBanks.
4. Use the placeOrder method to send the data to 2Checkout.
5. Once you place the order, 2Checkout logs it into the system. At this point in time, the status of the order is PENDING.
6. 2Checkout returns an Order object as the output of the placeOrder method. 
7. Use the PaymentMethod object to create a redirect URL for the shoppers, concatenating the values of the Href and avng8apitoken parameters. Here's an example of the redirect URL:
   

   https://api.2checkout.com/4.0/scripts/ideal/authorize/?avng8apitoken=f56373d92ed6b153
   

8. Customers are directed to the iDEAL payment page, where they have to confirm their payment details before finishing the ordering process.
9. Shoppers are redirected to the RedirectURL from the Order information object. In case the payment fails, shoppers are redirected to the CancelURL. 

Parameters

Response

Request

<?php

// authentication script: https://knowledgecenter.2checkout.com/Integration/SOAP_API/API_4.0/02Authentication

require ('PATH_TO_AUTH');

$Order = new stdClass();
$Order->RefNo = NULL;
$Order->Currency = 'eur';
$Order->Country = 'nl';
$Order->Language = 'en';
$Order->CustomerIP = '91.220.121.21';
$Order->ExternalReference = NULL;
$Order->Source = NULL;
$Order->AffiliateId = NULL;
$Order->CustomerReference = NULL;
$Order->Items = array();
$Order->Items[0] = new stdClass();
$Order->Items[0]->Code = 'my_subscription_1';
$Order->Items[0]->Quantity = 1;
$Order->Items[0]->PriceOptions = NULL;
$Order->Items[0]->SKU = NULL;
$Order->Items[0]->Price = NULL;
$Order->Items[0]->CrossSell = NULL;
$Order->Items[0]->Trial = false;
$Order->Items[0]->AdditionalFields = NULL;
$Order->BillingDetails = new stdClass();
$Order->BillingDetails->FirstName = 'FirstName';
$Order->BillingDetails->LastName = 'LastName';
$Order->BillingDetails->CountryCode = 'NL';
$Order->BillingDetails->State = 'State Example';
$Order->BillingDetails->City = 'City Example';
$Order->BillingDetails->Address1 = 'Address example';
$Order->BillingDetails->Address2 = NULL;
$Order->BillingDetails->Zip = '12345';
$Order->BillingDetails->Email = 'email@address.com';
$Order->BillingDetails->Phone = NULL;
$Order->BillingDetails->Company = NULL;
$Order->PaymentDetails = new stdClass ();
$Order->PaymentDetails->Type = 'IDEAL';
$Order->PaymentDetails->Currency = 'eur';
$Order->PaymentDetails->PaymentMethod = new stdClass ();
$Order->PaymentDetails->CustomerIP = '91.220.121.21';
$Order->PaymentDetails->PaymentMethod->ReturnURL = 'YOUR_RETURN_URL';
$Order->PaymentDetails->PaymentMethod->CancelURL= 'YOUR_CANCEL_URL';
$Order->PaymentDetails->PaymentMethod->BankCode='BANK_CODE'; // value retrieved based on the bank selected by the customer, from the array obtained after calling method getIdealIssuerBanks.

try {
   $newOrder = $client->placeOrder($sessionID, $Order);
}
catch (SoapFault $e) {
    echo "newOrder: " . $e->getMessage();
    exit;
}

$idealredirect= $newOrder->PaymentDetails->PaymentMethod->Authorize->Href."/?avng8apitoken=".$newOrder->PaymentDetails->PaymentMethod->Authorize->Params->avng8apitoken;

header('Location:' . $idealredirect);
?>

Response

bool(true)

Request

<?php

$host   = "https://api.avangate.com";
$client = new SoapClient($host . "/soap/3.0/?wsdl", array(
    'location' => $host . "/soap/3.0/",
    "stream_context" => stream_context_create(array(
        'ssl' => array(
            'verify_peer' => false,
            'verify_peer_name' => false
        )
    ))
));


function hmac($key, $data)
{
    $b = 64; // byte length for md5
    if (strlen($key) > $b) {
        $key = pack("H*", md5($key));
    }
    
    $key    = str_pad($key, $b, chr(0x00));
    $ipad   = str_pad('', $b, chr(0x36));
    $opad   = str_pad('', $b, chr(0x5c));
    $k_ipad = $key ^ $ipad;
    $k_opad = $key ^ $opad;
    return md5($k_opad . pack("H*", md5($k_ipad . $data)));
}

$merchantCode = "YOURCODE123"; //your account's merchant code available in the 'System settings' area of the cPanel: https://secure.2checkout.com/cpanel/account_settings.php
$key          = "SECRET_KEY"; //your account's secret key available in the 'System settings' area of the cPanel: https://secure.2checkout.com/cpanel/account_settings.php
$now          = gmdate('Y-m-d H:i:s'); //date_default_timezone_set('UTC')

$string = strlen($merchantCode) . $merchantCode . strlen($now) . $now;
$hash   = hmac($key, $string);

try {
    $sessionID = $client->login($merchantCode, $now, $hash);
}

catch (SoapFault $e) {
    echo "Authentication: " . $e->getMessage();
    exit;
}

$ProductCode = 'AAA4643116';
$Code = "Code_12345AB";
try {
    $AssignedProductGroup = $client->unassignProductGroup($sessionID, $ProductCode, $Code);
}

catch (SoapFault $e) {
    echo "AssignedProductGroup: " . $e->getMessage();
    exit;
}

var_dump("AssignedProductGroup", $AssignedProductGroup);

?>

Overview

Use the getPayPalExpressCheckoutRedirectURL method to retrieve the RedirectURL by sending an Order object with PAYPAL_EXPRESS payment method.

Parameters

Response

Request

 <?php
//Use the following 2 scripts:
//The place_order_api_json_paypal_express.php
// And the place_order_api_json_paypal_express_response that you can find below

require ('PATH_TO_AUTH');

$NewOrder = new stdClass();
$NewOrder->Language = 'fr';
//$NewOrder->LocalTime = date('Y-m-d G:i:s');
$NewOrder->CustomerReference = 'APITEST';//uniqid('TESTCUSTOMER:');

$Product = new stdClass();
$Product->Code = 'my_subscription_1';
$Product->Quantity = 1;
$NewOrder->Items[] = $Product;
$NewOrder->Currency = 'EUR';
$Payment = new stdClass();
$Payment->Type = 'PAYPAL_EXPRESS';
$Payment->Currency = 'EUR';
$Payment->CustomerIP = '91.220.121.21';
$PayPalExpress = new stdClass();
$PayPalExpress->Email='customer@email.com';
$PayPalExpress->ReturnURL = 'http://' . $_SERVER['HTTP_HOST'] . '/api/place_order_api_json_paypal_express_response.php';
$PayPalExpress->CancelURL = 'http://' . $_SERVER['HTTP_HOST'] . '/api/place_order_api_json_paypal_express_response.php' . '?cancel=true';
$Payment->PaymentMethod = $PayPalExpress;    
$NewOrder->PaymentDetails = $Payment;

// Call the method for retrieving Express Checkout redirect URL
$jsonRpcRequest = new stdClass();
$jsonRpcRequest->jsonrpc = '2.0';
$jsonRpcRequest->method = 'getPayPalExpressCheckoutRedirectURL';
$jsonRpcRequest->params = array($sessionID, $NewOrder);
$jsonRpcRequest->id = $i++;
$redirectUrl = callRPC($jsonRpcRequest, $host);
header('Location:' . $redirectUrl);
die();


// This is the start of the second script place_order_api_json_paypal_express_response.php

<?php
var_dump($_REQUEST);
if (isset($_GET['billingDetails'])) {
    $billingDetails = base64_decode($_GET['billingDetails']);
    parse_str($billingDetails, $billingDetailsArray);
}
if (isset($_GET['deliveryDetails'])) {
    $deliveryDetails = base64_decode($_GET['deliveryDetails']);
    parse_str($deliveryDetails, $deliveryDetailsArray);
}
if (isset($_GET['token'])) {
    $token = $_GET['token'];
}
if (!empty($_GET['cancel']) && $_GET['cancel'] == true) {
  echo 'canceled';
  die();
} else {
  echo 'success!';
}


/*************************************************************/

function callRPC($Request, $hostUrl, $Debug = true) {
    $curl = curl_init($hostUrl);
    curl_setopt($curl, CURLOPT_POST, 1);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
    curl_setopt($curl, CURLOPT_SSLVERSION, 0);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: application/json', 'Accept: application/json'));
    $RequestString = json_encode($Request);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $RequestString);


    if ($Debug) {
        $RequestString;
    }
    $ResponseString = curl_exec($curl);
    if ($Debug) {
        $ResponseString;
    }

    if (!empty($ResponseString)) {
        $Response = json_decode($ResponseString);
        if (isset($Response->result)) {
            return $Response->result;
        }
        if (!is_null($Response->error)) {
            var_dump($Request->method, $Response->error);
        }
    } else {
        return null;
    }
}

$host = 'https://api.avangate.com/rpc/3.0/';

$merchantCode = "YOUR_MERCHANT_CODE";// your account's merchant code available in the 'System settings' area of the cPanel: https://secure.avangate.com/cpanel/account_settings.php
$key = "YOUR_SECRET_KEY";// your account's secret key available in the 'System settings' area of the cPanel: https://secure.avangate.com/cpanel/account_settings.php

$string = strlen($merchantCode) . $merchantCode . strlen(gmdate('Y-m-d H:i:s')) . gmdate('Y-m-d H:i:s');
$hash = hash_hmac('md5', $string, $key);

$i = 1; // counter for api calls
// Call the login method for authentication
$jsonRpcRequest = new stdClass();
$jsonRpcRequest->jsonrpc = '2.0';
$jsonRpcRequest->method = 'login';
$jsonRpcRequest->params = array($merchantCode, gmdate('Y-m-d H:i:s'), $hash);
$jsonRpcRequest->id = $i++;

$sessionID = callRPC($jsonRpcRequest, $host);
$NewOrder = new stdClass();
$NewOrder->Language = 'fr';
$NewOrder->CustomerReference = 'APITEST';//uniqid('TESTCUSTOMER:');
$Product = new stdClass();
$Product->Code = 'my_subscription_1';
$Product->Quantity = 1;
$NewOrder->Items[] = $Product;
$Billing = new stdClass();
$Billing->Country = empty($billingDetailsArray['Country']) ? '' : $billingDetailsArray['Country'];
$Billing->City = empty($billingDetailsArray['City']) ? '' : $billingDetailsArray['City'];
$Billing->State = empty($billingDetailsArray['State']) ? '' : $billingDetailsArray['State'];
$Billing->PostalCode = empty($billingDetailsArray['PostalCode']) ? '' : $billingDetailsArray['PostalCode'];
$Billing->Email = empty($billingDetailsArray['Email']) ? '' : $billingDetailsArray['Email'];
$Billing->FirstName = empty($billingDetailsArray['FirstName']) ? '' : $billingDetailsArray['FirstName'];
$Billing->LastName = empty($billingDetailsArray['LastName']) ? '' : $billingDetailsArray['LastName'];
$Billing->Address = empty($billingDetailsArray['Address']) ? '' : $billingDetailsArray['Address'];
$NewOrder->BillingDetails = $Billing;
$Delivery = new stdClass();
$Delivery->Country = empty($deliveryDetailsArray['Country']) ? '' : $deliveryDetailsArray['Country'];
$Delivery->City = empty($deliveryDetailsArray['City']) ? '' : $deliveryDetailsArray['City'];
$Delivery->State = empty($deliveryDetailsArray['State']) ? '' : $deliveryDetailsArray['State'];
$Delivery->FirstName = empty($deliveryDetailsArray['FirstName']) ? '' : $deliveryDetailsArray['FirstName'];
$Delivery->LastName = empty($deliveryDetailsArray['LastName']) ? '' : $deliveryDetailsArray['LastName'];
$Delivery->Address = empty($deliveryDetailsArray['Address']) ? '' : $deliveryDetailsArray['Address'];
$Delivery->PostalCode = empty($deliveryDetailsArray['PostalCode']) ? '' : $deliveryDetailsArray['PostalCode'];
$NewOrder->DeliveryDetails = $Delivery;
$Payment = new stdClass();
$Payment->Type = 'PAYPAL_EXPRESS';
$Payment->Currency = 'EUR'; // for sku
$Payment->CustomerIP = '91.220.121.21';
$PayPal = new stdClass();
$PayPal->Email='customer@email.com';
$PayPal->Token = $token;
$PayPal->ReturnURL = 'http://' . $_SERVER['HTTP_HOST'] . '/api/place_order_api_json_paypal_express_response.php1';
$PayPal->CancelURL = 'http://' . $_SERVER['HTTP_HOST'] . '/api/place_order_api_json_paypal_express_response.php1' . '?cancel=true';
$Payment->PaymentMethod = $PayPal;
$NewOrder->PaymentDetails = $Payment;
$OrderField = new stdClass();
$OrderField->Code = 'ED5310';
$OrderField->Value = 'Value1';

// Call the method for placing the order
$jsonRpcRequest = new stdClass();
$jsonRpcRequest->jsonrpc = '2.0';
$jsonRpcRequest->method = 'placeOrder';
$jsonRpcRequest->params = array($sessionID, $NewOrder);
$jsonRpcRequest->id = $i++;
$APIOrderFullInfo = callRPC($jsonRpcRequest, $host);

var_dump($APIOrderFullInfo);

Overview

Use getPrice to extract cost information for a product/subscription plan, based on a specific list of options. 

Parameters

Response

Request

<?php

require ('PATH_TO_AUTH');

$CartItem = new stdClass();

$CartItem->Code = 'my_subscription_1';
$CartItem->Quantity = 1;

$CartItem->PriceOptions = array();
$CartItem->PriceOptions[0] = new stdClass();
 
$CartItem->PriceOptions[0]->Options = array();
$CartItem->PriceOptions[0]->Options[0] = new stdClass();
$CartItem->PriceOptions[0]->Options[0]->Value ="myPriceOptionCode";

/* $CartItem->Trial = new stdClass();
$CartItem->Trial->Period = 8;
$CartItem->Trial->Price = 0; */

$BillingDetails = NULL;
$Currency = 'USD';
$CouponCode = '123';
$PayType = 'CC';


$jsonRpcRequest = array (
'method' => 'getPrice',
'params' => array($sessionID, $CartItem, $BillingDetails, $Currency, $CouponCode, $PayType),
'id' => $i++,
'jsonrpc' => '2.0'
);

var_dump (callRPC((Object)$jsonRpcRequest, $host, true));

Overview

Place upgrade orders for subscriptions on behalf of your customers.

• Streamline upgrades for your existing customer base.
• Leverage payment data customers already shared with you to make the upgrade process frictionaless.

Availability

Contact 2Checkout directly to start using this functionality. 

Requirements

2Checkout strongly recommends PCI Data Security Standards (PCI DSS) compliance for this feature. 

For subscriptions to be upgradable, either by you or by the customer, the following requirements must be met:

• The product governing the subscription needs to feature a valid upgrade setup. You will only be able to upgrade subscriptions sold to your customers provided that you configured an upgrade for the product they purchased.
• The subscription up for upgrade needs to have been purchased using a credit or debit card. You won't be able to place subscription upgrade orders on behalf of your partners using payment methods other than credit/debit cards.

User privileges

You need to make sure that account users have the necessary rights to perform upgrades for customers. To enable access to this feature for users of your account, navigate to Account settings, and select Manage user access. Click on the Roles associated to specific accounts, and check the Place orders on behalf of customer under Orders & Reports option.

How to

Follow the steps below to place an upgrade order for a subscription.

1. Go to Orders & customers -> Subscriptions.
2. Run a search to find the item you want upgraded and click View to access the Subscription details page.
3. Click the Upgrade subscription button.
4. Select one of the two options available
   
   • With current payment information - the 2Checkout system uses the cardholder details currently associated with the subscription in order to bill and charge the customer for the upgrade.
   • With new payment information - you need to supply new cardholder information in order for 2Checkout to bill and charge the customer for the upgrade.

With current payment information

1. Select With current payment information.
2. Optional: Enter a valid coupon code to provide a discount. Note: the code must be associated with an already defined promotion. Click Continue.
3. On the next screen select the upgrade options and click Upgrade now.
4. You'll be redirected to the Checkout page which features all the necessary info pre-filled. You have the option of modifying the details, including the product quantity. Check the details available and click Place order to purchase the upgrade on behalf of the customer.
5. A new upgrade order will become available in the 2Checkout system for the customer's subscription. You'll get information on the new order on the Finish page.

With new payment information

1. Select With new payment information.
2. Optional: Enter a valid coupon code to provide a discount. Note: the code must be associated with an already defined promotion.
3. On the next screen select the upgrade options and click Upgrade now.
4. You'll be redirected to the Checkout page which features all the necessary info pre-filled, with the exception of the payment details, which you'll need to provide at step 5. You have the option of modifying the info on this page, including the product quantity.
5. Review the billing and delivery info, and enter new cardholder data. 2Checkout will use the credit/debit card provided here to bill and charge the customer for the subscription upgrade. Click Place order to purchase the upgrade on behalf of the customer.
6. A new upgrade order will become available in the 2Checkout system for the customer's subscription. You'll get information on the new order on the Finish page.

After you purchase an upgrade on behalf of one of your shoppers, the details page of the subscription used by the customer will be updated to reflect the details of the upgrade operation.

Overview

Renew a subscription in the Avangate system on-demand, controlling the number of days, price and currency of the extension. Use the renewSubscription method renew a subscription.

Parameters

Response

Request

<?php

require ('PATH_TO_AUTH');

$subscriptionReference = 'YOUR_SUBSCRIPTION_REFERENCE';
$days = 4;
$price = 50;
$currency = 'eur';

$jsonRpcRequest = array (
'method' => 'renewSubscription',
'params' => array($sessionID, $subscriptionReference, $days, $price, $currency),
'id' => $i++,
'jsonrpc' => '2.0');

var_dump (callRPC((Object)$jsonRpcRequest, $host, true));

Overview

Use the getPriceOptionGroup method to extract information about a specific price option group that you configured.

Parameters

Response

Request

<?php

$host   = "https://api.avangate.com";
$client = new SoapClient($host . "/soap/3.0/?wsdl", array(
    'location' => $host . "/soap/3.0/",
    "stream_context" => stream_context_create(array(
        'ssl' => array(
            'verify_peer' => false,
            'verify_peer_name' => false
        )
    ))
));


function hmac($key, $data)
{
    $b = 64; // byte length for md5
    if (strlen($key) > $b) {
        $key = pack("H*", md5($key));
    }
    
    $key    = str_pad($key, $b, chr(0x00));
    $ipad   = str_pad('', $b, chr(0x36));
    $opad   = str_pad('', $b, chr(0x5c));
    $k_ipad = $key ^ $ipad;
    $k_opad = $key ^ $opad;
    return md5($k_opad . pack("H*", md5($k_ipad . $data)));
}

$merchantCode = "YOURCODE123"; //your account's merchant code available in the 'System settings' area of the cPanel: https://secure.2checkout.com/cpanel/account_settings.php
$key          = "SECRET_KEY"; //your account's secret key available in the 'System settings' area of the cPanel: https://secure.2checkout.com/cpanel/account_settings.php
$now          = gmdate('Y-m-d H:i:s'); //date_default_timezone_set('UTC')

$string = strlen($merchantCode) . $merchantCode . strlen($now) . $now;
$hash   = hmac($key, $string);

try {
    $sessionID = $client->login($merchantCode, $now, $hash);
}

catch (SoapFault $e) {
    echo "Authentication: " . $e->getMessage();
    exit;
}

$GroupCode = 'USERS';

try {
    $existentPriceOptionGroup = $client->getPriceOptionGroup($sessionID, $GroupCode);
}

catch (SoapFault $e) {
    echo "existentPriceOptionGroup: " . $e->getMessage();
    exit;
}

var_dump("existentPriceOptionGroup", $existentPriceOptionGroup);

?>