Overview

Use this object to retrieve session content and to guide shoppers through advanced payment flows, such as those of PayPal, PayPal Express, Wire, Check, etc. 

Attributes

Overview

Use the updatePriceOptionGroup method to update/edit an existing price options group you configured for your account.

• Price options intervals cannot overlap. 

Parameters

You cannot update the

• Code of the price options group. 

Response

bool(true)

Request

<?php
 
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($ResponseString)) {
//        var_dump($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 = "YOURCODE12345";//your account's merchant code available in the 'System settings' area of the cPanel: https://secure.avangate.com/cpanel/account_settings.php
$key = "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);
 
$SearchOptions = new stdClass ();
$SearchOptions->Name = 'New Users from API';
 
$SearchOptions->Types = array('INTERVAL', 'RADIO'); //RADIO, CHECKBOX, INTERVAL, COMBO, INTERVAL
 
$SearchOptions->Limit = 10;
$SearchOptions->Page = 1;
 
$jsonRpcRequest = array (
'jsonrpc' => '2.0',
'id' => $i++,
'method' => 'searchPriceOptionGroups',
'params' => array($sessionID, $SearchOptions)
);
 
$existentPriceOptions = callRPC((Object)$jsonRpcRequest, $host, true);
var_dump ($existentPriceOptions);
 
$updatedPriceOptions = $existentPriceOptions[0];
 
$existentPriceOptions[0]->Translations[0]->Name = 'New Users from API3';
$existentPriceOptions[0]->Translations[0]->Language = 'EN';
 
$updatedPriceOptions = $existentPriceOptions[0];
echo "$updatedPriceOptions->Name";
 
$jsonRpcRequest = array (
'jsonrpc' => '2.0',
'id' => $i++,
'method' => 'updatePriceOptionGroup',
'params' => array($sessionID, $updatedPriceOptions)
);
var_dump (callRPC((Object)$jsonRpcRequest, $host, true));
 
 
?>

Overview

Use the addPromotionTranslations method to add localized texts to existing promotions.

Parameters

Response

Request

<?php

require ('PATH_TO_AUTH');

// Promotion code corresponding to the promotion you want to add translations to
$promotionCode = '';

// Defining a translation for German shoppers
$promotionTranslation1 = new stdClass;
$promotionTranslation1->Language = 'de'; 
$promotionTranslation1->Name = 'YOUR_GERMAN_PROMOTION_NAME';

// Defining a translation for Bulgarian shoppers
$promotionTranslation2 = new stdClass;
$promotionTranslation2->Language = 'bg'; 
$promotionTranslation2->Name = 'YOUR_BULGARIAN_PROMOTION_NAME';

$translations = [$promotionTranslation1, $promotionTranslation2];

try {
    $updatedPromotion = $client->addPromotionTranslations($promotionCode, $translations);
}

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

var_dump("UpdatedPromotion", $updatedPromotion);

Overview

Use the createCustomer method to add the details of a customer entity into the Avangate system. By default, customer status is Inactive until you assign a specific subscription to the customer. Following that action, customer status reflects the status of the attached subscription(s).

Parameters

Request

<?php

require ('PATH_TO_AUTH');

$newCustomer = new stdClass();
$newCustomer->AvangateCustomerReference = null;
$newCustomer->ExternalCustomerReference = 'ThisIsATestReference123456';
$newCustomer->FirstName = 'NewCustomer';
$newCustomer->LastName = 'NewCustomerLastName';
$newCustomer->Company = null;
$newCustomer->FiscalCode = null;
$newCustomer->Address1 = 'Address';
$newCustomer->Address2 = null;
$newCustomer->City = 'LA';
$newCustomer->Zip = '90210';
$newCustomer->CountryCode = 'us';
$newCustomer->Phone = null;
$newCustomer->Fax = null;
$newCustomer->Email = 'newcustomer@email.com';
$newCustomer->ExistingCards = null;
$newCustomer->Enabled = null;
$newCustomer->Trial = null;
$newCustomer->Language = 'en';

$jsonRpcRequest = array (
'method' => 'createCustomer',
'params' => array($sessionID, $newCustomer),
'id' => $i++,
'jsonrpc' => '2.0');

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

Response

Overview

Use the updateCustomerInformation method to update the details of a customer entity from the Avangate system.

Parameters

Response

Request

<?php
 
 
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 login
$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);
 
var_dump($sessionID);
$customerReference = 298084139;
$externalCustomerReference = 'Apitest123456'; //Optional, but if you include it it needs to belong to the same customer as the internal Avangate customer reference
$jsonRpcRequest = array (
'method' => 'getCustomerInformation',
'params' => array($sessionID, $customerReference, $externalCustomerReference),
'id' => $i++,
'jsonrpc' => '2.0');
$existingCustomer = callRPC((Object)$jsonRpcRequest, $host, true);
$existingCustomer->Email = 'newemailaddress@email.com';

$jsonRpcRequest = array (
'method' => 'updateCustomerInformation',
'params' => array($sessionID, $existingCustomer),
'id' => $i++,
'jsonrpc' => '2.0');

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

Overview

Use the updatePromotion method via SOAP API 4.0 to alter the details of an existing promotion.

Parameters

Response

Request

<?php 

class Client
{
    protected static $merchantCode;
    protected static $loginDate;
    protected static $hash;
    protected static $baseUrl;
    protected static $callCount = 0;
    protected static $sessionId = '';

    protected static $client;

    public static function setCredentials($code, $key)
    {
        static::$merchantCode = $code;
        static::$loginDate = gmdate('Y-m-d H:i:s');
        static::$hash = hash_hmac('md5', strlen($code) . $code . strlen(static::$loginDate) . static::$loginDate, $key);
        static::$sessionId = static::login();
    }

    public static function setBaseUrl($url)
    {
        static::$baseUrl = $url;
    }

    public static function login()
    {
        $client = static::getClient();
        return $client->login(static::$merchantCode, static::$loginDate, static::$hash);
    }

    public static function __callStatic($name, $arguments = array())
    {
        $client = static::getClient();

        array_unshift($arguments, static::$sessionId);
        $response = call_user_func_array(array($client, $name), $arguments);

        return $response;
    }

    protected static function getClient()
    {
        $opts = array(
            'http'=> ['user_agent' => 'PHPSoapClient'],
            'ssl' => [
                'verify_peer' => false,
                'verify_peer_name' => false,
            ],
        );

        if (null === static::$client) {
            static::$client = new \SoapClient(static::$baseUrl . '?wsdl', [
                'location' => static::$baseUrl,
                'cache_wsdl' => WSDL_CACHE_NONE,
                'stream_context' => stream_context_create($opts),
            ]);
        }

        return static::$client;
    }
}

Client::setBaseUrl('https://api.2checkout.com/soap/3.1/');
Client::setCredentials('YOUR_MERCHANT_CODE', 'YOUR_SECRET_KEY');
Client::login();

// Retrieve promotion details
$promotionCode = 'PROMOTION_CODE'; // code of the promotion that you want to update
$existingPromotion = Client::getPromotion($promotionCode); // Keep the promotion you want to update in $existingPromotion

// Set the fields to update
$existingPromotion->Name = 'YOUR_UPDATED_NAME';

// Update the promotion
$response = Client::updatePromotion($existingPromotion);
var_dump($response);

Overview

Use the placeOrder method to create an order and collect the payment.

Supported payment methods

1. Credit/Debit cards: Visa, Visaelectron, MasterCard, Maestro, Amex, Discover, Dankort, Cartebleue, JCB. 2Checkout supports local Brazilian cards.
2. PayPal and PayPal Express
3. Puchase Order
4. Wire
5. Check
6. Previous order references - In addition to the payment methods enumerated above, 2Checkout also supports 1-click purchase flows in which you use valid previous order references belonging to returning customers to pay for new orders with their previously used cards and PayPal accounts. 

For anti-fraud purposes, 2Checkout limits the number of successive purchases made using the same credit card.

Requirements

As reseller of your products, 2Checkout must validate your compliance with the PCI requirements, making sure you meet Payment Card Industry (PCI) standards when using the New Purchase 2Checkout API. You alone control the level of complexity of your PCI compliance. 

Details on some of the most frequent PCI compliance levels for ecommerce businesses and the associated steps you need to follow to obtain the compliance and be able to start using the New Purchase 2Checkout API are available here: New Purchase Avangate API PCI DSS Requirements.

You're required to include the following text when using 2Checkout API-client side encryption 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. 

Currency support

Check with 2Checkout support for a list of currencies available for each payment method. 

Parameters

Response

Request

<?php
 
//The following script let's you place an new order with Credit/Debit cards as the payment method
 
$host   = "https://api.2Checkout.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 = "YOUR_MERCHANT_CODE";// your account's merchant code available in the 'System settings' area of the cPanel.
$key = "YOUR_SECRET_KEY";// your account's secret key available in the 'System settings' area of the cPanel.
$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;
}
$Order = new stdClass();
$Order->RefNo = NULL;
$Order->Currency = 'usd';
$Order->Country = 'US';
$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 = 'us';
$Order->BillingDetails->State = 'California';
$Order->BillingDetails->City = 'LA';
$Order->BillingDetails->Address1 = 'Address example';
$Order->BillingDetails->Address2 = NULL;
$Order->BillingDetails->Zip = '90210';
$Order->BillingDetails->Email = 'customer@email.com';
$Order->BillingDetails->Phone = NULL;
$Order->BillingDetails->Company = NULL;
$Order->DeliveryDetails = NULL;
$Order->PaymentDetails = new stdClass ();
$Order->PaymentDetails->Type = 'TEST';
$Order->PaymentDetails->Currency = 'usd';
$Order->PaymentDetails->PaymentMethod = new stdClass ();
$Order->PaymentDetails->CustomerIP = '10.10.10.10';
$Order->PaymentDetails->PaymentMethod->RecurringEnabled = true;
$Order->PaymentDetails->PaymentMethod->CardNumber = "4111111111111111";
$Order->PaymentDetails->PaymentMethod->CardType = 'visa';
$Order->PaymentDetails->PaymentMethod->ExpirationYear = '2019';
$Order->PaymentDetails->PaymentMethod->ExpirationMonth = '12';
$Order->PaymentDetails->PaymentMethod->HolderName = 'John';
$Order->PaymentDetails->PaymentMethod->CardNumberTime = 83.21; // can be null - high value in seconds is a red flag for fraud attempts.
$Order->PaymentDetails->PaymentMethod->HolderNameTime = 13.35; // can be null - high value in seconds is a red flag for fraud attempts.
$Order->PaymentDetails->PaymentMethod->CCID = '123';
$Order->Promotions = NULL;
$Order->AdditionalFields = NULL;
$Order->LocalTime = NULL;
$Order->GiftDetails = NULL;
try {
    $newOrder = $client->placeOrder($sessionID, $Order);
}
catch (SoapFault $e) {
    echo "newOrder: " . $e->getMessage();
    exit;
}
var_dump("newOrder", $newOrder);
?>

Overview

Avangate supports 1-click purchases for returning customers who paid for their previous orders with:

• Credit/Debit cards
• PayPal

How does this work?

1. Identify returning customers. 
2. Access data on the previous purchases of returning customers.
3. Validate previous order references for 1-click purchase scenarios using the isValidOrderReferencemethod.
4. Place a new order using a valid previous order reference as the payment method. 
5. Avangate charges returning customers using their payment-on-file information, either a card or their PayPal account. 

Availability

Select Avangate accounts. Contact Avangate for more details. 

Requirements

• Use only references of previous orders  with one of the following statuses AUTHRECEIVED or COMPLETE.
• The email address of the BillingDetails object is mandatory and it needs to match the email address used as a part of the billing details of the initial order whose reference you're now using to place a new order. Avangate checks whether the email addresses are identical, and throws an error if they're not, blocking the order placement process. Note: You need to provide only the email address of the shopper, and can ignore the rest of the required customer billing information. If you enter any billing details in addition to the email address, you'll have to provide all information required in the BillingDetails object.

Parameters

Response

Request

<?php
echo "<pre>";
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 = "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 = "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(date('Y-m-d H:i:s')) . date('Y-m-d H:i:s');
$hash = hash_hmac('md5', $string, $key);
 
$i = 1; // counter for api calls
// call login
$jsonRpcRequest = new stdClass();
$jsonRpcRequest->jsonrpc = '2.0';
$jsonRpcRequest->method = 'login';
$jsonRpcRequest->params = array($merchantCode, date('Y-m-d H:i:s'), $hash);
$jsonRpcRequest->id = $i++;
 
$sessionID = callRPC($jsonRpcRequest, $host);
 
var_dump($sessionID);
$orderReference = '45452071';
$jsonRpcRequest = array (
'method' => 'isValidOrderReference',
'params' => array($sessionID, $orderReference),
'id' => $i++,
'jsonrpc' => '2.0'
);
var_dump (callRPC((Object)$jsonRpcRequest, $host, true));
$jsonRpcRequest = array (
'method' => 'getOrder',
'params' => array($sessionID, $orderReference),
'id' => $i++,
'jsonrpc' => '2.0'
);
$oldOrderExistent = callRPC((Object)$jsonRpcRequest, $host, true);
$Order = new stdClass();
$Order->RefNo = NULL;
$Order->Currency = 'usd';
$Order->Country = 'US';
$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->Email = $oldOrderExistent->BillingDetails->Email;;
$Order->DeliveryDetails = NULL;
$Order->PaymentDetails = new stdClass ();
$Order->PaymentDetails->Type = 'PREVIOUS_ORDER';
$Order->PaymentDetails->Currency = 'usd';
$Order->PaymentDetails->PaymentMethod = new stdClass ();
$Order->PaymentDetails->CustomerIP = '10.10.10.10';
$Order->PaymentDetails->PaymentMethod->RecurringEnabled = true;
$Order->PaymentDetails->PaymentMethod->RefNo = $orderReference;
$Order->Promotions = NULL;
$Order->AdditionalFields = NULL;
$Order->LocalTime = NULL;
$Order->GiftDetails = NULL;

$jsonRpcRequest = array (
'method' => 'placeOrder',
'params' => array($sessionID, $Order),
'id' => $i++,
'jsonrpc' => '2.0'
);
var_dump (callRPC((Object)$jsonRpcRequest, $host, true));

Overview

Use the updatePromotion method to alter the details of an existing promotion.

Parameters

Response

Request

<?php
require ('PATH_TO_AUTH'); 

// Retrieve promotion details

$promotionCode = 'PROMOTION_CODE'; // code of the promotion that you want to update

try {
    $Discount = $client->getPromotion($sessionID, $promotionCode);
}
catch (SoapFault $e) {
    echo "Discount: " . $e->getMessage();
    exit;
}

var_dump("Discount", $Discount);

// Keep the promotion you want to update in $existingPromotion
try{
    $existingPromotion = $client->getPromotion($sessionID, $promotionCode);
}

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

// Set the fields to update 
$existingPromotion->Description = 'Updated description';

// Update the promotion
try {
    $updatedPromotion = $client->updatePromotion($sessionID, $existingPromotion);
}

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

var_dump("UpdatedPromotion", $updatedPromotion);

?>

Overview

Use the addPromotionSources method via JSON-RPC API 4.0 to define new sources for an existing promotion.

Parameters

Response

Request

<?php

function callRPC($Request, $host, $Debug = true) {
    $curl = curl_init($host);
    curl_setopt($curl, CURLOPT_POST, 1);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($curl, CURLOPT_VERBOSE, true);
    curl_setopt($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)) {
        var_dump($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/3.1/';

$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;

$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);

// Promotion code corresponding to the promotion you want to add sources to
$promotionCode = '';

// Sources array with the source values 
$sources = ['source1', 'source2'];

$jsonRpcRequest = array (
'jsonrpc' => '2.0',
'id' => $i++,
'method' => 'addPromotionSources',
'params' => array($sessionID, $promotionCode, $sources)
);
var_dump (callRPC($jsonRpcRequest, $host));