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Create fixed discount

Last updated: 29-Jun-2017
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Use setPromotionDiscount to set a fixed promotion discount.


Parameter Type/Description


Required (string)


Output of the Login method.


Required (string)


The code corresponding to the promotion that you want to set the discount for.





Required (String)



Discount type:

  • PERCENT, use in combination with Value
  • FIXED, use in combination with Values and DefaultCurrency


Value / Values

Required (Int / Array of objects)



  • Value = Int, determines the discount percentage from 0 to 100
  • Values = Array of Value objects




Required (Object)





Required (String)





Discount currency ISO code (ISO 4217).





Required (Int)





Discount amount in corresponding currency.



Required (String)



Default discount currency ISO code (ISO 4217).


Parameter Type/Description
promotionDiscount Object



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) {
    $ResponseString = curl_exec($curl);
    if ($Debug) {
    if (!empty($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 = '';

$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:

$string = strlen($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 assigned to the promotion you want to update
$promotionCode = '';

$promotionDiscount = new stdClass;
$promotionDiscount->Type = 'FIXED';
$promotionDiscount->DefaultCurrency = 'USD';

// Define the first discount object for a specific currency
$discount1 = new stdClass;
$discount1->Currency = 'USD';
$discount1->Amount = 22;

// Define the second discount object for a specific currency
$discount2 = new stdClass;
$discount2->Currency = 'EUR';
$discount2->Amount = 50;

$promotionDiscount->Values = [$discount1, $discount2];

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