PayWay Rest API: Create Refund From PayWay Payment

You can visit PayWay rest api documentation page:

https://www.payway.com.au/docs/rest.html#refund-a-payment

PayWay Rest API: Check if Rest API credentials are valid

PayWay Rest API: Create Customer Create Token

<?php
include_once "CurlExecutor.php";

define("BASE_URL", "https://api.payway.com.au/rest/v1");
define("MERCHANT_ID", "TEST");
define("PRIVATE_KEY", "T10487_SEC_...");
define("PUBLIC_KEY", "T10487_PUB_...");

createRefundOfPayment();

function createRefundOfPayment() {
    $headers[] = "Authorization: Basic " . base64_encode(PRIVATE_KEY . ":");
    $headers[] = "Content-Type: application/x-www-form-urlencoded";

    $post = array(
        "parentTransactionId" => "1956258559",
        "transactionType" => "refund",
        "principalAmount" => "23.45",
        "orderNumber" => "RefundIdentification"
    );

    $result = CurlExecutor::execute(BASE_URL . "/transactions", "POST", $post, null, $headers);
    $result["response"] = json_decode($result["response"]);
    CurlExecutor::prettyPrint($result);
}
?>

And output is below:

Array
(
    [code] => 201
    [response] => stdClass Object
        (
            [transactionId] => 1958000143
            [receiptNumber] => 1958000143
            [status] => approved
            [responseCode] => 08
            [responseText] => Honour with identification
            [transactionType] => refund
            [customerNumber] => 5
            [customerName] => Hexa Lucio
            [customerEmail] => hexa@bitmascot.com
            [orderNumber] => RefundIdentification
            [currency] => aud
            [principalAmount] => -23.45
            [surchargeAmount] => 0
            [paymentAmount] => -23.45
            [paymentMethod] => creditCard
            [creditCard] => stdClass Object
                (
                    [cardNumber] => 456471...004
                    [expiryDateMonth] => 02
                    [expiryDateYear] => 19
                    [cardScheme] => visa
                    [cardholderName] => Hexa Lucio Tony
                )

            [merchant] => stdClass Object
                (
                    [merchantId] => TEST
                    [merchantName] => Test Merchant
                    [links] => Array
                        (
                            [0] => stdClass Object
                                (
                                    [rel] => self
                                    [href] => https://api.payway.com.au/rest/v1/merchants/TEST
                                )

                        )

                )

            [transactionDateTime] => 10 Jun 2017 13:24 AEST
            [settlementDate] => 10 Jun 2017
            [parentTransaction] => stdClass Object
                (
                    [transactionId] => 1956258559
                    [receiptNumber] => 1956258559
                    [status] => approved
                    [transactionType] => payment
                    [customerNumber] => 5
                    [orderNumber] => INV-GGO-ABA-460
                    [currency] => aud
                    [paymentAmount] => 99.25
                    [settlementDate] => 08 Jun 2017
                )

            [isVoidable] => 1
            [isRefundable] => 
            [links] => Array
                (
                    [0] => stdClass Object
                        (
                            [rel] => self
                            [href] => https://api.payway.com.au/rest/v1/transactions/1958000143
                        )

                    [1] => stdClass Object
                        (
                            [rel] => void
                            [href] => https://api.payway.com.au/transactions/1958000143/void
                        )

                    [2] => stdClass Object
                        (
                            [rel] => parent
                            [href] => https://api.payway.com.au/rest/v1/transactions/1956258559
                        )

                )

        )

)