// configure client & request settings
GatewayConfig config = new GatewayConfig();
config.setMerchantId("MerchantId");
config.setAccountId("internet");
config.setSharedSecret("secret");
config.setServiceUrl("https://api.sandbox.realexpayments.com/epage-remote.cgi");
ServicesContainer.configureService(config);

// create the card object
CreditCardData card = new CreditCardData();
card.setNumber("4263970000005262");
card.setExpMonth(12);
card.setExpYear(2025);
card.setCvn("131");
card.setCardHolderName("James Mason");

try {
   // process an auto-settle authorization
   Transaction response = card.charge(new BigDecimal("19.99"))
                           .withCurrency("EUR")
                           .execute();

   String result = response.getResponseCode(); // 00 == Success
   String message = response.getResponseMessage(); // [ test system ] AUTHORISED

   // get the details to save to the DB for future requests
   String orderId = response.getOrderId(); // ezJDQjhENTZBLTdCNzNDQw
   String authCode = response.getAuthorizationCode(); // 12345
   String paymentsReference = response.getTransactionId(); // pasref 14622680939731425
   String schemeReferenceData = response.getSchemeId(); // MMC0F00YE4000000715
} 

catch (ApiException exce) {
   // TODO: add your error handling here
}

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

use GlobalPayments\Api\ServiceConfigs\Gateways\GpEcomConfig;
use GlobalPayments\Api\ServicesContainer;
use GlobalPayments\Api\Entities\Exceptions\ApiException;
use GlobalPayments\Api\PaymentMethods\CreditCardData;

$config = new GpEcomConfig();
$config->merchantId = "MerchantId";
$config->accountId = "internet";
$config->sharedSecret = "secret";
$config->serviceUrl = "https://api.sandbox.realexpayments.com/epage-remote.cgi";
ServicesContainer::configureService($config);

// create the card object
$card = new CreditCardData();
$card->number = "4263970000005262";
$card->expMonth = 12;
$card->expYear = 2025;
$card->cvn = "131";
$card->cardHolderName = "James Mason";

try {
   // process an auto-capture authorization
   $response = $card->charge(19.99)
      ->withCurrency("EUR")
      ->execute();
} catch (ApiException $e) {
   // TODO: Add your error handling here
}

if (isset($response)) {
   $result = $response->responseCode; // 00 == Success
   $message = $response->responseMessage; // [ test system ] AUTHORISED

   // get the details to save to the DB for future requests
   $orderId = $response->orderId; // N6qsk4kYRZihmPrTXWYS6g
   $authCode = $response->authorizationCode; // 12345
   $paymentsReference = $response->transactionId; // pasref: 14610544313177922
   $schemeReferenceData = $response->schemeId; // MMC0F00YE4000000715
}

// configure client & request settings
ServicesContainer.ConfigureService(new GpEcomConfig
{
   MerchantId = "MerchantId",
   AccountId = "internet",
   SharedSecret = "secret",
   ServiceUrl = "https://api.sandbox.realexpayments.com/epage-remote.cgi"
});

// create the card object
var card = new CreditCardData
{
   Number = "4263970000005262",
   ExpMonth = 12,
   ExpYear = 2025,
   Cvn = "131",
   CardHolderName = "James Mason"
};

try
{
   // process an auto-capture authorization
   Transaction response = card.Charge(129.99m)
      .WithCurrency("EUR")
      .Execute();

   var result = response.ResponseCode; // 00 == Success
   var message = response.ResponseMessage; // [ test system ] AUTHORISED

   // get the response details to save to the DB for future requests
   var orderId = response.OrderId; // ezJDQjhENTZBLTdCNzNDQw
   var authCode = response.AuthorizationCode; // 12345
   var paymentsReference = response.TransactionId; // pasref 14622680939731425
   var schemeReferenceData = response.SchemeId; // MMC0F00YE4000000715
}

catch (ApiException exce)
{
   // TODO: add your error handling here
}

<?xml version="1.0" encoding="UTF-8"?>
<request type="auth" timestamp="20180613141207">
  <merchantid>MerchantId</merchantid>
  <account>internet</account>
  <channel>ECOM</channel>
  <orderid>N6qsk4kYRZihmPrTXWYS6g</orderid>
  <amount currency="EUR">1001</amount>
  <card>
    <number>4263970000005262</number>
    <expdate>0425</expdate>
    <chname>James Mason</chname>
    <type>VISA</type>
    <cvn>
      <number>123</number>
      <presind>1</presind>
    </cvn>
  </card>
  <autosettle flag="1"/>
  <sha1hash>87707637a34ba651b6185718c863abc64b673f20</sha1hash>
</request>