1. Go to this page and download the library: Download markette/gopay-simple library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
markette / gopay-simple example snippets
use Markette\GopaySimple\GopaySimple;
$gopay = new GopaySimple($clientId, $clientSecret);
# For testing purpose
$gopay->setMode($gopay::DEV);