1. Go to this page and download the library: Download hxm/database-system-config 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/ */
hxm / database-system-config example snippets
return [
'merge_config' => true, // change to false to disable it
//If you disable it, you will not be able to access the value directly through the system config($key)
];