1. Go to this page and download the library: Download stefna/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/ */
$config = new \Stefna\Config\FileConfig('path-to-php/config.php');
// config file is not read until it's needed
$config->getBool('nested.bool-key') === false;
$config->getString('config-key') === 'value';