1. Go to this page and download the library: Download beige/psr-11 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/ */
beige / psr-11 example snippets
use Beige\Psr11\Container;
$container = new Container();