1. Go to this page and download the library: Download luffy/randomizer 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/ */
luffy / randomizer example snippets
use luffy\random\Randomizer;
$generator=new Randomizer('449c131f-0171-401e-80c9-xxxxxxxxx'); //参数是你在random.org申请的API key