1. Go to this page and download the library: Download asko/collection 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/ */
asko / collection example snippets
use Asko\Collection\Collection;
$collection = new Collection([1, 2, 3, 4, 5]);