1. Go to this page and download the library: Download brick/postcode 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/ */
brick / postcode example snippets
use Brick\Postcode\PostcodeFormatter;
$formatter = new PostcodeFormatter();
$formatter->format('GB', 'WC2E9RZ'); // WC2E 9RZ
$formatter->format('US', '337014313'); // 33701-4313