1. Go to this page and download the library: Download vietstars/client-detect 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/ */
use Vietstars\ClientDetect\Client;
$client = new Client();
$client->setUserAgent('Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.13+ (KHTML, like Gecko) Version/5.1.7 Safari/534.57.2');
$client->setHttpHeaders($headers);