1. Go to this page and download the library: Download gufy/currency 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/ */
gufy / currency example snippets
Gufy\Currency\OpenExchange;
$api = new OpenExchange("your-app-id");
$rates = $api->rates();