1. Go to this page and download the library: Download sun/flash 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/ */
sun / flash example snippets
$flash = new Sun\Flash;
$flash->success('Hello');
$flash->error('Whoops! There were some problems with your input.');