1. Go to this page and download the library: Download czubehead/bootstrap-4-forms 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/ */
czubehead / bootstrap-4-forms example snippets
$form = new BootstrapForm;
$form->renderMode = RenderMode::Vertical;