1. Go to this page and download the library: Download creative-workflow/php 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/ */
creative-workflow / php example snippets
bower install --save creative-workflow.php
or
composer low/lib-php.git ./wordpress/wp-content/themes/child/lib/cw/php