simple-php-router/demo-project/app/Controllers/DefaultController.php

<?php
namespace Demo\Controllers;

class DefaultController
{
	public function index()
	{
		// implement
		echo sprintf('DefaultController -> index (?fun=%s)', input()->get('fun'));
	}

	public function contact()
	{
		echo 'DefaultController -> contact';
	}

	public function companies($id = null)
	{
		echo 'DefaultController -> companies -> id: ' . $id;
	}

	public function notFound()
	{
		echo 'Page not found';
	}

}