This is a simple framework using Wordpress; you can easily build a framework using WordPress resources without using Symfony, CakePHP, or Laravel.
First, you need to install WordPress. After that do below commands on wp-content/themes
$ cd wp-content/themes/twentytwentyone
$ git clone https://github.com/kmusiclife/WPFP.git
$ vim functions.php
content is
include('WPFP/init.php');
Access below URL http://loclahost/page/sample-page/
You will see a text: "SAMPLE PAGE" include your header and footer of your theme.