Simple CRUD application with PDF generate as per requirements

I need simple CRUD application where i add university, class, subject and chapter with questions and asnwers in admin panel with login and add simple users at admin side. And need just one simple landing page where i will just select university, class, subject and chapter on this basis i get all the questions.
Technology stack PHP, MySQL and Codeigniter 3 or 4.
More info required just ping me i will give more details.