Codeigniter info

Creating a Custom Controller and View in CodeIgniter

https://selftaughtcoders.com/controller-view-codeigniter/

Configuring a Database in CodeIgniter

We’ll be utilizing our database very frequently, so we’re going to “auto-load” CI’s database library, which will make it automatically available throughout the app.

https://selftaughtcoders.com/configuring-database-codeigniter/

Learn How To Integrate Bootstrap 4 in Codeigniter

https://blog.eduonix.com/web-programming-tutorials/learn-integrate-bootstrap-4-codeigniter/

Autoload multiple databases:
https://forum.codeigniter.com/thread-772.html

Removing the index.php file, add .htaccess to root

https://www.codeigniter.com/user_guide/general/urls.html