beforeFilter(): beforeFilter function  run before every action in the controller. It’s the right place to check for an active session or inspect user permissions.

beforeRender():beforeRendor function  called after controller action logic but before the view is rendered. This function is not often used, but may be required If you are calling render() manually before the end of a given action.

afterFilter(): afterFilter function  called after every controller action but after rendering is done. It is the last controller method to run.