Setting and Getting Session and Flashdata

Can anybody guide me how to set and retrieve session and flashdata?

I initialized session base controller and when I try to set and get on User controller, I am getting error saying "ErrorExceptoin": undefined variable $session when using this snippet below

PHP Code:

$session->set('user', 'someone'); 


I was also facing same problem. I got my answer, thaks a lot

Hello Bro, i have joined this community to improve my skills not for spam