How to change session time out in opencart 2.X?

问题

I am using opencart version 2.1.0.1 and i wants change Admin session out time.

Basically i am looking for the solution for if system is idle from period of time then it should log out.

Thanks..

来源：https://stackoverflow.com/questions/35617871/how-to-change-session-time-out-in-opencart-2-x