Problem with updating session data

I labored under the impression that I should create my own authentication library for a very long time before I realized that it is far more complex than it might seem at first. Even if my system worked, and seemed secure, it was only after quite some time that I realised it was not. This is not anything to do with CI, it is to do with online security. I now use 'ion auth', and it has been excellent. There is a learning curve, but it is a very well written library with tons of useful (and difficult to implement yourself) features including remember me.

https://github.com/benedmunds/CodeIgniter-Ion-Auth

It is a great experience to write your own. But I would strongly recommend that you leave the authorisation and authentication to people that are, if not expert, certainly well versed, in site security. And unlike other frameworks, CI allows you to choose and implement any system that you want.

Best wishes,

Paul.