Up to date tutorial on php mysql user / group management required

Hey all

I am looking for an up to date tutorial (online / book) that will help me develop a user managment system that can handle groups as well.

I’ve read numerous articles online and they all seem really dated (I’m assuming things have moved on!)

The scal e of sites I’ve built in the past has only required a simple .htaccess file to handle this, but I’m increasingly requiring this functionality.

Can anyone point me in the right direction?

Many thanks