PHP Multiple Concurrent Sessions Per User

Question

I\'m working on a web app using PHP on Apache. $_SESSION variables are used quite a bit for the information that must persist across pages.

We need each user to be a

Answer 1

This would be very difficult to do, if at all possible.

Sessions should not have to worry about which tab they are in.

Also, what happens if session 1 in tab 1 opens a new window? Is it a new session?