Im using PostgreSQL DB. I know that multiple users can login with a Database setup.. but how , thats what I wanted to know. nyway thnx for replying!!

Can nyone help me with this multi user login from the same system.
Multiple users must be able to login from the same system at a time.... in PHP. Sessions must be used. Please donot suggest these following methods.
1 . Using a session cookie and passsing a unique id for each user using GET method. This fails when the url breaks at some page. the next page from then its not propogated.
2.Storing the users logged_in in the database...