That contains all the users.
I am using sessions to verify users, and on the login page, I check to make sure that the username and password is correct and that there is only one, then I set a session variable that I check on each page of the site.
My question is, I would like to instead of checking: isset(session). use something that verifies that the session is not only set, but that it matches a user from the Database. (other than on the login page) I set two sessions on the login page. "loggedin" and "username" where username is the actual username. So i would need to check the session "username" to make sure it is the DB. But I don't know how to do that.