session variable question

[182x]

Hey guys, I am using session variables in order to insert the username into the database when the user submits a form. I was just wondering as I don't fully understand session variables could this cause any problems? For example if one user logs in and then another will the first users session vars be overwritten?

(I am only making a localhost site which is run locally, so if I did this on my machine logging in two different users one in firefox one in ie would this also be ok?)

Thanks.

[NogDog]

Each user receives a cookie with a PHP-generated unique session ID, and that session ID is used to associate that user with the session data, which is saved in a file that uses that session ID as part of its name, keeping each user's session data separate from all others.

[182x]

thanks, another question I have about session variables would be if for example my username was 'testUsername' and I logged in with that username and didn't logout using session_destroy and someone else used the login page with a shorter username for example 'test' would the session store the username as test or because it didn't logout properly would it be a jumble of both usernames? and does this apply to all session variable? thanks.

[182x]

Hi sorry to bump this up but I am still a little confused about session variables and was just wondering if the question above would result in a jumble of usernames? Thanks.