Need a site for how to redirect if session is empty

Question

I have a session that i have created as soon as someone
logins. I need some
help on how to redirect the person if they try to access a
page without the
session.
i have 5 pages... based on your login you entered, i am
keeping that name in
the session... on each page i have a stored procedure that is
executed on
submit to verify that name against the table to add the recid
into the new
table..
I want to make sure that on page load if that session is
empty then redirect
to main page to login and continue

Answer 1

thanks for the reply... cant tell you if it works, im working
on ASP that
was my fault for not stating it...
Building the app in ASP, SQL2005 using DW8
"geschenk" <[email protected]> wrote in
message
news:f0tasq$oho$[email protected]..
> You´ll probably just need to paste the following
snippet *at the very
> beginning*
(line 1) of the respective page:
>
> <?php
> if(!isset($_SESSION['username'])) { // if session
variable "username"
> doesn´t
> exist or has expired...
> header('Location: login.php'); // ...redirect to the
login page
> }
> ?>
>
> I *think* this should work
>