sessions restricting access

[ronaldo9]

i have php 4.3.0,

im developing a login system using sessions, i have a page called personal.php which should only be accessed by a user when they have logged into the system. I want to stop someone accessing this page directly without loggin, i tried this

if(!isset($username) || !isset($password){
//redirect user to login page
}

im not using an else part,

when i try to access this page directly i get a php.exe error and Windows closes the application...

all i want to do is stop direct access to a page,,

any thoughts?

[anthill]

try this:

session_start();
if(!session_is_registered("username"))
{
 header("Location: login.php");
}

hope this helps

Ant