$_SESSION variables not transferring from page to page

Question

Hi,

If I write the following code:

session_start();
$_SESSION['user_id']='daniel';

the variable stays fine as long as I'm on the page on which it was created, and the second I try to call $_SESSION['user_id'] from another page, I don't get a response. Can anyone tell me what mistake I'm making?

Answer 1

You should be using session_start() on every page you want to use sessions on. Are you?

Answer 2

As long as:

• You are doing session_start() on the other page. Note: you don't make this call once. You do it on every page that wants to access the session information;
• The other page can see your cookie from this site (ie sufficiently similar domain); and
• The other page is running on the same server.

then it can see it. Construct a simple test case and verify this and then work out why what you're doing is different.

Answer 3

You must have session_start() on every page

Answer 4

Ensure that the PHPSESSID cookie is actually being set, and that no headers / content have been sent before you call session_start()