Description:
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I have a script that runs fine on all versions of PHP until I test with the latest 6.0.0 snapshot.  I am using URL sessions rather than cookie based sessions

On the first page I start the session with session_start(); and set some variables with $_SESSION['varname'] = 'value';

I check the session temp directory and the session is there

---
folder|S:5:"INBOX";
---

The page directs to the next page and can confirm that the session id in the URL is the same as that in the session temp directory.

However on both a print_r($_SESSION); and a var_dump($_SESSION); I get Array ( )  being outputted to the screen.

The data is still in the session temp file i.e. it hasn't been deleted, just the next script seems unable to read the data out of the file from one page to the next.

As I say this script works on PHP 4, 5, 5.1 and 5.2 just not on 6.0snapshot.

Reproduce code:
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1st page

ini_set ( "session.use_cookies", 0);
session_start();
$_SESSION['folder'] = 'INBOX';

2nd page

ini_set ( "session.use_cookies", 0);
session_start();
var_dump($_SESSION);

Expected result:
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To get a variable dump of the $_SESSION array with folder -> INBOX in it

Actual result:
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Array(0) { }