Bug #15983 Updated: session variables lost between pages

From: Date: Mon, 18 Mar 2002 16:16:42 +0000
Subject: Bug #15983 Updated: session variables lost between pages
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-2774@lists.php.net to get a copy of this message 
 ID:               15983
 Updated by:       phpbug@ehrlichorg.com
 Reported By:      sl@scrooge.dk
 Status:           Open
 Bug Type:         Session related
 Operating System: Debian/Linux mips platform
 PHP Version:      4.1.2
 New Comment:

Here is part of what is going wrong. PHP starts out with each session
variable appearing as a global and also in $_SESSION. Initially these
are linked by reference (not clear how) and contain the same data. On
my pages this linkage appears to get broken so the contents
$GLOBALS['S'] and $_SESSION['S'] are not the same. $GLOBALS contains
the latest data, $_SESSION contains the data as of the start of the
page. Consequently changes to the $_SESSION variable are not being
saved between pages.

My work around is to use the following at the end of each page for $S:

	if ( !($_SESSION['S'] === $S) )
		$_SESSION['S'] = $S;

This updates the contents of the $_SESSION variable if it is not longer
the same as the global.

Based on a comment from one of the developers, the problem may relate
to having a global declaration for a session variable that appears
outside a function scope. I have these declarations on each of my pages
because PHP used to require them.


Previous Comments:
------------------------------------------------------------------------

[2002-03-12 20:52:42] php@bradandkristin.com

I've had the same issue (see bug 15822, which was marked as a
duplicate, though nobody saw fit to tell me what it was a duplicate
of).

Anyone have a work-around?

------------------------------------------------------------------------

[2002-03-10 09:14:31] sl@scrooge.dk

The session variables are lost between pages.

For example:
session1.php:
<?
session_start();
$test = "Hello world";
session_register(test);
?>

session2.php:
<?
session_start();
echo $test;
?>

The output on page two is the empty string.

A look at the sess_* in /tmp show that it contain the variable and the
value after a request on session1.php.

After a request on session2.php the file is empty.

This error shows up in php 4.1.1 and 4.1.2.

In version 4.0.6 everything works as it is suppose to.

uname --all:
Linux indy01 2.4.16 #1 Sun Dec 16 16:38:44 CET 2001 mips unknown

gcc --version:
2.95.4

------------------------------------------------------------------------


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