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Bug #22642 After saving a session var in a var, nulling the session var clears the 2nd var
Submitted: 2003-03-11 15:54 UTC Modified: 2003-03-12 16:47 UTC
From: dave at orangechicken dot com Assigned:
Status: Not a bug Package: Session related
PHP Version: 4.3.1 OS: Linux / Apache 1.3.27
Private report: No CVE-ID: None
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 [2003-03-11 15:54 UTC] dave at orangechicken dot com 
OK, the summary was too short to concisely enter what I mean. Here's the real version:

After assigning a stored $_SESSION var to another variable, assigning null to the $_SESSION var clears the other variable too.

This worked before 4.3.1 (possibly occurred in 4.3.0 - we skipped from 4.2.7 to 4.3.1).

Here's a snippet where the problem occurs. $_SESSION[ 'login_redirect' ] contains the value 'checkout.php'.

================================
$redirect = $_SESSION[ 'login_redirect' ];
echo $redirect; // outputs checkout.php
$_SESSION[ 'login_redirect' ] = null;
echo $redirect; // outputs <nothing>
================================

Here's the configure string
'./configure' '--with-apxs=/usr/local/apache/bin/apxs' '--with-xml' '--enable-bcmath' '--enable-calendar' '--with-curl' '--enable-ftp' '--with-gd' '--with-jpeg-dir=/usr/local' '--with-png-dir=/usr' '--with-xpm-dir=/usr/X11R6' '--with-imap' '--with-imap-ssl' '--with-kerberos' '--with-mcrypt' '--enable-magic-quotes' '--with-mysql' '--with-pear' '--enable-xslt' '--with-xslt-sablot' '--enable-sockets' '--enable-track-vars' '--with-ttf' '--with-freetype-dir=/usr' '--enable-gd-native-ttf' '--enable-versioning' '--with-zlib'

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 [2003-03-11 21:07 UTC] sniper@php.net 
Please provide a short but complete example script.

And is register_globals=off ?
And what about session.bug_compat_42 and session.bug_compat_warn?

Put 'error_reporting(E_ALL);' as first line in your script,
you propably get some errors..
 [2003-03-12 03:27 UTC] dave at orangechicken dot com 
I'm uber-tarded. I found the solution an hour later or so (and it's the same one suggested above). I used an .htaccess file to turn register_globals off. I had been working in my dev environment so long (with register_globals off in php.ini) that I didn't even think about that when I moved to the live environment (which defaults to on).

My bad. Case closed.
 [2003-03-12 16:47 UTC] sniper@php.net 
Not PHP bug.
 
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