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Bug #37908 putenv() variables not reset at the end of the script
Submitted: 2006-06-25 12:56 UTC Modified: 2006-07-28 01:00 UTC
From: php at raj dot homelinux dot com Assigned:
Status: No Feedback Package: Apache2 related
PHP Version: 4.4.2 OS: Linux 2.6
Private report: No CVE-ID: None
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 [2006-06-25 12:56 UTC] php at raj dot homelinux dot com 
Description:
------------
putenv() claims that the env variables are reset to their original values when the script exits.  HOwever, this doesn't seem to be happening - as a result, if the env var TZ is set from a php script, it affects apache2 logs, changing the timestamp for all subsequent gets served by the process that ran this php script which set TZ.  


Reproduce code:
---------------
 set $timezone different from server timezone and run:

 putenv("TZ=".$timeZone);

--
then do a few more gets and check the apache logs, you will see something like:


xx.xx.xx.xx - - [19/Jun/2006:23:05:18 -0400] "GET ..."
xx.xx.xx.xx - - [19/Jun/2006:23:05:18 -0400] "GET ..."
xx.xx.xx.xx - - [20/Jun/2006:13:05:11 +1000] "GET ..."

(see how the timestamp in the apache log flipped from -0400 to +1000.. thats the problem)

Expected result:
----------------
Timestamps should remain consistent

Actual result:
--------------
Timestamps are not consistent (see example above)

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 [2006-06-25 13:36 UTC] tony2001@php.net 
What kind of MPM are you using?
 [2006-06-25 14:16 UTC] php at raj dot homelinux dot com 
MPM?

Here's what I'm using (wbel3)
kernel-2.4.21-40.EL
php-4.3.2-30.ent
httpd-2.0.46-56.ent.WB1

and the program in question is squirrelmail 
squirrelmail-1.4.6-5.el3
(in include/validate.php)

I submitted a bug report to squirrelmail, from where i got pointed to the putenv() documentation and the fact that putenv() isn't working as expected.  See user comments on the putenv() page as well.
 [2006-06-25 14:36 UTC] tony2001@php.net 
Is it apache2-prefork or apache2-worker?
`httpd -V` usually helps.
 [2006-06-25 20:06 UTC] php at raj dot homelinux dot com 
this is the 'stock' apache server from RedHat / WBEL

# httpd -V
Server version: Apache/2.0.46
Server built:   Mar 14 2006 20:20:20
Server's Module Magic Number: 20020903:4
Architecture:   32-bit
Server compiled with....
 -D APACHE_MPM_DIR="server/mpm/prefork"
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses disabled)
 -D APR_USE_SYSVSEM_SERIALIZE
 -D APR_USE_PTHREAD_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D HTTPD_ROOT="/etc/httpd"
 -D SUEXEC_BIN="/usr/sbin/suexec"
 -D DEFAULT_PIDLOG="logs/httpd.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_LOCKFILE="logs/accept.lock"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="conf/mime.types"
 -D SERVER_CONFIG_FILE="conf/httpd.conf"
 [2006-07-20 15:57 UTC] tony2001@php.net 
Please try using this CVS snapshot:

  http://snaps.php.net/php4-STABLE-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php4-win32-STABLE-latest.zip
 [2006-07-28 01:00 UTC] php-bugs at lists dot php dot net 
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 
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