Problems with PHP-Sessions?

Hi,

I have tried to set up suPHP (0.7.1 self compiled) on a development-server (CentOS, Apache 2.2.3, PHP
5.3.3) using mod_userdir to force apache/php to run php-files in user_dirs
(/home/user/home/public_html) with the same user/rights as its owner. 

My problem: All php-Apps that create sessions get in conflict because all the php-instances (runing as
different users) seem to generate the SAME session-ids which leads into identical session-file-names
in /var/lib/php/sessions/. The first php-app (or php-instance) successfully creates its
session-file, but all following apps (instances) end up with errors like ...

Warning: session_start(): open(/var/lib/php/session/sess_XXXXXX, O_RDWR) failed: Permission
denied (13) in /home/xxx/home/public_html/index.php on line X
Warning: Unknown: open(/var/lib/php/session/sess_XXXXXX, O_RDWR) failed: Permission denied (13) in
Unknown on line 0 
Warning: Unknown: Failed to write session data (files). Please verify that the current setting of
session.save_path is correct (/var/lib/php/session) in Unknown on line 0

Currently I have <Location>-Blocks that configure for each user_dir its own php.ini (with
suPHP_ConfigPath) in which i define different sessions-folders for each app/user. That works but is an
ugly workaround.

How do you fix/prevent/solve that? I was really surprised no one had that issue before. There MUST be a
better way.

Thanks and Greets,
Big D

PS: /home/user/home/public_html is no typo, we have a additional "home"-directory for some other
reasons, /home/user/ is still the $HOME/~ of each user)

And little offtopic: How would force php/apache, running as its own user (apache, www-data, depending on
the OS), to set the rights of newly created files always to 775 instead of 755 (which seems default)? 
--

-- 
NEU: FreePhone 3-fach-Flat mit kostenlosem Smartphone!                                  
Jetzt informieren: http://mobile.1und1.de/?ac=OM.PW.PW003K20328T7073a