ubuntu 10.04 - Apache/PHP configuration setting the wrong permissions on PHP generated files

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I have an Ubuntu server
running a LAMP stack, and set up the permissions on /var/www
such that all developers in our organisation are members of the www-data group, and the
directory permissions are 2775 (rwxrwsr-x), file permissions
should all be 664 - I've also set the default umask in
/etc/profile to be
0002.

This all works great, except that any file
created by PHP on the server only has permissions 644
(rw-r--r--)...

I'm
trying to find something in PHP or Apache configuration (probably PHP) that sets new
files to be 664 by default - is there such a
beast?

Update:

I
found the following information at href="http://ubuntuforums.org/showthread.php?t=549457" rel="nofollow
noreferrer">http://ubuntuforums.org/showthread.php?t=549457

Adding
the line:

umask
            0002

to
/etc/apache2/envvars and restarting the server should
work.

I restarted, without error, but it doesn't
seem to have changed a thing. My PHP-generated files are still not group
writeable.

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class="normal">Answer

Have you tried using rel="nofollow noreferrer">PHP's umask() function? It's very possible that
PHP enforces a set of file permissions of its own...