Dinamic open basedir configuration with apache

[PCnity]

Hello

I have one box for serving about 30 domains + ~10 subdomains on each. The directory structure is:

/hsoting/domain.tld/www, sub1, sub2, _ (symbolic link to www)

With dynamiv_vhosts, i have just one vhost file.

But is it possible to do also something like this:

<DirectoryMatch "^/hosting/{domain}.{tld}/{sub}">
php_admin_value open_basedir "/hosting/{domain}.{tld}/{sub}/:/tmp"
</DirectoryMatch>

???

Now i have for each domain one <directory> with open_basedir set. Is there a way to do it dynamicly?

Thank you very much.