Thanks for tha quick response and for the offer.
I was indeed unaware that this module is experimental. Anyway, as I implement the authentication myself anyway, and would have needed the module just so that php fills some variable correctly, i found a workaround.
In case anybody needs it:
For beeing able to implement HTTP Digest Authentication in PHP you can use the Rewrite-Engine to assign the HTTP-Auth-String to an enviroment-variable as follows:
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]
</IfModule>
Thanks again geoff and regards,
meldibo