[horde] changing cache files directory

[Francesc Guasch]

Hi, I am using Horde and Imp H5 (6.0.2). Actually there
are many cache_* files in /tmp. I'd like horde to create
those files elsewhere.

I tried looking cgi/php.ini and cli/php.ini. I found
session.save_path = "/var/tmp/horde"

That works for session files, but not for the cache ones.

I also found in horde/config/conf.php :

$conf['cache']['driver'] = 'File';

But I can't see where to tell it to store the files in
other directory. I tried this but I had no luck:

$conf['cache']['directory'] = '/var/tmp/horde_cache';

Any hints ? thank you.