Integration with self-coded php website

[lionking]

Hi all, first time poster and coppermine user here.

I have coppermine here -> domain.com/photos/ but would like to tell from my root domain.com if a user is logged-in or not to my gallery.  If not I would like to display a login-form on domain.com which would log the user in to my gallery.

I remember doing something similar with phpbb - it was reasonably easy - by defining the root path to my phpbb forum frmo my main site and being able to use all the functions on all non-phpbb pages.

Is there a similar way to incorporate a coppermine gallery like this?

Any help would be greatly appreciated