Intergration into a php website

[Shunt9]

Sorry if this has been asked before, but I did try searching first, it's hard to find specific keywords for this.

I want to intergrate coppermine into my website by using php. I've seen solutions where the coppermine theme gets changed so that it mimics the website, but I don't want to do this, because i'd rather have the whole site run off one base page (means less updating/adapting when I want to change things in the future). I tried doing this by buffering the index.php of coppermine into a variable, but this didn't work (coppermine didn't recognize it's include paths anymore since the gallery was installed in /gallery/ and not the base).
If possible, I want to archieve this without editing coppermine's files, so that updating coppermine in the future will be most easy.

So I guess my question basically is, how would I archieve this?

Shunt9

[Nibbler]

You can't. Coppermine cannot work like that.