Client side php

I know its probably not the right forum, but I don't know any better :/ Feel free to direct me to the right forum if you can. Sooo, right on to the real question:

At our company we have an online webshop with php, with a postgres backend. It works, it's nice and such. BUT, my boss had a brilliant idea: we need an offline client too. And it would be soooo nice if we could make use of the existing php code :

Basically what I want to know: it is possible to run the php code on the client pc, in an offline mode, just for browsing our catalogue. I presume it would require a "webserver" with php and a database engine of some sort. Anyone ever heard of such a solution?

Personnally I think its an absurd idea, but as I'm primarely a server side java programmer, I know very little about php (and dont even dare to ask me how I got assigned this php porting thingy...)

Any ideas anyone? Is this thing possible?

it's not impossible, but certainly discouraged. and i "think" that still requires a server.

You can always code same simple program that sincronise with web server data and offer offline preview with C# and xml