I don't think this is possible. First of all, you can't run a web server on the iPad. Most browsers have a "save page" option that saves a page's html and all stylesheets and images with it so you could do that for each individual page in the site (but note that you'd be looking at "static" versions of those -- forms wouldn't work for example).
But I don't know if there's a way to view these saved web files on an iPad (could try searching the app store for something along the lines of "offline website viewer" though).

Another option is serving your local site through to a publicly-accessible address with one of these services:
http://showoff.io/
http://pagekite.net/

If the iPad is jailbroken you can run an apache webserver, not sure if php would run though, but im with Jordan,

yeah you can get some php stuff working for jailbroken ipods/iphones/ipads, but I've never gotten mysql to work.

OK this ipad business seems a bit limiting.

So if I save my pages down through my browser then the ipad user can't view these pages in safari without some sort of "offline web viewer".

This is a bit slack isn't it?

Nige

jailbreak and you can do more- but this is apple you know.

You could grab a static copy of the entire site by using

http://www.httrack.com/

and saving it to a USB flash drive.

There are versions that run on Win/*nix/OSX, but you don't need the software to view the content.

The clients could then view it on any computer over there with a decent browser. Personally I like to have a much larger viewing area doing that sort of thing.

then theres this

http://itunes.apple.com/us/app/isaveweb-website-download/id30559453...

and this

http://itunes.apple.com/au/app/offline-pages-offline-web/id36485964...

which I think will probably do the trick...