> Has anyone had experience in the implementation of some kind of post
> code or zip code lookup function.


> I have seen this on a lot of sites and have no idea where to start such
> a task.

we started by buying a license for the data from the post office which cost
a load of money.
then we wrote a function to find distances using pythagoras' therom
then we wrote function to fit it in with our site

I can't give you code examples, as I'd probably get sacked, but that's where
to start. It isn't very hard anyway.

Alastair Battrick
Senior Developer
Lightwood Consultancy Ltd

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