RE: [PHP-DB] Post code / zip code look up ?
| From: | Alastair Battrick | Date: | Thu, 07 Mar 2002 14:57:37 +0000 |
| Subject: | RE: [PHP-DB] Post code / zip code look up ? | ||
| References: | 1 | Groups: | php.db |
| Request: | Send a blank email to php-db+get-17539@lists.php.net to get a copy of this message | ||
> Has anyone had experience in the implementation of some kind of post
> code or zip code lookup function.
yes
> 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
http://www.lightwood.net