ZipCode Search

[galofre]

Hello all,

I would like to create a search by zipcode having a 5 mile radio or so. Any suggestions where should I start?

😕

[drawmack]

First you have to buy the zip code database. This includes every zip code in the us and the radians of the centerpoint of that zip code. Then you do a little, okay a lot of, math to go from radians to miles. There are turoials for this on the web just google it.

[galofre]

Can I just use the information (zipcode) that I have Registered inthe database?

As costumer add new listings, the zipcode database increases, If the zipcode if not found a message will display, if found, a list of listing will show.

Can this be done without the ALL zipcode database?

[drawmack]

sure, but are you also storing the radians of the logitude and latitude of the center point of the zip code, you'll need that to do the search.

[ultraslacker]

Look at the postgis package for postgresql - it's open source so you can see the innards.

Project URL: http://freshmeat.net/projects/postgis/