Re: geographic search engine

symbulos partners wrote: >> So often php-general is graced with the presence of people with >> multiple personalities.. or are you really the borg? :) > > What?? You used "we" a lot in your post. >>> Any body has any experience with anything similar? >> >> I coded a zip code to distance calculater last week. >> >> x = 69.1 * ( zip2.lat - zip1.lat ) >> y = 69.1 * ( zip2.lon - zip1.lon ) * cos( zip1.lat / 57.3 ) >> miles = sqrt( x^2 + y^2 ) >> >> This does not take into account the curve of the earth. In addition >> you'll need a db with the latitude and longitude for each zip code. > > Does it work for UK postcodes? Where do you find UK post codes to latitude > databases? For KMS instead of miles, change 69.1 to, err, some other magic number. Do the math. :-) I don't know of any free UK databases. Yet. :-) -- Like Music? http://l-i-e.com/artists.htm