Zip code radius search

[JoeAtRevolutionUnltd]

I want to be able to search for items within a certain radius of the entered zip code. Users will be able to enter a zip code, select the radius, and results within that radius will be returned. I will be using a mysql database. Any recommendations?

Joe
Web Developer

http://www.cmdsonline.com

 

[jpadie]

doesn't google local do something like that?

 

[Kozusnik]

Yes, google has an API you can use. I believe it's free as long as you don't query it over 15k times per day.

Download the google API and apply for a key.

Here's some code to get you started.

$map = new GoogleMapAPI('map');
$map->setAPIKey('their_key');

$startll = $map->geoGetCoords('26003');
$endll = $map->geoGetCoords('90210');

$distance = $map->geoGetDistance($startll['lat'],$startll['lon'],$endll['lat'],$endll['lon'],'M');

echo $distance;

or to skip the API once you have the lat and lon, here's how to calculate the distance yourself.

$distance = 3963.0 * acos(sin($lat1/57.2958) * sin($lat2/57.2958) + cos($lat1/57.2958) * cos($lat2/57.2958) *  cos($lon2/57.2958 - $lon1/57.2958));

echo $distance;

Have fun!

Mark