News Feed
Jobs Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

PHPImpact Blog:
Geo Proximity Search with PHP, Python and SQL
February 09, 2009 @ 10:28:29

On the PHP::Impact blog, Federico takes a look at finding geo-proximity to a find a location on a map and plot it and find the distance to another point - all with the help of PHP, Python and SQL.

Basically, what I'm doing is plotting a radius around a point on a map, which is defined by the distance between two points on the map given their latitudes and longitudes. To achieve this I'm using the Haversine formula (spherical trigonometry). This equation is important in navigation, it gives great-circle distances between two points on a sphere from their longitudes and latitudes.

Included in the post is the code for three different implementations - PHP, Python and SQL, all using that same formula.

0 comments voice your opinion now!
geoproximity search python sql haversine radius latitude longitude


blog comments powered by Disqus

Similar Posts

PHPit.net: Taking a first look at the AutoCRUD for PHP library

Professioanl PHP Blog: Building a culture of objects in PHP

Acunetix.com: Web Site Security Center

FliquidStudios.com: Introduction to using Google's search API

PHP-GTK Community Site: Locating PHP-GTK developers


Community Events











Don't see your event here?
Let us know!


unittest example package framework hhvm composer component introduction release language security install application facebook performance podcast project hack database symfony2

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework