Re: [PHP] Sorting users geographically...
Hi Tony, I would think the first step would be to find a web service or dataset to convert a zip code to longitude/latitude. The formula for calculating distances from long/lat is available here: http://www.colorado.edu/geography/gcraft/warmup/aquifer/html/distance.html Cheers, David Grant Tony Di Croce wrote: I'm helping a friend of mine build a matchmaking website, and we have a doozy of a problem to solve: What I need to do is two fold: #1 Collect whatever geographical information I need from each user to enable #2 #2 Be able to run query's to find people NEAR (geographically) another person. Does anyone know of any commercial or free implementations of this? Is it primarily a database problem or is their some way (computationally) to compute the probable proximity of two zip codes? Hopefully someone responds to this with a Pear package that does exactly what I need! :) If that can't happen, then I'd appreciate any options you can think of. td -- Free Linux Technical Articles http://www.linuxtecharticles.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Sorting users geographically...
I'm helping a friend of mine build a matchmaking website, and we have a doozy of a problem to solve: What I need to do is two fold: #1 Collect whatever geographical information I need from each user to enable #2 #2 Be able to run query's to find people NEAR (geographically) another person. Does anyone know of any commercial or free implementations of this? Is it primarily a database problem or is their some way (computationally) to compute the probable proximity of two zip codes? Hopefully someone responds to this with a Pear package that does exactly what I need! :) If that can't happen, then I'd appreciate any options you can think of. http://sniptools.com/latitudeLongitude.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Sorting users geographically...
Does anyone know of any commercial or free implementations of this? Is it primarily a database problem or is their some way (computationally) to compute the probable proximity of two zip codes? There is a class called zipLocator. I think I found it at phpclasses.org. It uses a large zipcode database, which can be downloaded for free (the address is in the class). This will return all zipcodes within a specified distance from the target zipcode (10 mi, 50 mi, etc.). If you can't find it, contact me offline. Regards, SK WebDesigns Internet Consulting E-commerce Solutions Application Development Sandy Keathley Zend Certified Engineer [EMAIL PROTECTED] 972-569-8464 http://www.KeathleyWebs.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Sorting users geographically...
On 21 Nov 2005, at 14:14, Tony Di Croce wrote: Does anyone know of any commercial or free implementations of this? Is it primarily a database problem or is their some way (computationally) to compute the probable proximity of two zip codes? All the suggested packages could be all you need, but also note that MySQL 5 has built-in GIS features which may make searches like these way more efficient should they use them: http://dev.mysql.com/doc/refman/5.0/en/spatial-extensions-in-mysql.html http://dev.mysql.com/doc/refman/5.0/en/functions-that-test-spatial- relationships-between-geometries.html Marcus -- Marcus Bointon Synchromedia Limited: Putting you in the picture [EMAIL PROTECTED] | http://www.synchromedia.co.uk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
