I wrote this small PHP class a while ago for a project that never really came about. The purpose is to use GPS coordinates to find the surface distance. I did some research and am pretty sure the formula is correct. Before using it in any mission-critical apps, I suggest verifying the formula. Use it, steal it, whatever, just let me know if you use it in something cool!

As always, I am open to any suggestions that might make it better!


Share and Enjoy:
  • Digg
  • del.icio.us
  • Facebook
  • Google Bookmarks
  • MySpace
  • Netvibes
  • Reddit
  • Slashdot
  • StumbleUpon
  • Twitter
  • Yahoo! Buzz