A PHP library for geographic calculations:
- Calculate the distance between two coordinate points on the earth’s surface (using Vincenty, Haversine, Great Circle or The Cosine Law)
- Conversion between units (metres to kilometres, nautical miles and miles).
- Convert coordinate notation (decimals to degrees, minutes & seconds and back again).
This is an improved (PHP5.3.2+) and tested version of Geographic Calculations in PHP.