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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+) and tested version of Geographic Calculations in PHP.

For more information and documentation please see the documentation.

Licence

This library is under a permissive BSD 2-Clause License.