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php Programming Glossary: londelta

Measuring the distance between two coordinates in PHP

http://stackoverflow.com/questions/10053358/measuring-the-distance-between-two-coordinates-in-php

lonTo deg2rad longitudeTo latDelta latTo latFrom lonDelta lonTo lonFrom angle 2 asin sqrt pow sin latDelta 2 2 cos latFrom.. sqrt pow sin latDelta 2 2 cos latFrom cos latTo pow sin lonDelta 2 2 return angle earthRadius Edit As TreyA correctly pointed.. latTo deg2rad latitudeTo lonTo deg2rad longitudeTo lonDelta lonTo lonFrom a pow cos latTo sin lonDelta 2 pow cos latFrom..