Josh Holat joshholat
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/ gist:6980569
Last active Dec 25, 2015
Calculating Distance Between Two Latitude and Longitude Points
View gist:6980569
| <?php | |
| function distance($lat1, $lon1, $lat2, $lon2, $unit) | |
| { | |
| $theta = $lon1 - $lon2; | |
| $dist = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) + cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta)); | |
| $dist = acos($dist); | |
| $dist = rad2deg($dist); | |
| $miles = $dist * 60 * 1.1515; | |
| $unit = strtoupper($unit); |