Posted by Mitul on 09/28/48 11:41

Hello friend,

I hope that following function will helpful to your. This function will
use to calculate circular distance

function Calculate_distance($lat1, $lon1, $lat2, $lon2) {
$theta = $lon1 - $lon2."<br>";
$dist = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) +
cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta));
$dist = acos($dist);
$dist = rad2deg($dist);

return $miles = round($dist * 60 * 1.1515);

}

With Regards,
Mitul Patel
mitul [at] siliconinfo [dot] com

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