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  • Calculate distance between two Locations

    August 13, 2013

    The function below use the latitude and longitude of two locations, and calculate the distance between them in both miles and metric units.

    View Code PHP
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    <!--?php 
function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2) {
    $theta = $longitude1 - $longitude2;
    $miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta)));
    $miles = acos($miles);
    $miles = rad2deg($miles);
    $miles = $miles * 60 * 1.1515;
    $feet = $miles * 5280;
    $yards = $feet / 3;
    $kilometers = $miles * 1.609344;
    $meters = $kilometers * 1000;
    return compact('miles','feet','yards','kilometers','meters'); 
}
 
$point1 = array('lat' =--> 18.933333, 'long' =&gt; 74.583333); // Mumbai
$point2 = array('lat' =&gt; 28.666667, 'long' =&gt; 77.233333); // Delhi
 
$distance = getDistanceBetweenPointsNew($point1['lat'], $point1['long'], $point2['lat'], $point2['long']);
foreach ($distance as $unit =&gt; $value) {
    echo $unit.': '.number_format($value,4).'
';
}
 
?&gt;
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