PHP计算两点经纬度之间的距离代码

以下是对PHP计算2点经纬度之间的距离代码进行了分析介绍

1. function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2) {
2. $theta = $longitude1 - $longitude2;
3. $miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta)));
4. $miles = acos($miles);
5. $miles = rad2deg($miles);
6. $miles = $miles * 60 * 1.1515;
7. $feet = $miles * 5280;
8. $yards = $feet / 3;
9. $kilometers = $miles * 1.609344;
10. $meters = $kilometers * 1000;
11. return compact('miles','feet','yards','kilometers','meters');
12. }
14. $point1 = array('lat' => 40.770623, 'long' => -73.964367);
15. $point2 = array('lat' => 40.758224, 'long' => -73.917404);
16. $distance = getDistanceBetweenPointsNew($point1['lat'], $point1['long'], $point2['lat'], $point2['long']);
17. foreach ($distance as $unit => $value) {
18. echo $unit.': '.number_format($value,4).'
    ';
19. }
20. ?>

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PHP