根据两点的经纬度计算两点之间的距离PHP脚本

需要能够计算出两点之间的距离吗？下面的函数使用两个位置的纬度和经度，计算它们之间的距离（英里和公制单位）。

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');   }

使用示例：

$point1 = array('lat' => 40.770623, 'long' => -73.964367);  $point2 = array('lat' => 40.758224, 'long' => -73.917404);  $distance = getDistanceBetweenPointsNew($point1['lat'], $point1['long'], $point2['lat'], $point2['long']);  foreach ($distance as $unit => $value) {      echo $unit.': '.number_format($value,4).'<br />';  }