PHP计算2点经纬度之间的距离代码

复制代码代码如下:
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" => 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 />";
}

The example returns the following:

miles: 2.6025
feet: 13,741.4350
yards: 4,580.4783
kilometers: 4.1884
meters: 4,188.3894