[转] PHP计算两个坐标之间的距离, Calculate the Distance Between Two Points in PHP

最新推荐文章于 2025-08-16 20:00:00 发布

转载最新推荐文章于 2025-08-16 20:00:00 发布 · 140 阅读

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原文链接：http://www.cnblogs.com/imbin/p/4218339.html

文章标签：

#php

本文提供了一个PHP函数，用于计算两个坐标点之间的距离，并展示了如何利用此函数找到纽约市内两点之间的距离。

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Calculate the Distance Between Two Points in PHP

There are a lot of applications where it is useful to know the distance between two coordinates. Here, you'll find a PHP function that takes the latitude and longitude of two points and returns the distance between them in both miles and metric units.

You can also use this to find the distance between two addresses by taking advantage of the Google Geotargetting API.

Here's the function:

function get_distance_between_points($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'); 
}

调用
And here's an example of the function in action, using two coordinates in New York City:

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