這是一個不錯的示例，直接貼代碼，首先要知道緯度值、經(jīng)度值
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
/** * @desc 根據(jù)兩點間的經(jīng)緯度計算距離 * @param float $lat 緯度值 * @param float $lng 經(jīng)度值 */function getDistance($lat1, $lng1, $lat2, $lng2) { $earthRadius = 6367000; //approximate radius of earth in meters /* Convert these degrees to radians to work with the formula */$lat1 = ($lat1 * pi() ) / 180; $lng1 = ($lng1 * pi() ) / 180; $lat2 = ($lat2 * pi() ) / 180; $lng2 = ($lng2 * pi() ) / 180; /* Using the Haversine formula http://en.wikipedia.org/wiki/Haversine_formula calculate the distance */$calcLongitude = $lng2 - $lng1; $calcLatitude = $lat2 - $lat1; $stepOne = pow(sin($calcLatitude / 2), 2) + cos($lat1) * cos($lat2) * pow(sin($calcLongitude / 2), 2); $stepTwo = 2 * asin(min(1, sqrt($stepOne))); $calculatedDistance = $earthRadius * $stepTwo; return round($calculatedDistance); } |
