如何找到兩組座標之間的距離在PHP

Question

假設我有兩組座標，我從地圖源通過android應用程序獲得這些座標並將其發送到服務器，現在服務器端將計算它們之間的距離和打印。

Answer 1

嘗試這個

<?php 

$points = array 
(
    "point1" => "0,55" , 
    "point2" => "0,52" 
); 

function get_distance($inputs) 
{ 
    $count = 1; 
    foreach($inputs as $x => $y) 
    { 
     echo $x." = (".$y.")<br>"; 
     $p[$count] = explode(",",$y); 
     $count++; 
    } 

    $x1 = $p[1][0]; 
    $y1 = $p[1][1]; 

    $x2 = $p[2][0]; 
    $y2 = $p[2][1]; 

    $distance = sqrt(pow(($x2 - $x1) , 2) + pow(($y2 - $y1) , 2)); 
    echo $distance; 
} 

get_distance($points); 

?> 

Answer 2

試試這個：

function calculateDistance($lat1, $lon1, $lat2, $lon2, $unit) { 

    $theta = $lon1 - $lon2; 
    $dist = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) + cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta)); 
    $dist = acos($dist); 
    $dist = rad2deg($dist); 
    $miles = $dist * 60 * 1.1515; 
    $unit = strtoupper($unit); 

    if ($unit == "K") { 
     return ($miles * 1.609344); 
    } else if ($unit == "N") { 
     return ($miles * 0.8684); 
    } else { 
     return $miles; 
    } 
} 

，你可以這樣調用它：

calculateDistance($latitude1, $longitude1, $latitude2, $longitude2, "K"); 

Reference