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两个经纬度之间的距离

来源:互联网 收集:自由互联 发布时间:2021-06-28
四个参数 function getDistance($lat1, $lng1, $lat2, $lng2) { $earthRadius = 6367000; $lat1 = ($lat1 * pi() ) / 180; $lng1 = ($lng1 * pi() ) / 180; $lat2 = ($lat2 * pi() ) / 180; $lng2 = ($lng2 * pi() ) / 180; $calcLongitude = $lng2 - $ln
四个参数
function getDistance($lat1, $lng1, $lat2, $lng2) {
     $earthRadius = 6367000; 

     $lat1 = ($lat1 * pi() ) / 180;
     $lng1 = ($lng1 * pi() ) / 180;

     $lat2 = ($lat2 * pi() ) / 180;
     $lng2 = ($lng2 * pi() ) / 180;

     $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);
 }

 echo getDistances(31.2014966,121.40233369999998,31.22323799999999,121.44552099999998);//单位是:m(米)
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