传递参数:
地址1的纬度:$lat1 ,经度:$lng1,
地址2的纬度 $lat2 ,经度:$lng2,
示例:
封装的方法:
/**
* 计算两个经纬度距离
*/
public function getDistance($lat1, $lng1, $lat2, $lng2){
$earthRadius = 6367000; //approximate radius of earth in meters
$lat1 = ($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);
}