php实现计算百度地图坐标之间距离的方法 百度地图公交查询 百度地图api 百度地图路线查

 $minLat,
    'maxLat' => $maxLat,
    'minLon' => $minLng,
    'maxLon' => $maxLng
  );
  return $range;
}
//获取2点之间的距离
function GetDistance($lat1, $lng1, $lat2, $lng2){
  $radLat1 = $lat1 * (PI / 180);
  $radLat2 = $lat2 * (PI / 180);
  $a = $radLat1 - $radLat2;
  $b = ($lng1 * (PI / 180)) - ($lng2 * (PI / 180));
  $s = 2 * asin(sqrt(pow(sin($a/2),2) + cos($radLat1)*cos($radLat2)*pow(sin($b/2),2)));
  $s = $s * EARTH_RADIUS;
  $s = round($s * 10000) / 10000;
  return $s;
}