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<?php
namespace App\Service\v3\Implementations;
use App\Service\v3\Interfaces\LocationServiceInterface;
use App\Model\v3\Area;
use App\Model\v3\Market;
class LocationService implements LocationServiceInterface
{
public function do()
{
// TODO: Implement do() method.
}
public function check()
{
// TODO: Implement check() method.
}
public function undo()
{
// TODO: Implement undo() method.
}
public function getMarketListByLocation($cityIds)
{
$res = Area::query()->with('markets')->whereIn('id',$cityIds)->get();
foreach ($res as &$v){
foreach ($v->markets as &$m)
{
$m->Distance = $this->getDistance($m->lng,$m->lat,108.370333,22.813527);
}
}
return $res;
}
function getDistance($lng1, $lat1, $lng2, $lat2, $unit = 2, $decimal = 2)
{
$EARTH_RADIUS = 6370.996; // 地球半径系数
$PI = 3.1415926535898;
$radLat1 = $lat1 * $PI / 180.0;
$radLat2 = $lat2 * $PI / 180.0;
$radLng1 = $lng1 * $PI / 180.0;
$radLng2 = $lng2 * $PI / 180.0;
$a = $radLat1 - $radLat2;
$b = $radLng1 - $radLng2;
$distance = 2 * asin(sqrt(pow(sin($a / 2), 2) + cos($radLat1) * cos($radLat2) * pow(sin($b / 2), 2)));
$distance = $distance * $EARTH_RADIUS * 1000;
if ($unit === 2) {
$distance /= 1000;
}
return round($distance, $decimal);
}
}