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<?php
namespace Yandex\Market\Data;
class Coordinates
{
const EARTH_RADIUS = 6371000;
/** @noinspection PowerOperatorCanBeUsedInspection */
public static function distance($latitudeFrom, $longitudeFrom, $latitudeTo, $longitudeTo)
{
$latFrom = deg2rad($latitudeFrom);
$lonFrom = deg2rad($longitudeFrom);
$latTo = deg2rad($latitudeTo);
$lonTo = deg2rad($longitudeTo);
$latDelta = $latTo - $latFrom;
$lonDelta = $lonTo - $lonFrom;
$angle =
2 * asin(sqrt(pow(sin($latDelta / 2), 2)
+ cos($latFrom) * cos($latTo) * pow(sin($lonDelta / 2), 2)));
return $angle * static::EARTH_RADIUS;
}
}