Witam, wlasnie po latach przerwy w programowaniu zaczalem pisac apke na komorke i musze zamienic koordynaty GPS wgs84 na metry, ktos z was zna przelicznik?

Nie wiem co to ma wspólnego z PHP i MySQL ale znalazłem coś takiego:
http://gis.stackexchange.com/questions/865...itude/8674#8674

dzieki tego szukalem, ale mam jeszcze

Haversine
formula: a = sin²(Δφ/2) + cos φ1 ⋅ cos φ2 ⋅ sin²(Δλ/2)
c = 2 ⋅ atan2( √a, √(1−a) )
d = R ⋅ c
oblicza mi metry

umial by ktos to napisac w php?

Kolega ma chyba problem z szukaniem.
https://rosettacode.org/wiki/Haversine_formula#PHP

[PHP] pobierz, plaintext 
class POI {
    private $latitude;
    private $longitude;
    public function __construct($latitude, $longitude) {
        $this->latitude = deg2rad($latitude);
        $this->longitude = deg2rad($longitude);
    }
    public function getLatitude() return $this->latitude;
    public function getLongitude() return $this->longitude;
    public function getDistanceInMetersTo(POI $other) {
        $radiusOfEarth = 6371000;// Earth's radius in meters.
        $diffLatitude = $other->getLatitude() - $this->latitude;
        $diffLongitude = $other->getLongitude() - $this->longitude;
        $a = sin($diffLatitude / 2) * sin($diffLatitude / 2) +
            cos($this->latitude) * cos($other->getLatitude()) *
            sin($diffLongitude / 2) * sin($diffLongitude / 2);
        $c = 2 * asin(sqrt($a));
        $distance = $radiusOfEarth * $c;
        return $distance;
    }
}
[PHP] pobierz, plaintext 

[PHP] pobierz, plaintext 
$user = new POI($_GET["latitude"], $_GET["longitude"]);
$poi = new POI(19,69276, -98,84350); // Piramide del Sol, Mexico
echo $user->getDistanceInMetersTo($poi);
[PHP] pobierz, plaintext