RD coordinates to WGS84 (latitude longitude)conversion function Rijks driehoek coördinaten naar WGS84 (latitude longitude) conversie
Usage:
include("rd2wgs84.php");
$latlon = rd2wgs84(113029.751, 400211.209);
echo $latlon['latitude']; // Prints latitude (51.589243073896)
echo $latlon['longitude']; // Prints longitude (4.7815707523717)