KML - Google Map Circle Generator Script in PHP
- GMap
- PHP
KML Google Maps
Here's a simple example to generate a KML circle by the meter at a specific center of point (lat, long) on Google maps by using a simple PHP code.
- $lat = '37.029869';
- $long = '-76.345222';
- $meter = 1000;
- // Get circle coordinates
- $coordinatesList = getCirclecoordinates($lat, $long, $meter);
- // Output
- $kml .= " \n";
- $kml .= " \n";
- $kml .= " \n";
- $kml .= " ".$coordinatesList."\n";
- $kml .= " \n";
- $kml .= " \n";
- $kml .= " \n";
- function getCirclecoordinates($lat, $long, $meter) {
- // convert coordinates to radians
- $lat1 = deg2rad($lat);
- $long1 = deg2rad($long);
- $d_rad = $meter/6378137;
- $coordinatesList = "";
- // loop through the array and write path linestrings
- for($i=0; $i<=360; $i+=3) {
- $radial = deg2rad($i);
- $lat_rad = asin(sin($lat1)*cos($d_rad) + cos($lat1)*sin($d_rad)*cos($radial));
- $dlon_rad = atan2(sin($radial)*sin($d_rad)*cos($lat1), cos($d_rad)-sin($lat1)*sin($lat_rad));
- $lon_rad = fmod(($long1+$dlon_rad + M_PI), 2*M_PI) - M_PI;
- $coordinatesList .= rad2deg($lon_rad).",".rad2deg($lat_rad).",0 ";
- }
- return $coordinatesList;
- }
Hope this blog helps you to generate a KML file in Google Maps through PHP code.