How to create a google map with kml layer overlay dynamically

Question

function initialize() {
    var myOptions = {
      center: new google.maps.LatLng(23.71181,90.407467),
      zoom: 8,
      mapTypeId: google.maps.MapTypeId.ROADMAP         


        

Answer 1

Yes, it is possible to generate a new KML file server-side (PHP) and then tell JavaScript to load a new KmlLayer using the URL that will generate the KML content. Note that the KML URL:

• must be publicly accessible, since Google servers need to download it
• will be cached by Google servers, serving a different content at the same URL won't refresh it

To overcome this caching, just add some random clatter to the URL. However, be aware caching is there to make it fast. You can't have both "super-fast KML" and "real-time fresh data" at once. Also, keep an eye on your own server's response times for KML URLs, the faster the better.