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Creating KML with DOM

2008-08-09 12:04:14 by Martynas Jusevičius

$doc = new DOMDocument("1.0", "UTF-8");
$kmlElem = $doc->createElementNS("http://earth.google.com/kml/2.2", "kml");
$doc->appendChild($kmlElem);
$documentElem = $doc->createElement("Document");
$kmlElem->appendChild($documentElem);

$places = PlacePeer::doSelect(new Criteria()); // retrieve placemark objects, e.g. from Propel model

foreach ($places as $place)
{
	$placemarkElem = $doc->createElement("Placemark");
	$documentElem->appendChild($placemarkElem);

	$nameElem = $doc->createElement("name");
	$placemarkElem->appendChild($nameElem);
	$nameElem->appendChild($doc->createTextNode($place->getName()));

	$descElem = $doc->createElement("description");
	$placemarkElem->appendChild($descElem);
	$descElem->appendChild($doc->createTextNode($place->getDescription()));

	$pointElem = $doc->createElement("Point");
	$coordElem = $doc->createElement("coordinates");
	
	$coordElem->appendChild($doc->createTextNode($place->getLng().",".$place->getLat().",0"));
	$pointElem->appendChild($coordElem);
	$placemarkElem->appendChild($pointElem);
}

$response->write($doc->saveXML()); // use the KML string, e.g. write it out to response

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Comments (50)

Basically, we just made a KMLDocument extends DOMDocument, and added a whole lot of easy utility methods - we didn't need to use the entirety of KML.

The existing libraries around the place were a bit underloved and a bit too verbose.

Now we can just do:

$kml = KMLDocument::instantiate();
$kml->appendChild($kml->aCircle($lat, $long, $radius_in_metres));
$kml->appendChild($kml->aPlacemark($lat, $long, "My House", "This is where I live", "http://foo.com/icon.gif"));

print $kml->saveXML();

It's a timesaver!

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You have good tutorial, but i'm still understand about it, will learn more again. Thanks

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I am confuse what this code for? All peoples said it was a nice article.
may i need another source to learn about this piece of code?

@brokenjava
Me too.. :lol:

Vegy nioce info...but difficult to understand

You have good information...

I got error at line PlacePeer::doSelect(), may i know from where i can get PlacePeer class ?

Finally I found another source here, thanks for the info..

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