Notice: Undefined offset in script

[Davor Ergotic]

Hi all,

need hlp please.
This is the case - function get full URL to Google Maps XML document [with all the parameters of searched address].

This is the code

function getcoordinates($location) {

	$mapaddress = urlencode("$location");


	// Desired address
	$key = MAPS_KEY;
	$url = "http://maps.google.com/maps/geo?q=$mapaddress&output=xml&key=$key";;
	

	// Retrieve the URL contents
	$page = file_get_contents($url);


	// Parse the returned XML file
	$xml = new SimpleXMLElement($page);
		
	// Parse the coordinate string
	list($longitude, $latitude, $altitude) = explode(",", $xml->Point->coordinates);

	print '<pre>'; print_r($xml->Point->coordinates); exit('</pre>'); 

	$geo['lat'] = $latitude;
	$geo['long'] = $longitude;
	$geo['alt'] = $altitude;
	
	return $geo;

}

With this code I get:
Notice: Undefined offset: 2 in ..../functions.php on line 36
Notice: Undefined offset: 1 in ..../functions.php on line 36
Line 36 is:

list($longitude, $latitude, $altitude) = explode(",", $xml->Point->coordinates);

Problem is that I don't get coordinates of searched address.

Please, help.
Thx in advance,
Davor