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Google map shows blank page

I went through numerous tutorials over last few days and I registered my site and got API but I am getting a blank page no matter what tutorial I try. However if I just try first example (very basic one from google) that works fine. Which means my API is good. please find my code below.

Thanks in advance

<html>
<head>
<title>Who locations in London</title>
<script src="http://www.google.com/uds/api?file=uds.js&v=1.0&source=uds-msw&key=MY API KEY"
    type="text/javascript"></script>
</head>
<body>
<p><strong>Who-locations in London</strong></p>
<div id="map" style="width: 800px; height: 600px"></div> 
<script type="text/javascript">
//<![CDATA[
 
var map = new GMap2(document.getElementById("map"));
map.addControl(new GLargeMapControl());
map.addControl(new GMapTypeControl());
map.addControl(new GScaleControl());
map.setCenter(new GLatLng(51.512161, -0.14110), 11, G_NORMAL_MAP);
 
// Creates a marker whose info window displays the given number
function createMarker(point, number)
{
var marker = new GMarker(point);
// Show this markers index in the info window when it is clicked
var html = number;
GEvent.addListener(marker, "click", function() {marker.openInfoWindowHtml(html);});
return marker;
};
 
<?php
$link = mysql_connect("localhost", "user", "pass") or die("Could not connect: " . mysql_error());
mysql_selectdb("[db_googlemap]",$link) or die ("Can\'t use dbmapserver : " . mysql_error());
 
$result = mysql_query("SELECT * FROM markers",$link);
if (!$result)
{
echo "no results ";
}
while($row = mysql_fetch_array($result))
{
echo "var point = new GLatLng(" . $row['lat'] . "," . $row['lon'] . ");\n";
echo "var marker = createMarker(point, '" . addslashes($row['address']) . "');\n";
echo "map.addOverlay(marker);\n";
echo "\n";
}
 
mysql_close($link);
?>
 
//]]>
</script>
 
</body>
</html>

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david-navertech

This is may be a long shot, as I have limited knowledge of the Google Maps API. I had had a similar problem recently which was due to the <body> onload event being missed out.

I noticed your code example doesn't have the Javascript in the <head> section. Never seen it done this way, but you could try the amended code below and see if it makes any difference.

<html>
<head>
<title>Who locations in London</title>
<script src="http://www.google.com/uds/api?file=uds.js&v=1.0&source=uds-msw&key=MY API KEY"
    type="text/javascript"></script>
 
<script type="text/javascript">
//<![CDATA[
     function load() {
      if (GBrowserIsCompatible()) {
 
	var map = new GMap2(document.getElementById("map"));
	map.addControl(new GLargeMapControl());
	map.addControl(new GMapTypeControl());
	map.addControl(new GScaleControl());
	map.setCenter(new GLatLng(51.512161, -0.14110), 11, G_NORMAL_MAP);
 
	// Creates a marker whose info window displays the given number
	function createMarker(point, number)
	{
	var marker = new GMarker(point);
	// Show this markers index in the info window when it is clicked
	var html = number;
	GEvent.addListener(marker, "click", function() {marker.openInfoWindowHtml(html);});
	return marker;
	};
 
	<?php
	$link = mysql_connect("localhost", "user", "pass") or die("Could not connect: " . mysql_error());
	mysql_selectdb("[db_googlemap]",$link) or die ("Can\'t use dbmapserver : " . mysql_error());
 
	$result = mysql_query("SELECT * FROM markers",$link);
	if (!$result)
	{
	echo "no results ";
	}
	while($row = mysql_fetch_array($result))
	{
	echo "var point = new GLatLng(" . $row['lat'] . "," . $row['lon'] . ");\n";
	echo "var marker = createMarker(point, '" . addslashes($row['address']) . "');\n";
	echo "map.addOverlay(marker);\n";
	echo "\n";
	}
 
	mysql_close($link);
	?>
 
       }
     }
 
//]]>
</script>
 
</head>
<body onload="load()" onunload="GUnload()">
<p><strong>Who-locations in London</strong></p>
<div id="map" style="width: 800px; height: 600px"></div>  
</body>
</html>

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syedasimmeesaq

ASKER

Thank you for your response. but it didn't work.

ASKER CERTIFIED SOLUTION

syedasimmeesaq

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syedasimmeesaq

ASKER

why would this not work in query

$result = mysql_query("SELECT * FROM locations where city=London",$link);