已知经纬度、精度、（速度和方向），欲将信息展示在地图上，可以用如下代码：
<html>
<head>
<title>Location-Map</title>
<script
src="<?php
//GET值为a:latitude,n:longitude,r:accuracy,h:heading,s:speed
//判断是否含有速度方向信息，来选择加载geometry库
if(isset($_GET['s'])&&isset($_GET['h'])&&$_GET["s"]!=0){
echo 'http://maps.googleapis.com/maps/api/js?libraries=geometry&key=yourMapApiKey&sensor=false';
} else {
echo 'http://maps.googleapis.com/maps/api/js?key=yourMapApiKey&sensor=false';
}?>">
</script>
<script>
var myCenter=new google.maps.LatLng(<?php echo $_GET["a"].",".$_GET["n"]; ?>);
function initialize()
{
var mapProp = {
center: myCenter,
zoom:16,
mapTypeId: google.maps.MapTypeId.<?php echo $_GET["t"]; ?>
};
var map = new google.maps.Map(document.getElementById("googleMap"),mapProp);
var marker=new google.maps.Marker({
position:myCenter,
});
var myCity = new google.maps.Circle({
center:myCenter,
radius:<?php echo $_GET["r"]; ?>,
strokeColor:"#0000FF",
strokeOpacity:0.5,
strokeWeight:1,
fillColor:"#0000FF",
fillOpacity:0.2
});
<?php
if(isset($_GET['s'])&&isset($_GET['h'])&&$_GET["s"]!=0){
$s=$_GET['s']*10;
$h=$_GET['h']+180;
//使用geometry库来计算起始点
echo 'var startLL=new google.maps.geometry.spherical.computeOffset(myCenter, '.$s.', '.$h.');';
echo 'var myTrip=[startLL,myCenter];';
echo 'var flightPath=new google.maps.Polyline({
path:myTrip,
strokeColor:"#0000FF",
strokeOpacity:0.8,
strokeWeight:2
});';
echo 'flightPath.setMap(map);';
}
?>
marker.setMap(map);
myCity.setMap(map);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="googleMap" style="width:400px;height:300px;"></div>
<br>
</body>
</html>本文更新於 2014/05/19。