我直接使用来自 Google 的代码。 https://developers.google.com/maps/articles/phpsqlajax_v3?csw=1
我稍微修改了一下以使用我的数据库。 map 显示在页面上，如果我运行 XML 生成器 - 它会正确显示 XML。
我在这里进行了广泛的搜索，并尝试进行建议的更改 - 但是，我无法让标记显示在 Google map 上？
<?php
$state= "CA";
$country= "US";
require("phpsqlajax_dbinfo.php");
// Opens a connection to a mySQL server
$connection=mysql_connect (localhost, $username, $password);
if (!$connection) {
die('Not connected : ' . mysql_error());
}
// Set the active mySQL database
$db_selected = mysql_select_db($database, $connection);
if (!$db_selected) {
die ('Can\'t use db : ' . mysql_error());
}
$sql1 = "SELECT avg(lat), avg(lng) FROM marker WHERE country='$country' && state='$state'";
$res1 = mysql_query($sql1);
$row1 = mysql_fetch_array($res1);
$alat = $row1[0];
$alng = $row1[1];
?>
<!DOCTYPE html >
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>PHP/MySQL & Google Maps Example</title>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js"></script>
<script type="text/javascript">
//<![CDATA[
var customIcons = {
free: {
icon: '/images/blue.png'
},
paid: {
icon: '/images/red.png'
}
};
function load() {
var map = new google.maps.Map(document.getElementById("map"), {
center: new google.maps.LatLng(<? echo $alat; ?>, <? echo $alng; ?>),
zoom: 6,
mapTypeId: 'roadmap'
});
var infoWindow = new google.maps.InfoWindow();
// Change this depending on the name of your PHP file
downloadUrl("phpsqlajax_genxml.php", function(data) {
var xml = data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var name = markers[i].getAttribute("name");
var address = markers[i].getAttribute("address");
var type = markers[i].getAttribute("type");
var point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
var html = "<b>" + name + "</b> <br/>" + address;
var icon = eval('customIcons'+'.'+type) || {};
var marker = new google.maps.Marker({
map: map,
position: point,
icon: icon.icon
});
bindInfoWindow(marker, map, infoWindow, html);
}
});
}
function bindInfoWindow(marker, map, infoWindow, html) {
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
}
function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function doNothing() {}
//]]>
</script>
</head>
<body onload="load()">
<div align="center">
<div id="map" style="width: 1024px; height: 600px"></div>
</div>
</body>
</html>
用于生成 XML 的文件:
<?php
require("phpsqlajax_dbinfo.php");
// Start XML file, create parent node
$dom = new DOMDocument("1.0");
$node = $dom->createElement("markers");
$parnode = $dom->appendChild($node);
// Opens a connection to a MySQL server
$connection=mysql_connect ('localhost', $username, $password);
if (!$connection) { die('Not connected : ' . mysql_error());}
// Set the active MySQL database
$db_selected = mysql_select_db($database, $connection);
if (!$db_selected) {
die ('Can\'t use db : ' . mysql_error());
}
// Select all the rows in the markers table
$query = "SELECT * FROM marker WHERE country='$country' && state='$state'";
$result = mysql_query($query);
if (!$result) {
die('Invalid query: ' . mysql_error());
}
header("Content-type: text/xml");
// Iterate through the rows, adding XML nodes for each
while ($row = @mysql_fetch_assoc($result)){
// ADD TO XML DOCUMENT NODE
$node = $dom->createElement("marker");
$newnode = $parnode->appendChild($node);
$newnode->setAttribute("name",$row['name']);
$newnode->setAttribute("address", $row['address']);
$newnode->setAttribute("lat", $row['lat']);
$newnode->setAttribute("lng", $row['lng']);
$newnode->setAttribute("type", $row['type']);
}
echo $dom->saveXML();
?>
我确实看到了一个解释，但我不明白它的意思。 “文件必须托管在 Web 服务器上，而不是文件系统上。”
我正在尝试在网站上运行它；这些文件不存储在我的计算机上，而是存储在服务器上。
任何额外的帮助将不胜感激。
最佳答案
将您的脚本替换为
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?v=3&sensor=false"></script>
关于php - 谷歌地图不显示标记，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24816091/