我将以下代码存储在“genxml.php”中，该代码在谷歌地图上生成标记。该文件是从另一个文件“mobileInterface.php”调用的。如果我在数据库中添加另一个标记位置，在计算机浏览器上一切正常，我唯一的问题是从移动浏览器加载时，标记不会立即更新，我必须退出浏览器并再次加载以更新. 否则我必须直接从 URL 加载“genxml.php”，下载内容然后再次加载“mobileInterface.php”。
我试过不缓存页面内容，但我仍然有这个问题。请问有什么想法吗？
//genxml.php
$query = "SELECT * ,DATE_FORMAT( ts, '%d-%m-%Y : %H.%i.%s' ) as tz FROM dataentry WHERE caseStatus = 1";
$result = mysql_query($query);
if (!$result) {
die('Invalid query: ' . mysql_error());
}
header("Content-type: text/xml");
// Start XML file, echo parent node
echo '<markers>';
// Iterate through the rows, printing XML nodes for each
while ($row = @mysql_fetch_assoc($result)){
// ADD TO XML DOCUMENT NODE
echo '<marker ';
echo 'id="' . parseToXML($row['id']) . '" ';
echo 'riskCategory="' . parseToXML($row['riskCategory']) . '" ';
echo 'EventAccidentSubject="' . parseToXML($row['EventAccidentSubject']) . '" ';
echo 'description="' . parseToXML($row['description']) . '" ';
echo 'peopleInvolved="' . parseToXML($row['peopleInvolved']) . '" ';
echo 'hazards="' . parseToXML($row['hazards']) . '" ';
echo 'address="' . parseToXML($row['address']) . '" ';
echo 'lat="' . $row['lat'] . '" ';
echo 'lng="' . $row['lng'] . '" ';
echo 'caseStatus="' . parseToXML($row['caseStatus']) . '" ';
echo 'ts="' . $row['tz'] . '" ';
echo '/>';
}
// End XML file
echo '</markers>';
?>
//mobileInterface.php
var mobileInterfaceServer = "http://10.0.0.21/genxml.php";
downloadUrl(mobileInterfaceServer, function(markers) {//replace markers with data
var xml = markers.responseXML;//replace markers with data
var markers = xml.documentElement.getElementsByTagName("marker");
selectBox = document.getElementById('destination');
for (var i = 0; i < markers.length; i++) {
var riskCategory = markers[i].getAttribute("riskCategory");
var EventAccidentSubject = markers[i].getAttribute("EventAccidentSubject");
var address = markers[i].getAttribute("address");
var point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
html = "<b>" + EventAccidentSubject + "</b> <br/>" + address;
displayLocation(markers[i]);
//displayLocation(point);
addOption(selectBox, markers[i].getAttribute("EventAccidentSubject"), point);
bindInfoWindow(marker, map, infoWindow, html);
}