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php - 如何在 Google map 上添加信息窗口和标记

转载 作者:行者123 更新时间:2023-11-29 19:15:56 24 4
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在 WordPress 和 Google Map API 上使用 PHP 和 MYSQL,以便从 MYSQL 数据库检索数据并在 Google map 上显示带有信息窗口的标记。

问题是我无法在 infoWindow 内将从数据库检索到的数据显示为 siteID,其中它是所选表中的字段。

使用以下代码标记不会显示在 map 上

代码:

 <?php
/*
Template Name: MAP2
*/

get_header();
?>


<!DOCTYPE html>
<html>
<head>
<title>Custom Markers</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCquey2tCZ32jLJJDEEi2D7_RnXXyj9RTI&callback=initMap">
</script>
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 600px;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>

</head>
<body>
<div id="map"></div>

<script>

var map,currentPopup;
function initMap() {
map = new google.maps.Map(document.getElementById('map'), {
zoom: 8,
center: new google.maps.LatLng(33.888630, 35.495480),
mapTypeId: 'roadmap'
});

var iconBase = 'https://maps.google.com/mapfiles/kml/shapes/';
var icons = {
parking: {
icon: iconBase + 'parking_lot_maps.png'
},
library: {
icon: iconBase + 'library_maps.png'
},
info: {
icon: iconBase + 'info-i_maps.png'
}
};




function addMarker(feature) {
var marker = new google.maps.Marker({
position: feature.position,

//icon: icons[feature.type].icon,
map: map
});

var popup = new google.maps.InfoWindow({
// content: feature.position.toString(),
// this line that makes the error
content: feature.info,
maxWidth: 300
});

google.maps.event.addListener(marker, "click", function() {
if (currentPopup != null) {
currentPopup.close();
currentPopup = null;
}
popup.open(map, marker);
currentPopup = popup;
});
google.maps.event.addListener(popup, "closeclick", function() {
map.panTo(center);
currentPopup = null;
});
}



var features = [
<?php
global $wpdb;
$prependStr ="";
foreach( $wpdb->get_results("SELECT siteID, latitude, longitude FROM site_coordinates2", OBJECT) as $key => $row) {
$latitude = $row->latitude;
$longitude = $row->longitude;
$info = $row->siteID;
echo $prependStr;
?>
{
position: new google.maps.LatLng(<?php echo $latitude; ?>, <?php echo $longitude; ?>),
info:(<?php echo $info;?>),

}
<?php
$prependStr =",";
}
?>
];



for (var i = 0, feature; feature = features[i]; i++) {

addMarker(feature);
}
}



</script>


</body>
</html>

<?php
get_footer();
?>

最佳答案

用单引号替换信息参数的圆括号。谢谢。

关于php - 如何在 Google map 上添加信息窗口和标记,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42718455/

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