我在WordPress上使用PHP和MYSQL与Google Map API，我从MYSQL数据库中检索数据，并根据从数据库中检索到的坐标在Google Map上显示标记。
问题是网页上是否显示了注释，有人能告诉我代码中的错误在哪里？
<?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">
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* 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;
function initMap() {
map = new google.maps.Map(document.getElementById('map'), {
zoom: 16,
center: new google.maps.LatLng(-33.91722, 151.23064),
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 features =
{
<?php
global $wpdb;
$prependStr ="";
foreach( $wpdb->get_results("SELECT * FROM site_coordinates2") as $key => $row)
{
$latitude = $row->latitude;
$longitude = $row->longitude;
$info = $row->siteID;
echo $prependStr;
?>
{
position: new google.maps.LatLng(<?php echo $latitude ?>, <?php echo $latitude ?>),
type: '<?php echo $info;?>'
}
<?php
$prependStr =",";
}
?>
}
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=***************callback=initMap">
</script>
</body>
</html>
<?php
get_footer();
?>