如何知道是标记内多边形在谷歌地图api

当你点击地图1中的任何地方创建新标记并制作多边形它工作得很好，但现在我的问题是，我不能得到我的标记是来自数据库是在多边形内或不是，如何知道它??

<?php include("config.php"); ?>
<?php $result = mysql_query("select * from `googlemaps`"); ?>
<html>
<head>
<title>Google Maps</title>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
  var poly, map;
  var markers = [];
  var path = new google.maps.MVCArray;
  function initialize() {
    var LatLng = new google.maps.LatLng(23.183, 75.767);
    map = new google.maps.Map(document.getElementById("map"), {
      zoom: 12,
      center: LatLng,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

  function createMarker(point, title) {
       var infowindow = new google.maps.InfoWindow({
        content: "<span style='color:blue;'>"+title+"</span>"
    });   
      var marker =  new google.maps.Marker({
          position: point, 
          map: map, 
          title:title
      });
      marker.Image ='https://d3szoh0f46td6t.cloudfront.net/public/1626980/small';
     google.maps.event.addListener(marker, "click", function() { 
     infowindow.open(map,marker);
      });
        return marker;
    }
<?php
        if(mysql_num_rows($result)>0)
        {
          while( $data = mysql_fetch_array($result) )
         { ?>
         createMarker(new google.maps.LatLng(<?php echo $data['lat']; ?>, <?php echo $data['lon']; ?>),  "<?php echo $data['title']; ?>");
    <?php } 
         }
?>  
    poly = new google.maps.Polygon({
      strokeWeight: 3,
      fillColor: '#5555FF'
    });
    poly.setMap(map);
    poly.setPaths(new google.maps.MVCArray([path]));
    google.maps.event.addListener(map, 'click', addPoint);
  }
  function addPoint(event) {
    path.insertAt(path.length, event.latLng);
    var marker = new google.maps.Marker({
      position: event.latLng,
      map: map,
      draggable: true
    });
    markers.push(marker);
    marker.setTitle("#" + path.length);
    google.maps.event.addListener(marker, 'click', function() {
      marker.setMap(null);
      for (var i = 0, I = markers.length; i < I && markers[i] != marker; ++i);
      markers.splice(i, 1);
      path.removeAt(i);
      }
    );
    google.maps.event.addListener(marker, 'dragend', function() {
      for (var i = 0, I = markers.length; i < I && markers[i] != marker; ++i);
      path.setAt(i, marker.getPosition());
      document.getElementById("abc").innerHTML=path.setAt(i, marker.getPosition());
      }
    );
  }
</script>
</head>
<body style="margin:0px; padding:0px;" onLoad="initialize()">
  <div id="map" style="width:500px; height:500px;"></div>
    <div id="abc"></div>
</body>
</html>

您可能会问如何检查此javascript或php。我不知道在这些地区有GIS框架。

大多数空间数据库(如我工作过的SQL Server/Postgresql)提供了你可以使用的ST_Contains或ST_Distance等功能。我想这是OpenGIS规范的一部分。

我想你可能正在使用MYSQL。所以可能只需要搜索一个函数。

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