=?gbk?B?u9i4tDogW1pTMl0gW21hcGd1aWRlLXVzZXJzXSBX?= =?gbk?B?aGF0IGhhcHBlbnMgaWYgdGhlIEJCT1ggZG9lcyBu?= =?gbk?B?b3QgZXhpc3Q/?=

[=?gbk?B?vs+x8w==?=]

my codes is from  the http://mapguide.osgeo.org/livegallery.html and I want to do the same thing as http://data.mapguide.com/mapguide/DynamicKml/GoogleEarth.php¡¡£Éjust used their codes and use my data instead,but I can't get the right result.
 If there is no BBOX,can I get the Geometry?
 the file which invoke that function is just as follows.
  
 ------------------
  
                                                         --¾Ï±ó

 <?php
  //This file delivers KML network link content directly
 //to Google Earth.
 include 'UtilityFunctions.php';
  //uses the Wrapper.kml file for KML Network Link Skeleton
 $doc = DOMDocument::load('Wrapper.kml');
 $networkLinkNode = $doc->getElementsByTagName('href')->item(0);
 $networkLinkNode->nodeValue = "http://localhost:8008/mapguide/test/KMLContentFactory.php?FILTER=".urlencode($_GET["PropertyName"]." ".$_GET["Operator"]." ".$_GET["VAL"]);
 
 $layerDefinition = $doc->saveXML();
 header('Content-Type: application/keyhole');
 header('Content-Length: ' . strlen($layerDefinition));
  echo $layerDefinition;
 ?>

  
 ------------------ ԭʼÓʼþ ------------------
  ·¢¼þÈË: "Kenneth Skovhede, GEOGRAF A/S"<ks at geograf.dk>;
 ·¢ËÍʱ¼ä: 2008Äê5ÔÂ28ÈÕ(ÐÇÆÚÈý) ÏÂÎç03:56
 ÊÕ¼þÈË: "MapGuide Users Mail List"<mapguide-users at lists.osgeo.org>; 
 
 Ö÷Ìâ: Re: [ZS2] [mapguide-users] What happens if the BBOX does not exist?

  
 You should provide more surrounding code, or say where the code is from.
In the code below, the envelope is never used, so it doesn't matter if it is there.
I assume it was supposed to be combined with the attribute filter like this:
if ($queryEnvelope != null)
    $queryOptions->SetSpatialFilter($queryEnvelope)

Regards, Kenneth Skovhede, GEOGRAF A/S 

¾Ï±ó skrev:  Why the 'BBOX' does not exist?If this happens,can I get the 'geometry'?
the codes is as following:
if (array_key_exists('BBOX', $_GET))
    {
        // split the client's BBOX return by commas and spaces to obtain an array of coordinates
        $coords = preg_split('/,|\s/', $_GET['BBOX']);
        $lowerLeft = $geometryFactory->CreateCoordinateXY($coords[0], $coords[1]);
        $upperRight = $geometryFactory->CreateCoordinateXY($coords[2], $coords[3]);

        $queryEnvelope = new MgEnvelope($lowerLeft, $upperRight);
    }

$featureService = $siteConnection->CreateService(MgServiceType::FeatureService);
    $queryOptions = new MgFeatureQueryOptions();

    $filter = urldecode($_GET["FILTER"]) ;
    //echo "<p>$filter</p>";
    echo '<Folder>';
    echo '<description>MapGuide - Wheaton Parcels Filtered ['.$filter.'] </description>';
    echo '<name>Wheaton Parcels</name>';
    echo '<visibility>0</visibility>';
    echo '<open>1</open>';

    $queryOptions->SetFilter($filter);
    //Feature Source being used in the application
    $featureReader = $featureService->SelectFeatures(new MgResourceIdentifier("Library://test/Data/province.FeatureSource"), "province", $queryOptions);
    //if($featureReader!=null) echo "<p>feature success!</p>";
    $geometryReaderWriter = new MgAgfReaderWriter();
    echo '<p>test1</p>';
    //Read Feature Source Attributes for populating Tooltip on Google Earth
    //Change this if using a different Feature Source
    $byteReader = $featureReader->GetGeometry('Geometry');
    //if($byteReader) echo '<p>feature success!</p>';
    $geometry = $geometryReaderWriter->Read($byteReader);

  
                                                         



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