function toGeoJSON()
{
$gmlDoc = new SimpleXMLElement($this->doc);
$gmlDoc->registerXPathNamespace('xls', 'http://www.opengis.net/xls');
$gmlDoc->registerXPathNamespace('wfs', 'http://www.opengis.net/wfs');
$gmlDoc->registerXPathNamespace('gml', 'http://www.opengis.net/gml');
// build feature collection
$featureCollection = new FeatureCollection();
// segments of the featzreCollection
$gmlFeatureMembers = $gmlDoc->xpath("//gml:featureMember");
if (count($gmlFeatureMembers) > 0) {
$cnt = 0;
foreach ($gmlFeatureMembers as $gmlFeatureMember) {
$featureMember_dom = dom_import_simplexml($gmlFeatureMember);
$feature = new Feature();
if ($this->geomFeaturetypeElement != null) {
$feature->parse($featureMember_dom, $this->geomFeaturetypeElement);
} else {
$feature->parse($featureMember_dom);
}
if (isset($feature->geometry)) {
$featureCollection->addFeature($feature);
}
$cnt++;
}
return $featureCollection->toGeoJSON();
} else {
return "{}";
}
}
