private function CreatePolygonFromGeomText($geomText)
{
$geometryFactory = new MgGeometryFactory();
$vertices = explode(',', $geomText);
$count = $vertices[0];
$coords = new MgCoordinateCollection();
for ($i = 0; $i < $count; $i++)
{
$coord = $geometryFactory->CreateCoordinateXY((double) $vertices[($i * 2) + 1], (double) $vertices[($i * 2) + 2]);
$coords->Add($coord);
}
//Some provider such as SQL Server Spatial, ODBC requires the polygon's start point must be the same as end point.
if(($count>2) && (($coords->GetItem(0)->GetX() != $coords->GetItem($count-1)->GetX()) || ($coords->GetItem(0)->GetY() != $coords->GetItem($count-1)->GetY())))
{
$coord = $geometryFactory->CreateCoordinateXY($coords->GetItem(0)->GetX(), $coords->GetItem(0)->GetY());
$coords->Add($coord);
}
$linearRing = $geometryFactory->CreateLinearRing($coords);
$polygon = $geometryFactory->CreatePolygon($linearRing, null);
return $polygon;
}
