怎樣的addChild兩個「文件夾」，一個是點，另一個是多邊形

Question

$kml = new SimpleXMLElement('<kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:kml="http://www.opengis.net/kml/2.2" xmlns:atom="http://www.w3.org/2005/Atom"></kml>'); 

$kml->addChild('Document'); 
$kml->Document->addChild('Folder'); 
$kml->Document->addChild('Folder'); 
$kml->Document->addChild('Folder'); 
$kml->Document->Folder->addChild('name','a'); 
$kml->Document->Folder->addChild('name','b'); 
$kml->Document->Folder->addChild('name','c'); 

我想用PHP從XML 做出KML，但只顯示在谷歌地球文件夾中。我需要在一個Web文件夾，以顯示三個文件夾 像：

↓口聚（網絡文件夾）

↓口a (folder) 
    →point1 
    →point2 
↓口b (folder) 
    →polygon1 
    →polygon2 
↓口c (folder) 
    →polyline1 
    →polyline2 

Answer 1

$kml->Document->addChild('Folder'); 
$kml->Document->Folder->addChild('name','a'); 
$kml->Document->addChild('Folder'); 
$kml->Document->Folder[1]->addChild('name','b'); 
$kml->Document->addChild('Folder'); 
$kml->Document->Folder[2]->addChild('name','c'); 

它`工作

THX大家