生成XML，字符转义

$doc1=new DOMDocument("1.0","utf-8");
$doc1->formatOutput=true;
$document=$doc1->createElement("document");
$document=$doc1->appendChild($document);
$webname=$doc1->createElement("webname");
$webname=$document->appendChild($webname);
$webname->appendChild($doc1->createTextNode(xmlencode('<![CDATA[ test ]]>')));
生成的xml是<document>
<webname>&lt;![CDATA[ test ]]&gt;</webname>
我不想把<>这个转义，应该怎么处理一下,各们帮帮忙吧