/*$dom = new DomDocument('1.0','gb2312');
$object = $dom->createElement('object');
$dom->appendChild($object);
$book = $dom->createElement('book');
$object->appendChild($book);
$computerbook = $dom->createElement('computerbook');
$book->appendChild($computerbook);
$type = $dom->createAttribute('type');
$computerbook->appendChild($type);
$type_value = $dom->createTextNode('computer');
$type->appendChild($type_value);
$bookname = $dom->createElement('bookname');
$computerbook->appendChild($bookname);
$bookname_value = $dom->createTextNode(iconv('gb2312','utf-8','PHP'));
$bookname->appendChild($bookname_value);
echo $dom->saveXML();
*/