php 怎么把表单数据写入到XML文件中

php 如何把表单数据写入到XML文件中？
php 如何把表单数据写入到XML文件中？

求教了，最好给段代码看看!

[解决办法]

PHP code

require('config.php');$doc = new DOMDocument('1.0', "gb2312");$root = $doc->createElement('URL');$root = $doc->appendChild($root);$sql = "select * from cdb_forums";$result = mysql_query($sql);while($row = mysql_fetch_array($result)){  $imgnode = createNode($root, "Image_Information");  createNode($imgnode, "img_link", $row['fid']);  createNode($imgnode, "big_image", $row['type']);  createNode($imgnode, "thumb_image", $row['status']);}$doc->save("./update.xml");function createNode(&$pNode, $nodeName, $nodeValue='', $nodeAttribute = array()){  global $doc;  $node = $doc->createElement($nodeName);  if($nodeValue != "")  {  $nodeText = $doc->createTextNode($nodeValue);  $node->appendChild($nodeText);  }  if(sizeof($nodeAttribute) > 1)  {  foreach($nodeAttribute as $key=>$value)  {  $node->setAttribute($key, $value);  }  }  $pNode->appendChild($node);  return $node;}