把分类数据转化成可读的XML文件方便调用

<?php
 error_reporting(E_ALL ^ E_NOTICE);
 header("Content-type:text/xml"); print("<?xml version="1.0"encoding="gb2312"?>"); 
include("../include/mysql.class.php");
$id=(isset($_GET[id]))?$_GET[id]:0;
 print("<tree id=&#39;".$id."&#39;>");
 show_item(&#39;table_name&#39;,0); //table_name是你的分类表名
print("</tree>");

 function show_item($database,$pid)
{
 $db = new mysql();
 $query="select * from $database where parent=&#39;$pid&#39;";
$result=$db->query($query);
while($r=$db->fetch_array($result))
{
 print("<item id=&#39;".$r[id]."&#39; text=&#39;".$r[category]."&#39;><userdata name=&#39;rank&#39;>".$r[rank]."</userdata><userdata name=&#39;category&#39;>".$r[category]."</userdata>");
 if($r[rank]!=&#39;3&#39;)show_item($database,$r[id]); //0:第一级,3:第四级,依此类推
print("</item>");
}
$db->close();
}
?>