请问PHP如何读取此类的xml文件

<?php

$str = <<<XML

<?xml version="1.0" encoding="utf-8"?>

 <res>

 <item igid="luoql_happy">

  <info name="pwd" value="111111" /> 

  <info name="sex" value="1" /> 

  <info name="nick" value="" /> 

  <info name="email" value="adsfadf@126.com" /> 

  <info name="truename" value="sdfas" /> 

  <info name="phone" value="1-1" /> 

  <info name="mobile" value="" /> 

  <info name="usermark" value="2" /> 

<member>

<item id="89443">

<![CDATA[ 户主

  ]]> 

  </item>

  </member>

  </item>

  </res>

XML;



print_r(simplexml_load_string(iconv('gb2312','utf-8' ,$str)));