php xml的问题

xml代码如下：
<Section SectionID="3">
  <SectionReadmeTxt>啊啊啊啊啊</SectionReadmeTxt>
  <SectionScore>0</SectionScore>
  <GroupSum>0</GroupSum>
  <QuestionSum>0</QuestionSum>
  <Question>
  <QuestionID>1</QuestionID>
</Section>
<Section SectionID="2">
  <SectionReadmeTxt>啊啊啊啊啊</SectionReadmeTxt>
  <SectionScore>0</SectionScore>
  <GroupSum>0</GroupSum>
  <QuestionSum>0</QuestionSum>
  <Question>
  <QuestionID>1</QuestionID>
</Section>
<Section SectionID="13">
  <SectionReadmeTxt>啊啊啊啊啊</SectionReadmeTxt>
  <SectionScore>0</SectionScore>
  <GroupSum>0</GroupSum>
  <QuestionSum>0</QuestionSum>
  <Question>
  <QuestionID>1</QuestionID>
</Section>

php代码如下
<?php
header("Content-type: text/html; charset=utf-8");
$xml = new DOMDocument();
$xml->load('aaa.epp');

$id = $xml->getElementsByTagName('Section');
foreach ($id as $id){
$names =$id->getElementsByTagName("SectionID");;
$name3 = $names->item(0)->nodeValue;
echo "name3：".$name3."<br/><br/>";
}
?>
上面的php代码不对，请问如何使用php dom 将<Section SectionID="3">中的SectionID的值取出来，请各位帮帮忙，谢谢了

自己顶一下，没人吗

你的 XML 也有错误.修正后应该是:

aaa.epp
------------
XML code

<Sections>
<Section SectionID="3">
  <SectionReadmeTxt>啊啊啊啊啊</SectionReadmeTxt>
  <SectionScore>0</SectionScore>
  <GroupSum>0</GroupSum>
  <QuestionSum>0</QuestionSum>
  <Question/>
  <QuestionID>1</QuestionID>
</Section>
<Section SectionID="2">
  <SectionReadmeTxt>啊啊啊啊啊</SectionReadmeTxt>
  <SectionScore>0</SectionScore>
  <GroupSum>0</GroupSum>
  <QuestionSum>0</QuestionSum>
  <Question/>
  <QuestionID>1</QuestionID>
</Section>
<Section SectionID="13">
  <SectionReadmeTxt>啊啊啊啊啊</SectionReadmeTxt>
  <SectionScore>0</SectionScore>
  <GroupSum>0</GroupSum>
  <QuestionSum>0</QuestionSum>
  <Question/>
  <QuestionID>1</QuestionID>
</Section>
</Sections>

aaa.php
------------
[code=PHP]<?php
header("Content-type: text/html; charset=utf-8");
$xml = new DOMDocument();
$xml->load('aaa.epp');

$sections = $xml->getElementsByTagName('Section');
foreach ($sections as $section){
  $id =$section->getAttribute("SectionID");;
  echo "id：".$id."<br/><br/>";
}
?>[/code>