php解析cas返回的xml

    使用php进行cas验证时，对方返回这么一段xml

<cas:serviceResponse xmlns:cas='http://www.yale.edu/tp/cas'>    <cas:authenticationSuccess>        <cas:user>zhangjian</cas:user>        <cas:language></cas:language>    </cas:authenticationSuccess></cas:serviceResponse>

    于是使用php相关函数进行解析

$str = <<authenticationSuccess[0];var_dump($successnode);*/$xml = new DOMDocument();$xml -> loadXML($str);var_dump($xml);

    结果都解析不出来，哪位朋友遇到过请指点下，不甚感激！！！

回复讨论(解决方案)

SimpleXML也是PHP5后提供的一套简单易用的xml工具集，
不过它不适用于包含namespace（命名空间）的xml。

怎么会？

<?php$str = <<<EOT&lt;cas:serviceResponse xmlns:cas='http://www.yale.edu/tp/cas'&gt;    &lt;cas:authenticationSuccess&gt;        &lt;cas:user&gt;zhangjian&lt;/cas:user&gt;        &lt;cas:language&gt;&lt;/cas:language&gt;    &lt;/cas:authenticationSuccess&gt;&lt;/cas:serviceResponse&gt;EOT;  $validateXML = simplexml_load_string($str, null, 0, 'cas', true);print_r($validateXML);$successnode = $validateXML->authenticationSuccess[0];print_r($successnode); $xml = new DOMDocument();$xml -> loadXML($str);print_r($xml);</pre>  <pre class="sycode" name="code">SimpleXMLElement Object(    [authenticationSuccess] =&gt; SimpleXMLElement Object        (            [user] =&gt; zhangjian            [language] =&gt; SimpleXMLElement Object                (                )        ))SimpleXMLElement Object(    [user] =&gt; zhangjian    [language] =&gt; SimpleXMLElement Object        (        ))DOMDocument Object(    [doctype] =&gt;     [implementation] =&gt; (object value omitted)    [documentElement] =&gt; (object value omitted)    [actualEncoding] =&gt;     [encoding] =&gt;     [xmlEncoding] =&gt;     [standalone] =&gt; 1    [xmlStandalone] =&gt; 1    [version] =&gt; 1.0    [xmlVersion] =&gt; 1.0    [strictErrorChecking] =&gt; 1    [documentURI] =&gt; file:///D:/AMP/web/    [config] =&gt;     [formatOutput] =&gt;     [validateOnParse] =&gt;     [resolveExternals] =&gt;     [preserveWhiteSpace] =&gt; 1    [recover] =&gt;     [substituteEntities] =&gt;     [nodeName] =&gt; #document    [nodeValue] =&gt;     [nodeType] =&gt; 9    [parentNode] =&gt;     [childNodes] =&gt; (object value omitted)    [firstChild] =&gt; (object value omitted)    [lastChild] =&gt; (object value omitted)    [previousSibling] =&gt;     [attributes] =&gt;     [ownerDocument] =&gt;     [namespaceURI] =&gt;     [prefix] =&gt;     [localName] =&gt;     [baseURI] =&gt; file:///D:/AMP/web/    [textContent] =&gt;             zhangjian            )</pre> </p> <p class="sougouAnswer">  谢谢唠叨大大，刚刚使用一个方法解决了，不过没有大大的好  <br>  <br>  <pre class="sycode" name="code">$str = <<<EOT&lt;cas:serviceResponse xmlns:cas='http://www.yale.edu/tp/cas'&gt;    &lt;cas:authenticationSuccess&gt;        &lt;cas:user&gt;zhangjian&lt;/cas:user&gt;        &lt;cas:language&gt;&lt;/cas:language&gt;    &lt;/cas:authenticationSuccess&gt;&lt;/cas:serviceResponse&gt;EOT;$str = str_replace('cas:', '', $str);$validateXML = simplexml_load_string($str);$successnode = $validateXML->authenticationSuccess[0];echo (string)$successnode->user;</pre> </p></div><div class="nphpQianMsg"><div class="clear"></div></div><div class="nphpQianSheng"><span>Statement：</span><div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn</div></div></div><div class="nphpSytBox"><span>Previous article：<a class="dBlack" title="PHP类继承，有关构造函数" href="https://m.php.cn/faq/260807.html">PHP类继承，有关构造函数</a></span><span>Next article：<a class="dBlack" title="关于浏览器标签显示为文章标题的问题" href="https://m.php.cn/faq/260809.html">关于浏览器标签显示为文章标题的问题</a></span></div><div class="nphpSytBox2"><div class="nphpZbktTitle"><h2>Related articles</h2><em><a href="https://m.php.cn/article.html" class="bBlack"><i>See more</i><b></b></a></em><div class="clear"></div></div><ins class="adsbygoogle"
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