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>Stellungnahme：</span><div>Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn</div></div></div><div class="nphpSytBox"><span>Vorheriger Artikel：<a class="dBlack" title="PHP类继承，有关构造函数" href="https://m.php.cn/de/faq/260807.html">PHP类继承，有关构造函数</a></span><span>Nächster Artikel：<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/de/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>In Verbindung stehende Artikel</h2><em><a href="https://m.php.cn/de/article.html" class="bBlack"><i>Mehr sehen</i><b></b></a></em><div class="clear"></div></div><ins class="adsbygoogle"
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