在使用
关于用到的XML文件还以“Php Xml处理之simplexml使用方法浅谈”一文中的XML为例，文件名为：me.xml。代码如下：
PHP XML处理XML代码
然后就需要用PHP DOMDocument去处理这个文件，将XML文件中的任何元素都解析出来。代码如下，里面有注释。
PHP DOMDocument解析XML文件的代码
<ol class="dp-xml">
<li class="alt"><span><span class="tag"><span> ?php </span></span></span></li>
<li><span>// 首先要建一个DOMDocument对象 </span></li>
<li class="alt">
<span>$</span><span class="attribute">xml</span><span> = </span><span class="attribute-value">new</span><span> DOMDocument(); </span>
</li>
<li><span> </span></li>
<li class="alt"><span>// 加载Xml文件 </span></li>
<li>
<span>$xml-</span><span class="tag">></span><span>load("me.xml"); </span>
</li>
<li class="alt"><span> </span></li>
<li><span>// 获取所有的post标签 </span></li>
<li class="alt">
<span>$</span><span class="attribute">postDom</span><span> = $xml-</span><span class="tag">><br></span><span>getElementsByTagName("post"); </span>
</li>
<li><span> </span></li>
<li class="alt"><span>// 循环遍历post标签 </span></li>
<li><span>foreach($postDom as $post){ </span></li>
<li class="alt"><span>// 获取Title标签Node </span></li>
<li>
<span>$</span><span class="attribute">title</span><span> = $post-</span><span class="tag">><br></span><span>getElementsByTagName("title"); </span>
</li>
<li class="alt"><span> </span></li>
<li><span>/** </span></li>
<li class="alt"><span>* 要获取Title标签的Id属性要分两部走 </span></li>
<li>
<span>* 1. 获取title中所有属性的<br>列表也就是$title-</span><span class="tag">></span><span>item(0)-</span><span class="tag">></span><span>attributes </span>
</li>
<li class="alt"><span>* 2. 获取title中id的属性，<br>因为其在第一位所以用item(0) </span></li>
<li><span>* </span></li>
<li class="alt"><span>* 小提示： </span></li>
<li>
<span>* 若取属性的值可以用item(*)-</span><span class="tag">></span><span>nodeValue </span>
</li>
<li class="alt">
<span>* 若取属性的标签可以用item(*)-</span><span class="tag">></span><span>nodeName </span>
</li>
<li>
<span>* 若取属性的类型可以用item(*)-</span><span class="tag">></span><span>nodeType </span>
</li>
<li class="alt"><span>*/ </span></li>
<li>
<span>echo "Id: " . $title-</span><span class="tag">></span><span>item(0)-</span><span class="tag">><br></span><span>attributes-</span><span class="tag">></span><span>item(0)-</span><span class="tag">></span><span>nodeValue . "</span><span class="tag"><span> </span><span class="tag-name">br</span><span> </span><span class="tag">/></span><span>"; </span></span>
</li>
<li class="alt">
<span>echo "Title: " . $title-</span><span class="tag">><br></span><span>item(0)-</span><span class="tag">></span><span>nodeValue . "</span><span class="tag"><span> </span><span class="tag-name">br</span><span> </span><span class="tag">/></span><span>"; </span></span>
</li>
<li>
<span>echo "Details: " . $post-</span><span class="tag">><br></span><span>getElementsByTagName("details")-</span><span class="tag">></span><span>i<br>tem(0)-</span><span class="tag">></span><span>nodeValue . "</span><span class="tag"><span> </span><span class="tag-name">br</span><span> </span><span class="tag">/></span><span class="tag"><span> </span><span class="tag-name">br</span><span> </span><span class="tag">/></span><span>"; </span></span></span>
</li>
<li class="alt"><span>} </span></li>
<li>
<span class="tag">?></span><span> </span>
</li>
</ol>这只是一种方法，PHP DOMDocument相当强大，还有更多的解析方法与策略，等待您去发掘。
