解读PHP DOMDocument在解析XML文件中的作用_PHP教程

<ol class="dp-xml"><li class="alt"><span><span class="tag"><</span><span> ?php   </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><span class="tag-name">br</span><span> </span><span class="tag">/></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><span class="tag-name">br</span><span> </span><span class="tag">/></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><span class="tag-name">br</span><span> </span><span class="tag">/></span><span class="tag"><</span><span> </span><span class="tag-name">br</span><span> </span><span class="tag">/></span><span>";   </span></li><li class="alt"><span>}   </span></li><li><span class="tag">?></span><span>  </span></li></ol>