用PHP 5.0 轻松解析XML文档（3）

文件:SimpleDocumentRoot.php

＜?php
/**
 *=========================================================
 *
 * @author     hahawen(大龄青年)  
 * @since      2004-12-04
 * @copyright  Copyright (c) 2004, NxCoder Group
 *
 *=========================================================
 */
/**
 * class SimpleDocumentRoot
 * xml root class, include values/attributes/subnodes.
 * all this pachage's is work for xml file, and method is action as DOM.
 *
 * @package SmartWeb.common.xml
 * @version 1.0
 */
class SimpleDocumentRoot extends SimpleDocumentBase
{
 private $prefixStr = '＜?xml version="1.0" encoding="utf-8" ?＞';
 private $nodeLists = array();
 function __construct($nodeTag)
 {
        parent::__construct($nodeTag);
 }
    public function createNodeObject($pNodeId, $name, $attributes)
    {
     $seq = sizeof($this-＞nodeLists);
     $tmpObject = new SimpleDocumentNode($this, $pNodeId, $name, $seq);
     $tmpObject-＞setAttributes($attributes);
     $this-＞nodeLists[$seq] = $tmpObject;
     return $tmpObject;
    }
    public function removeNodeById($id)
    {
        if(sizeof($this-＞nodeLists)==1)
            $this-＞nodeLists = array();
     else
      unset($this-＞nodeLists[$id]);
    }
    public function getNodeById($id)
    {
     return $this-＞nodeLists[$id];
    }
    public function createNode($name, $attributes)
    {
        return $this-＞createNodeByName($this, $name, $attributes, -1);
    }
    public function removeNode($name)
    {
        return $this-＞removeNodeByName($this, $name);
    }
    public function getNode($name=null)
    {
        return $this-＞getNodeByName($this, $name);
    }
    public function getSaveXml()
    {
     $prefixSpace = "";
     $str = $this-＞prefixStr."\r\n";
     return $str.parent::getSaveXml(0);
    }
}
?＞
      

　　
　　文件:SimpleDocumentNode.php

＜?php
/**
 *=========================================================
 *
 * @author     hahawen(大龄青年)  
 * @since      2004-12-04
 * @copyright  Copyright (c) 2004, NxCoder Group
 *
 *=========================================================
 */
/**
 * class SimpleDocumentNode
 * xml Node class, include values/attributes/subnodes.
 * all this pachage's is work for xml file, and method is action as DOM.
 *
 * @package SmartWeb.common.xml
 * @version 1.0
 */
class SimpleDocumentNode extends SimpleDocumentBase
{
 private $seq = null;
 private $rootObject = null;
    private $pNodeId = null;
    function __construct($rootObject, $pNodeId, $nodeTag, $seq)
    {
     parent::__construct($nodeTag);
        $this-＞rootObject = $rootObject;
        $this-＞pNodeId = $pNodeId;
        $this-＞seq = $seq;
    }
    public function getPNodeObject()
    {
     return ($this-＞pNodeId==-1)? $this-＞rootObject: $this-＞rootObject-＞getNodeById($this-＞pNodeId);
    }
    public function getSeq(){
     return $this-＞seq;
    }
    public function createNode($name, $attributes)
    {
        return $this-＞createNodeByName($this-＞rootObject, $name, $attributes, $this-＞getSeq());
    }
    public function removeNode($name)
    {
        return $this-＞removeNodeByName($this-＞rootObject, $name);
    }
    public function getNode($name=null)
    {
        return $this-＞getNodeByName($this-＞rootObject, $name);
    }
}
?＞