使用PHP 5.0 轻松解析XML文档（3）

＜?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);    }}?＞      

＜?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);    }}?＞