使用PHP 5.0 轻松解析XML文档（2）

＜?php/** *========================================================= * * @author     hahawen(大龄青年)   * @since      2004-12-04 * @copyright  copyright (c) 2004, nxcoder group * *========================================================= *//** * class simpledocumentparser * use sax parse xml file, and build simpledocumentobject * all this pachage's is work for xml file, and method is action as dom. * * @package smartweb.common.xml * @version 1.0 */class simpledocumentparser{ private $domrootobject = null; private $currentno = null; private $currentname = null; private $currentvalue = null; private $currentattribute = null; public function getsimpledocument() {     return $this-＞domrootobject; } public function parse($file) {        $xmlparser = xml_parser_create();     xml_parser_set_option($xmlparser,xml_option_case_folding, 0);     xml_parser_set_option($xmlparser,xml_option_skip_white, 1);     xml_parser_set_option($xmlparser, xml_option_target_encoding, 'utf-8');     xml_set_object($xmlparser, $this);     xml_set_element_handler($xmlparser, "startelement", "endelement");     xml_set_character_data_handler($xmlparser, "characterdata");        if (!xml_parse($xmlparser, file_get_contents($file)))            die(sprintf("xml error: %s at line %d", xml_error_string(xml_get_error_code($xmlparser)),
　　　　　　　　xml_get_current_line_number($xmlparser)));     xml_parser_free($xmlparser); } private function startelement($parser, $name, $attrs) {        $this-＞currentname = $name;        $this-＞currentattribute = $attrs;        if($this-＞currentno == null)        {         $this-＞domrootobject = new simpledocumentroot($name);         $this-＞currentno = $this-＞domrootobject;        }        else        {         $this-＞currentno = $this-＞currentno-＞createnode($name, $attrs);        } }    private function endelement($parser, $name)    {        if($this-＞currentname==$name)        {         $tag = $this-＞currentno-＞getseq();         $this-＞currentno = $this-＞currentno-＞getpnodeobject();            if($this-＞currentattribute!=null && sizeof($this-＞currentattribute)＞0)          $this-＞currentno-＞setvalue($name, array('value'=＞$this-＞currentvalue, 
　　　　　　　'attrs'=＞$this-＞currentattribute));         else                $this-＞currentno-＞setvalue($name, $this-＞currentvalue);            $this-＞currentno-＞removenode($tag);        }        else        {      $this-＞currentno = (is_a($this-＞currentno, 'simpledocumentroot'))? null: 
　　　　　　　　$this-＞currentno-＞getpnodeobject();        } } private function characterdata($parser, $data) {        $this-＞currentvalue = iconv('utf-8', 'gb2312', $data); } function __destruct() {     unset($this-＞domrootobject); }}?＞      

＜?php/** *========================================================= * * @author     hahawen(大龄青年)   * @since      2004-12-04 * @copyright  copyright (c) 2004, nxcoder group * *========================================================= *//** * abstract class simpledocumentbase * base class for xml file parse * all this pachage's is work for xml file, and method is action as dom. * * 1/ add/update/remove data of xml file. * 2/ explode data to array. * 3/ rebuild xml file * * @package smartweb.common.xml * @abstract * @version 1.0 */abstract class simpledocumentbase{ private $nodetag = null; private $attributes = array(); private $values = array(); private $nodes = array();    function __construct($nodetag)    {        $this-＞nodetag = $nodetag;    }    public function getnodetag()    {     return $this-＞nodetag;    }    public function setvalues($values){     $this-＞values = $values;    }    public function setvalue($name, $value)    {     $this-＞values[$name] = $value;    }    public function getvalue($name=null)    {     return $name==null? $this-＞values: $this-＞values[$name];    }    public function removevalue($name)    {     unset($this-＞values["$name"]);    }    public function setattributes($attributes){        $this-＞attributes = $attributes;    }    public function setattribute($name, $value)    {     $this-＞attributes[$name] = $value;    }    public function getattribute($name=null)    {        return $name==null? $this-＞attributes: $this-＞attributes[$name];    }    public function removeattribute($name)    {     unset($this-＞attributes["$name"]);    }    public function getnodessize()    {        return sizeof($this-＞nodes);    }    protected function setnode($name, $nodeid)    {     $this-＞nodes[$name] = $nodeid;    }    public abstract function createnode($name, $attributes);    public abstract function removenode($name);    public abstract function getnode($name=null);    protected function getnodeid($name=null)    {     return $name==null? $this-＞nodes: $this-＞nodes[$name];    }    protected function createnodebyname($rootnodeobj, $name, $attributes, $pid)    {        $tmpobject = $rootnodeobj-＞createnodeobject($pid, $name, $attributes);        $key = isset($attributes[id])? $name.'_'.$attributes[id]: $name.'_'.$this-＞getnodessize();        $this-＞setnode($key, $tmpobject-＞getseq());     return $tmpobject;    }    protected function removenodebyname($rootnodeobj, $name)    {        $rootnodeobj-＞removenodebyid($this-＞getnodeid($name));        if(sizeof($this-＞nodes)==1)            $this-＞nodes = array();     else      unset($this-＞nodes[$name]);    }    protected function getnodebyname($rootnodeobj, $name=null)    {     if($name==null)     {            $tmplist = array();            $tmpids = $this-＞getnodeid();            foreach($tmpids as $key=＞$id)             $tmplist[$key] = $rootnodeobj-＞getnodebyid($id);            return $tmplist;     }     else     {      $id = $this-＞getnodeid($name);      if($id===null)      {             $tmpids = $this-＞getnodeid();             foreach($tmpids as $tkey=＞$tid)             {              if(strpos($key, $name)==0)              {               $id = $tid;               break;              }             }      }      return $rootnodeobj-＞getnodebyid($id);     }    }    public function findnodebypath($path)    {     $pos = strpos($path, '|');     if($pos＜=0)     {      return $this-＞getnode($path);        }        else        {         $tmpobj = $this-＞getnode(substr($path, 0, $pos));         return is_object($tmpobj)? $tmpobj-＞findnodebypath(substr($path, $pos+1)): null;        }    }    public function getsavedata()    {        $data = $this-＞values;        if(sizeof($this-＞attributes)＞0)         $data[attrs] = $this-＞attributes;        $nodelist = $this-＞getnode();        if($nodelist==null)         return $data;        foreach($nodelist as $key=＞$node)        {         $data[$key] = $node-＞getsavedata();        }     return $data;    }    public function getsavexml($level=0)    {     $prefixspace = str_pad("", $level, "/t");     $str = "$prefixspace＜$this-＞nodetag";        foreach($this-＞attributes as $key=＞$value)         $str .= " $key=/"$value/"";        $str .= "＞/r/n";        foreach($this-＞values as $key=＞$value){            if(is_array($value))            {                $str .= "$prefixspace/t＜$key";                foreach($value[attrs] as $attkey=＞$attvalue)                 $str .= " $attkey=/"$attvalue/"";                $tmpstr = $value[value];            }            else            {             $str .= "$prefixspace/t＜$key";             $tmpstr = $value;            }            $tmpstr = trim(trim($tmpstr, "/r/n"));            $str .= ($tmpstr===null || $tmpstr==="")? " /＞/r/n": "＞$tmpstr＜/$key＞/r/n";        }        foreach($this-＞getnode() as $node)         $str .= $node-＞getsavexml($level+1)."/r/n";     $str .= "$prefixspace＜/$this-＞nodetag＞";     return $str;    }    function __destruct()    {     unset($this-＞nodes, $this-＞attributes, $this-＞values);    }}?＞