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    ▪PHP Socket实现的POP3类      本节内容： PHP实现的POP3类，可以直接使用。   基于 POP3/SMTP 协议写的一个操作类，使用 fsockopen ，然后写入/接收数据，只实现了最核心的部分功能，当作是学习 Socket 操作的练手。 其中参.........

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    ▪php使用腾讯QQ微博API接口获取微博内容的代码      本节内容： 腾讯QQ微博API接口获取微博内容的实例。 例子：   代码示例: <?php /** * 使用腾讯QQ微博API接口获取微博内容 * by www. */ define('HDOM_TYPE_ELEMENT', 1); define('HDOM_TYPE_COMMENT', 2); defi.........

代码示例:

<?php
/**
* PHP Socket POP3类
* by www.
*/
class SocketPOPClient
{
    var $strMessage        = '';
    var $intErrorNum    = 0;
    var $bolDebug        = false;

    var $strEmail        = '';
    var $strPasswd        = '';
    var $strHost        = '';
    var $intPort        = 110;
    var $intConnSecond    = 30;
    var $intBuffSize    = 8192;
    var $resHandler        = NULL;
    var $bolIsLogin        = false;
    var $strRequest        = '';
    var $strResponse    = '';
    var $arrRequest        = array();
    var $arrResponse    = array();

    //---------------
    // 基础操作
    //---------------
    //构造函数
    function SocketPOP3Client($strLoginEmail, $strLoginPasswd, $strPopHost='', $intPort='')
    {
        $this->strEmail        = trim(strtolower()($strLoginEmail));
        $this->strPasswd    = trim($strLoginPasswd);
        $this->strHost        = trim(strtolower($strPopHost));
        if ($this->strEmail=='' || $this->strPasswd=='')
        {
            $this->setMessage('Email address or Passwd is empty', 1001);
            return false;
        }
        if (!PReg_match("/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/i", $this->strEmail))
        {
            $this->setMessage('Email address invalid', 1002);
            return false;
        }
        if ($this->strHost=='')
        {
            $this->strHost = substr(strrchr($this->strEmail, "@"), 1);
        }
        if ($intPort!='')
        {
            $this->intPort = $intPort;
        }
        $this->connectHost();
    }

    //连接服务器
    function connectHost()
    {
        if ($this->bolDebug)
        {
            echo "Connection ".$this->strHost." ...\r\n";
        }
        if (!$this->getIsConnect())
        {
            if ($this->strHost=='' || $this->intPort=='')
            {
                $this->setMessage('POP3 host or Port is empty', 1003);
                return false;            
            }
            $this->resHandler = @fsockopen($this->strHost, $this->intPort, &$this->intErrorNum, &$this->strMessage, $this->intConnSecond);
            if (!$this->resHandler)
            {
                $strErrMsg = 'Connection POP3 host: '.$this->strHost.' failed';
                $intErrNum = 2001;
                $this->setMessage($strErrMsg, $intErrNum);
                return false;
            }
            $this->getLineResponse();
            if (!$this->getRestIsSucceed())
            {
                return false;
            }
        }
        return true;
    }
    //关闭连接
    function closeHost()
    {
        if ($this->resHandler)
        {
            fclose($this->resHandler);
        }
        return true;
    }
    //发送指令
    function sendCommand($strCommand)
    {
        if ($this->bolDebug)
        {
            if (!preg_match("/PASS/", $strCommand))
            {
                echo "Send Command: ".$strCommand."\r\n";
            }
            else
            {
                echo "Send Command: PASS ******\r\n";
            }
        }
        if (!$this->getIsConnect())
        {
            return false;
        }
        if (trim($strCommand)=='')
        {
            $this->setMessage('Request command is empty', 1004);
            return false;
        }
        $this->strRequest = $strCommand."\r\n";
        $this->arrRequest[] = $strCommand;
        fputs($this->resHandler, $this->strRequest);
        return true;
    }
    //提取响应信息第一行
    function getLineResponse()
    {
        if (!$this->getIsConnect())
        {
            return false;
        }
        $this->strResponse = fgets($this->resHandler, $this->intBuffSize);
        $this->arrResponse[] = $this->strResponse;
        return $this->strResponse;        
    }
    //提取若干响应信息,$intReturnType是返回值类型, 1为字符串, 2为数组
    function getRespMessage($intReturnType)
    {
        if (!$this->getIsConnect())
        {
            return false;
        }
        if ($intReturnType == 1)
        {
            $strAllResponse = '';
            while(!feof($this->resHandler))
            {
                $strLineResponse = $this->getLineResponse();
                if (preg_match("/^\+OK/", $strLineResponse))
                {
                    continue;
                }
                if (trim($strLineResponse)=='.')
                {
                    break;
                }
                $strAllResponse .= $strLineResponse;
            }
            return $strAllResponse;
        }
        else
        {
            $arrAllResponse = array();
            while(!feof($this->resHandler))
            {
                $strLineResponse = $this->getLineResponse();
                if (preg_match("/^\+OK/", $strLineResponse))
                {
                    continue;
                }
                if (trim($strLineResponse)=='.')
                {
                    break;
                }
                $arrAllResponse[] = $strLineResponse;
            }
            return $arrAllResponse;            
        }
    }
    //提取请求是否成功
    function getRestIsSucceed($strRespMessage='')
    {
        if (trim($responseMessage)=='')
        {
            if ($this->strResponse=='')
            {
                $this->getLineResponse();
            }
            $strRespMessage = $this->strResponse;
        }
        if (trim($strRespMessage)=='')
        {
            $this->setMessage('Response message is empty', 2003);
            return false;
        }
        if (!preg_match("/^\+OK/", $strRespMessage))
        {
            $this->setMessage($strRespMessage, 2000);
            return false;
        }
        return true;
    }
    //获取是否已连接
    function getIsConnect()
    {
        if (!$this->resHandler)
        {
            $this->setMessage("Nonexistent availability connection handler", 2002);
            return false;
        }
        return true;
    }

    //设置消息
    function setMessage($strMessage, $intErrorNum)
    {
        if (trim($strMessage)=='' || $intErrorNum=='')
        {
            return false;
        }
        $this->strMessage    = $strMessage;
        $this->intErrorNum    = $intErrorNum;
        return true;
    }
    //获取消息
    function getMessage()
    {
        return $this->strMessage;
    }
    //获取错误号
    function getErrorNum()
    {
        return $this->intErrorNum;
    }
    //获取请求信息
    function getRequest()
    {
        return $this->strRequest;        
    }
    //获取响应信息
    function getResponse()
    {
        return $this->strResponse;
    }

    //---------------
    // 邮件原子操作
    //---------------
    //登录邮箱
    function popLogin()
    {
        if (!$this->getIsConnect())
        {
            return false;
        }
        $this->sendCommand("USER ".$this->strEmail);
        $this->getLineResponse();
        $bolUserRight = $this->getRestIsSucceed();
        $this->sendCommand("PASS ".$this->strPasswd);
        $this->getLineResponse();
        $bolPassRight = $this->getRestIsSucceed();
        if (!$bolUserRight || !$bolPassRight)
        {
            $this->setMessage($this->strResponse, 2004);
            return false;
        }        
        $this->bolIsLogin = true;
        return true;
    }
    //退出登录
    function popLogout()
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("QUIT");
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return true;
    }
    //获取是否在线
    function getIsOnline()
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("NOOP");
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return true;        
    }
    //获取邮件数量和字节数(返回数组)
    function getMailSum($intReturnType=2)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("STAT");
        $strLineResponse = $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        if ($intReturnType==1)
        {
            return     $this->strResponse;
        }
        else
        {
            $arrResponse = explode()(" ", $this->strResponse);
            if (!is_array($arrResponse) || count($arrResponse)<=0)
            {
                $this->setMessage('STAT command response message is error', 2006);
                return false;
            }
            return array($arrResponse[1], $arrResponse[2]);
        }
    }
    //获取指定邮件得session Id
    function getMailSessId($intMailId, $intReturnType=2)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        if (!$intMailId = intval($intMailId))
        {
            $this->setMessage('Mail message id invalid', 1005);
            return false;
        }
        $this->sendCommand("UIDL ". $intMailId);
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        if ($intReturnType == 1)
        {
            return     $this->strResponse;
        }
        else
        {
            $arrResponse = explode(" ", $this->strResponse);
            if (!is_array($arrResponse) || count($arrResponse)<=0)
            {
                $this->setMessage('UIDL command response message is error', 2006);
                return false;
            }
            return array($arrResponse[1], $arrResponse[2]);
        }
    }
    //取得某个邮件的大小
    function getMailSize($intMailId, $intReturnType=2)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("LIST ".$intMailId);
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        if ($intReturnType == 1)
        {
            return $this->strResponse;
        }
        else
        {
            $arrMessage = explode(' ', $this->strResponse);
            return array($arrMessage[1], $arrMessage[2]);
        }
    }
    //获取邮件基本列表数组
    function getMailBaseList($intReturnType=2)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("LIST");
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return $this->getRespMessage($intReturnType);
    }
    //获取指定邮件所有信息，intReturnType是返回值类型，1是字符串,2是数组
    function getMailMessage($intMailId, $intReturnType=1)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        if (!$intMailId = intval($intMailId))
        {
            $this->setMessage('Mail message id invalid', 1005);
            return false;
        }
        $this->sendCommand("RETR ". $intMailId);
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return $this->getRespMessage($intReturnType);
    }
    //获取某邮件前指定行, $intReturnType 返回值类型，1是字符串，2是数组
    function getMailTopMessage($intMailId, $intTopLines=10, $intReturnType=1)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        if (!$intMailId=intval($intMailId) || !$intTopLines=int($intTopLines))
        {
            $this->setMessage('Mail message id or Top lines number invalid', 1005);
            return false;
        }
        $this->sendCommand("TOP ". $intMailId ." ". $intTopLines);
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return $this->getRespMessage($intReturnType);
    }
    //删除邮件
    function delMail($intMailId)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        if (!$intMailId=intval($intMailId))
        {
            $this->setMessage('Mail message id invalid', 1005);
            return false;
        }
        $this->sendCommand("DELE ".$intMailId);
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return true;
    }
    //重置被删除得邮件标记为未删除
    function resetDeleMail()
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("RSET");
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return true;        
    }
    //---------------
    // 调试操作
    //---------------
    //输出对象信息
    function printObject()
    {
        print_r($this);
        exit;
    }
    //输出错误信息
    function printError()
    {
        echo "[Error Msg] : $strMessage     <br>\n";
        echo "[Error Num] : $intErrorNum <br>\n";
        exit;
    }
    //输出主机信息
    function printHost()
    {
        echo "[Host]  : $this->strHost <br>\n";
        echo "[Port]  : $this->intPort <br>\n";
        echo "[Email] : $this->strEmail <br>\n";
        echo "[Passwd] : ******** <br>\n";
        exit;
    }
    //输出连接信息
    function printConnect()
    {
        echo "[Connect] : $this->resHandler <br>\n";
        echo "[Request] : $this->strRequest <br>\n";
        echo "[Response] : $this->strResponse <br>\n";
        exit;
    }
}
?>

代码示例:

<?
//测试代码
//例如：$o = SocketPOP3Client('邮箱地址', '密码', 'POP3服务器', 'POP3端口')
/*
set_time_limit(0);
$o = new SocketPOPClient('abc@126.com', '123456', 'pop.126.com', '110');
$o->popLogin();
print_r($o->getMailBaseList());
print_r($o->getMailSum(1));
print_r($o->getMailTopMessage(2, 2, 2));
$o->popLogout();
$o->closeHost();
$o->printObject();
*/
?>

前10条记录：select * from table limit 0,10
第11至20条记录：select * from table limit 10,10
第21至30条记录：select * from table limit 20,10
……

代码示例:

<?php
// 建立数据库连接
$link = mysql_connect()("localhost", "mysql_user", "mysql_passWord")
      or die("Could not connect: " . mysql_error());
// 获取当前页数
if( isset()($_GET['page']) ){
   $page = intval( $_GET['page'] );
}
else{
   $page = 1;
}
// 每页数量
$PageSize = 10;
// 获取总数据量
$sql = "select count(*) as amount from table";
$result = mysql_query()($sql);
$row = mysql_fetch_row($result);
$amount = $row['amount'];
// 记算总共有多少页
if( $amount ){
   if( $amount < $page_size ){ $page_count = 1; }   //如果总数据量小于$PageSize，那么只有一页
   if( $amount % $page_size ){          //取总数据量除以每页数的余数
       $page_count = (int)($amount / $page_size) + 1; //如果有余数，则页数等于总数据量除以每页数的结果取整再加一
   }else{
       $page_count = $amount / $page_size;  //如果没有余数，则页数等于总数据量除以每页数的结果
   }
}
else{
   $page_count = 0;
}
// 翻页链接
$page_string = '';
if( $page == 1 ){
   $page_string .= '第一页|上一页|';
}
else{
   $page_string .= '<a href=/blog_article/page/1/gt;第一页/lt;/a/gt;_/lt;a.html href=/blog_article/page/.html'.($page-1).'>上一页</a>|';
}
if( ($page == $page_count) || ($page_count == 0) ){
   $page_string .= '下一页|尾页';
}
else{
   $page_string .= '<a href=/blog_article/page/.html'.($page+1).'>下一页</a>|<a href=/blog_article/page/.html'.$page_count.'>尾页</a>';
}
// 获取数据，以二维数组格式返回结果
if( $amount ){
   $sql = "select * from table order by id desc limit ". ($page-1)*$page_size .", $page_size";
   $result = mysql_query($sql);

   while ( $row = mysql_fetch_row($result) ){
       $rowset[] = $row;
   }
}else{
   $rowset = array();
}
// 没有包含显示结果的代码，那不在讨论范围，只要用foreach就可以很简单的用得到的二维数组来显示结果
?>

代码示例:

<?php
// FileName: Pager.class.php
// 分页类，此类仅用于处理数据结构，不负责处理显示
Class Pager
{
   var $PageSize; //每页的数量
   var $CurrentPageID;        //当前的页数
   var $NextPageID;           //下一页
   var $PreviousPageID;       //上一页
   var $numPages; //总页数
   var $numItems; //总记录数
   var $isFirstPage;          //是否第一页
   var $isLastPage;           //是否最后一页
   var $sql;      //sql查询语句

  function Pager($option)
   {
       global $db;
       $this->_setOptions($option);
       // 总条数
       if ( !isset($this->numItems) )
       {
           $res = $db->query($this->sql);
           $this->numItems = $res->numRows();
       }
       // 总页数
       if ( $this->numItems > 0 )
       {
           if ( $this->numItems < $this->PageSize ){ $this->numPages = 1; }
           if ( $this->numItems % $this->PageSize )
           {
   $this->numPages= (int)($this->numItems / $this->PageSize) + 1;
           }
           else
           {
   $this->numPages = $this->numItems / $this->PageSize;
           }
       }
       else
       {
           $this->numPages = 0;
       }

       switch ( $this->CurrentPageID )
       {
           case $this->numPages == 1:
   $this->isFirstPage = true;
   $this->isLastPage = true;
   break;
           case 1:
   $this->isFirstPage = true;
   $this->isLastPage = false;
   break;
           case $this->numPages:
   $this->isFirstPage = false;
   $this->isLastPage = true;
   break;
           default:
   $this->isFirstPage = false;
   $this->isLastPage = false;
       }

       if ( $this->numPages > 1 )
       {
           if ( !$this->isLastPage ) { $this->NextPageID = $this->CurrentPageID + 1; }
           if ( !$this->isFirstPage ) { $this->PreviousPageID = $this->CurrentPageID - 1; }
       }

       return true;
   }

   /***
    *
    * 返回结果集的数据库连接
    * 在结果集比较大的时候可以直接使用这个方法获得数据库连接，然后在类之外遍历，这样开销较小
    * 如果结果集不是很大，可以直接使用getPageData的方式获取二维数组格式的结果
    * getPageData方法也是调用本方法来获取结果的
    *
    ***/

   function getDataLink()
   {
       if ( $this->numItems )
       {
           global $db;

           $PageID = $this->CurrentPageID;

           $from = ($PageID - 1)*$this->PageSize;
           $count = $this->PageSize;
           $link = $db->limitQuery($this->sql, $from, $count);   //使用Pear DB::limitQuery方法保证数据库兼容性

           return $link;
       }
       else
       {
           return false;
       }
   }

   /***
    *
    * 以二维数组的格式返回结果集
    *
    ***/

   function getPageData()
   {
       if ( $this->numItems )
       {
           if ( $res = $this->getDataLink() )
           {      
   if ( $res->numRows() )
   {
       while ( $row = $res->fetchRow() )
       {
           $result[] = $row;
       }
   }
   else
   {
       $result = array();
   }

   return $result;
           }
           else
           {
   return false;
           }
       }
       else
       {
           return false;
       }
   }

   function _setOptions($option)
   {
       $allow_options = array(
       'PageSize',
       'CurrentPageID',
       'sql',
       'numItems'
       );

       foreach ( $option as $key => $value )
       {
           if ( in_array($key, $allow_options) && ($value != null) )
           {
   $this->$key = $value;
           }
       }

       return true;
   }
}
?>

调用示例：
<?php
// FileName: test_pager.php
// 省略了使用pear db类建立数据库连接的代码
require "Pager.class.php";
if ( isset($_GET['page']) )
{
   $page = (int)$_GET['page'];
}
else
{
   $page = 1;
}
$sql = "select * from table order by id";
$pager_option = array(
       "sql" => $sql,
       "PageSize" => 10,
       "CurrentPageID" => $page
);
if ( isset($_GET['numItems']) )
{
   $pager_option['numItems'] = (int)$_GET['numItems'];
}
$pager = @new Pager($pager_option);
$data = $pager->getPageData();
if ( $pager->isFirstPage )
{
   $turnover = "首页|上一页|";
}
else
{
   $turnover = "<a href='/blog_article/page/1/amp;numItems/.html".$pager->numItems."'>首页</a>|<a href='/blog_article/page/.html".$pager->PreviousPageID."&numItems=".$pager->numItems."'>上一页</a>|";
}
if ( $pager->isLastPage )
{
   $turnover .= "下一页|尾页";
}
else
{
   $turnover .= "<a href='/blog_article/page/.html".$pager->NextPageID."&numItems=".$pager->numItems."'>下一页</a>|<a href='/blog_article/page/.html".$pager->numPages."&numItems=".$pager->numItems."'>尾页</a>";
}
?>

代码示例:

<?php
Class MemberPager extends Pager
{
   function showMemberList()
   {
       global $db;

       $data = $this->getPageData();
// 显示结果的代码
       // ......
   }
}
/// 调用
if ( isset($_GET['page']) )
{
   $page = (int)$_GET['page'];
}
else
{
   $page = 1;
}
$sql = "select * from members order by id";
$pager_option = array(
       "sql" => $sql,
       "PageSize" => 10,
       "CurrentPageID" => $page
);
if ( isset($_GET['numItems']) )
{
   $pager_option['numItems'] = (int)$_GET['numItems'];
}
$pager = @new MemberPager($pager_option);
$pager->showMemberList();
?>

代码示例:

<?php
/**
* 使用腾讯QQ微博API接口获取微博内容
* by www.
*/
define('HDOM_TYPE_ELEMENT', 1);
define('HDOM_TYPE_COMMENT', 2);
define('HDOM_TYPE_TEXT',    3);
define('HDOM_TYPE_ENDTAG',  4);
define('HDOM_TYPE_ROOT',    5);
define('HDOM_TYPE_UNKNOWN', 6);
define('HDOM_QUOTE_DOUBLE', 0);
define('HDOM_QUOTE_SINGLE', 1);
define('HDOM_QUOTE_NO',     3);
define('HDOM_INFO_BEGIN',   0);
define('HDOM_INFO_END',     1);
define('HDOM_INFO_QUOTE',   2);
define('HDOM_INFO_SPACE',   3);
define('HDOM_INFO_TEXT',    4);
define('HDOM_INFO_INNER',   5);
define('HDOM_INFO_OUTER',   6);
define('HDOM_INFO_ENDSPACE',7);
// helper functions
// ---------------
// get html dom form file
function file_get_html() {
    $dom = new simple_html_dom;
    $args = func_get_args();
    $dom->load(call_user_func_array('file_get_contents', $args), true);
    return $dom;
}
// get html dom form string
function str_get_html($str, $lowercase=true) {
    $dom = new simple_html_dom;
    $dom->load($str, $lowercase);
    return $dom;
}
// dump html dom tree
function dump_html_tree($node, $show_attr=true, $deep=0) {
    $lead = str_repeat('    ', $deep);
    echo $lead.$node->tag;
    if ($show_attr && count($node->attr)>0) {
        echo '(';
        foreach($node->attr as $k=>$v)
            echo "[$k]=>\"".$node->$k.'", ';
        echo ')';
    }
    echo "\n";
    foreach($node->nodes as $c)
        dump_html_tree($c, $show_attr, $deep+1);
}
// get dom form file (dePRecated)
function file_get_dom() {
    $dom = new simple_html_dom;
    $args = func_get_args();
    $dom->load(call_user_func_array('file_get_contents', $args), true);
    return $dom;
}
// get dom form string (deprecated)
function str_get_dom($str, $lowercase=true) {
    $dom = new simple_html_dom;
    $dom->load($str, $lowercase);
    return $dom;
}
// simple html dom node
// ---------------
class simple_html_dom_node {
    public $nodetype = HDOM_TYPE_TEXT;
    public $tag = 'text';
    public $attr = array();
    public $children = array();
    public $nodes = array();
    public $parent = null;
    public $_ = array();
    private $dom = null;
    function __construct($dom) {
        $this->dom = $dom;
        $dom->nodes[] = $this;
    }
    function __destruct() {
        $this->clear();
    }
    function __toString() {
        return $this->outertext();
    }
    // clean up memory due to php5 circular references memory leak...
    function clear() {
        $this->dom = null;
        $this->nodes = null;
        $this->parent = null;
        $this->children = null;
    }

    // dump node's tree
    function dump($show_attr=true) {
        dump_html_tree($this, $show_attr);
    }
    // returns the parent of node
    function parent() {
        return $this->parent;
    }
    // returns children of node
    function children($idx=-1) {
        if ($idx===-1) return $this->children;
        if (isset()($this->children[$idx])) return $this->children[$idx];
        return null;
    }
    // returns the first child of node
    function first_child() {
        if (count($this->children)>0) return $this->children[0];
        return null;
    }
    // returns the last child of node
    function last_child() {
        if (($count=count($this->children))>0) return $this->children[$count-1];
        return null;
    }
    // returns the next sibling of node   
    function next_sibling() {
        if ($this->parent===null) return null;
        $idx = 0;
        $count = count($this->parent->children);
        while ($idx<$count && $this!==$this->parent->children[$idx])
            ++$idx;
        if (++$idx>=$count) return null;
        return $this->parent->children[$idx];
    }
    // returns the previous sibling of node
    function prev_sibling() {
        if ($this->parent===null) return null;
        $idx = 0;
        $count = count($this->parent->children);
        while ($idx<$count && $this!==$this->parent->children[$idx])
            ++$idx;
        if (--$idx<0) return null;
        return $this->parent->children[$idx];
    }
    // get dom node's inner html
    function innertext() {
        if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
        if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
        $ret = '';
        foreach($this->nodes as $n)
            $ret .= $n->outertext();
        return $ret;
    }
    // get dom node's outer text (with tag)
    function outertext() {
        if ($this->tag==='root') return $this->innertext();
        // trigger callback
        if ($this->dom->callback!==null)
            call_user_func_array($this->dom->callback, array($this));
        if (isset($this->_[HDOM_INFO_OUTER])) return $this->_[HDOM_INFO_OUTER];
        if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
        // render begin tag
        $ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup();
        // render inner text
        if (isset($this->_[HDOM_INFO_INNER]))
            $ret .= $this->_[HDOM_INFO_INNER];
        else {
            foreach($this->nodes as $n)
                $ret .= $n->outertext();
        }
        // render end tag
        if(isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END]!=0)
            $ret .= '</'.$this->tag.'>';
        return $ret;
    }
    // get dom node's plain text
    function text() {
        if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
        switch ($this->nodetype) {
            case HDOM_TYPE_TEXT: return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
            case HDOM_TYPE_COMMENT: return '';
            case HDOM_TYPE_UNKNOWN: return '';
        }
        if (strcasecmp($this->tag, 'script')===0) return '';
        if (strcasecmp($this->tag, 'style')===0) return '';
        $ret = '';
        foreach($this->nodes as $n)
            $ret .= $n->text();
        return $ret;
    }

    function xmltext() {
        $ret = $this->innertext();
        $ret = str_ireplace('<![CDATA[', '', $ret);
        $ret = str_replace()(']]>', '', $ret);
        return $ret;
    }
    // build node's text with tag
    function makeup() {
        // text, comment, unknown
        if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
        $ret = '<'.$this->tag;
        $i = -1;
        foreach($this->attr as $key=>$val) {
            ++$i;
            // skip removed attribute
            if ($val===null || $val===false)
                continue;
            $ret .= $this->_[HDOM_INFO_SPACE][$i][0];
            //no value attr: nowrap, checked selected...
            if ($val===true)
                $ret .= $key;
            else {
                switch($this->_[HDOM_INFO_QUOTE][$i]) {
                    case HDOM_QUOTE_DOUBLE: $quote = '"'; break;
                    case HDOM_QUOTE_SINGLE: $quote = '\''; break;
                    default: $quote = '';
                }
                $ret .= $key.$this->_[HDOM_INFO_SPACE][$i][1].'='.$this->_[HDOM_INFO_SPACE][$i][2].$quote.$val.$quote;
            }
        }
        $ret = $this->dom->restore_noise($ret);
        return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>';
    }
    // find elements by CSS selector
    function find($selector, $idx=null) {
        $selectors = $this->parse_selector($selector);
        if (($count=count($selectors))===0) return array();
        $found_keys = array();
        // find each selector
        for ($c=0; $c<$count; ++$c) {
            if (($levle=count($selectors[0]))===0) return array();
            if (!isset($this->_[HDOM_INFO_BEGIN])) return array();
            $head = array($this->_[HDOM_INFO_BEGIN]=>1);
            // handle descendant selectors, no recursive!
            for ($l=0; $l<$levle; ++$l) {
                $ret = array();
                foreach($head as $k=>$v) {
                    $n = ($k===-1) ? $this->dom->root : $this->dom->nodes[$k];
                    $n->seek($selectors[$c][$l], $ret);
                }
                $head = $ret;
            }
            foreach($head as $k=>$v) {
                if (!isset($found_keys[$k]))
                    $found_keys[$k] = 1;
            }
        }
        // sort keys
        ksort($found_keys);
        $found = array();
        foreach($found_keys as $k=>$v)
            $found[] = $this->dom->nodes[$k];
        // return nth-element or array
        if (is_null($idx)) return $found;
  else if ($idx<0) $idx = count($found) + $idx;
        return (isset($found[$idx])) ? $found[$idx] : null;
    }
    // seek for given conditions
    protected function seek($selector, &$ret) {
        list($tag, $key, $val, $exp, $no_key) = $selector;
        // xpath index
        if ($tag && $key && is_numeric($key)) {
            $count = 0;
            foreach ($this->children as $c) {
                if ($tag==='*' || $tag===$c->tag) {
                    if (++$count==$key) {
                        $ret[$c->_[HDOM_INFO_BEGIN]] = 1;
                        return;
                    }
                }
            }
            return;
        }
        $end = (!empty($this->_[HDOM_INFO_END])) ? $this->_[HDOM_INFO_END] : 0;
        if ($end==0) {
            $parent = $this->parent;
            while (!isset($parent->_[HDOM_INFO_END]) && $parent!==null) {
                $end -= 1;
                $parent = $parent->parent;
            }
            $end += $parent->_[HDOM_INFO_END];
        }
        for($i=$this->_[HDOM_INFO_BEGIN]+1; $i<$end; ++$i) {
            $node = $this->dom->nodes[$i];
            $pass = true;
            if ($tag==='*' && !$key) {
                if (in_array($node, $this->children, true))
                    $ret[$i] = 1;
                continue;
            }
            // compare tag
            if ($tag && $tag!=$node->tag && $tag!=='*') {$pass=false;}
            // compare key
            if ($pass && $key) {
                if ($no_key) {
                    if (isset($node->attr[$key])) $pass=false;
                }
                else if (!isset($node->attr[$key])) $pass=false;
            }
            // compare value
            if ($pass && $key && $val  && $val!=='*') {
                $check = $this->match($exp, $val, $node->attr[$key]);
                // handle multiple class
                if (!$check && strcasecmp($key, 'class')===0) {
                    foreach(explode()(' ',$node->attr[$key]) as $k) {
                        $check = $this->match($exp, $val, $k);
                        if ($check) break;
                    }
                }
                if (!$check) $pass = false;
            }
            if ($pass) $ret[$i] = 1;
            unset($node);
        }
    }
    protected function match($exp, $pattern, $value) {
        switch ($exp) {
            case '=':
                return ($value===$pattern);
            case '!=':
                return ($value!==$pattern);
            case '^=':
                return preg_match("/^".preg_quote($pattern,'/')."/", $value);
            case '$=':
                return preg_match("/".preg_quote($pattern,'/')."$/", $value);
            case '*=':
                if ($pattern[0]=='/')
                    return preg_match($pattern, $value);
                return preg_match("/".$pattern."/i", $value);
        }
        return false;
    }
    protected function parse_selector($selector_string) {
        // pattern of CSS selectors, modified from mootools
        $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is";
        preg_match_all($pattern, trim($selector_string).' ', $matches, PREG_SET_ORDER);
        $selectors = array();
        $result = array();
        //print_r($matches);
        foreach ($matches as $m) {
            $m[0] = trim($m[0]);
            if ($m[0]==='' || $m[0]==='/' || $m[0]==='//') continue;
            // for borwser grnreated xpath
            if ($m[1]==='tbody') continue;
            list($tag, $key, $val, $exp, $no_key) = array($m[1], null, null, '=', false);
            if(!empty($m[2])) {$key='id'; $val=$m[2];}
            if(!empty($m[3])) {$key='class'; $val=$m[3];}
            if(!empty($m[4])) {$key=$m[4];}
            if(!empty($m[5])) {$exp=$m[5];}
            if(!empty($m[6])) {$val=$m[6];}
            // convert to lowercase
            if ($this->dom->lowercase) {$tag=strtolower()($tag); $key=strtolower($key);}
            //elements that do NOT have the specified attribute
            if (isset($key[0]) && $key[0]==='!') {$key=substr($key, 1); $no_key=true;}
            $result[] = array($tag, $key, $val, $exp, $no_key);
            if (trim($m[7])===',') {
                $selectors[] = $result;
                $result = array();
            }
        }
        if (count($result)>0)
            $selectors[] = $result;
        return $selectors;
    }
    function __get($name) {
        if (isset($this->attr[$name])) return $this->attr[$name];
        switch($name) {
            case 'outertext': return $this->outertext();
            case 'innertext': return $this->innertext();
            case 'plaintext': return $this->text();
            case 'xmltext': return $this->xmltext();
            default: return array_key_exists($name, $this->attr);
        }
    }
    function __set($name, $value) {
        switch($name) {
            case 'outertext': return $this->_[HDOM_INFO_OUTER] = $value;
            case 'innertext':
                if (isset($this->_[HDOM_INFO_TEXT])) return $this->_[HDOM_INFO_TEXT] = $value;
                return $this->_[HDOM_INFO_INNER] = $value;
        }
        if (!isset($this->attr[$name])) {
            $this->_[HDOM_INFO_SPACE][] = array(' ', '', '');
            $this->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
        }
        $this->attr[$name] = $value;
    }
    function __isset($name) {
        switch($name) {
            case 'outertext': return true;
            case 'innertext': return true;
            case 'plaintext': return true;
        }
        //no value attr: nowrap, checked selected...
        return (array_key_exists($name, $this->attr)) ? true : isset($this->attr[$name]);
    }
    function __unset($name) {
        if (isset($this->attr[$name]))
            unset($this->attr[$name]);
    }
    // camel naming conventions
    function getAllAttributes() {return $this->attr;}
    function getAttribute($name) {return $this->__get($name);}
    function setAttribute($name, $value) {$this->__set($name, $value);}
    function hasAttribute($name) {return $this->__isset($name);}
    function removeAttribute($name) {$this->__set($name, null);}
    function getElementById($id) {return $this->find("#$id", 0);}
    function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
    function getElementByTagName($name) {return $this->find($name, 0);}
    function getElementsByTagName($name, $idx=null) {return $this->find($name, $idx);}
    function parentNode() {return $this->parent();}
    function childNodes($idx=-1) {return $this->children($idx);}
    function firstChild() {return $this->first_child();}
    function lastChild() {return $this->last_child();}
    function nextSibling() {return $this->next_sibling();}
    function previousSibling() {return $this->prev_sibling();}
}
// simple html dom parser
// -----------------------------------------------------------------------------
class simple_html_dom {
    public $root = null;
    public $nodes = array();
    public $callback = null;
    public $lowercase = false;
    protected $pos;
    protected $doc;
    protected $char;
    protected $size;
    protected $cursor;
    protected $parent;
    protected $noise = array();
    protected $token_blank = " \t\r\n";
    protected $token_equal = ' =/>';
    protected $token_slash = " />\r\n\t";
    protected $token_attr = ' >';
    // use isset instead of in_array, performance boost about 30%...
    protected $self_closing_tags = array('img'=>1, 'br'=>1, 'input'=>1, 'meta'=>1, 'link'=>1, 'hr'=>1, 'base'=>1, 'embed'=>1, 'spacer'=>1);
    protected $block_tags = array('root'=>1, 'body'=>1, 'form'=>1, 'div'=>1, 'span'=>1, 'table'=>1);
    protected $optional_closing_tags = array(
        'tr'=>array('tr'=>1, 'td'=>1, 'th'=>1),
        'th'=>array('th'=>1),
        'td'=>array('td'=>1),
        'li'=>array('li'=>1),
        'dt'=>array('dt'=>1, 'dd'=>1),
        'dd'=>array('dd'=>1, 'dt'=>1),
        'dl'=>array('dd'=>1, 'dt'=>1),
        'p'=>array('p'=>1),
        'nobr'=>array('nobr'=>1),
    );
    function __construct($str=null) {
        if ($str) {
            if (preg_match("/^http:\/\//i",$str) || is_file($str))
                $this->load_file($str);
            else
                $this->load($str);
        }
    }
    http://www.devdao.com/
    function __destruct() {
        $this->clear();
    }
    // load html from string
    function load($str, $lowercase=true) {
        // prepare
        $this->prepare($str, $lowercase);
        // strip out comments
        $this->remove_noise("'<!--(.*?)-->'is");
        // strip out cdata
        $this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true);
        // strip out <style> tags
        $this->remove_noise("'<\s*style[^>]*[^/]>(.*?)<\s*/\s*style\s*>'is");
        $this->remove_noise("'<\s*style\s*>(.*?)<\s*/\s*style\s*>'is");
        // strip out <script> tags
        $this->remove_noise("'<\s*script[^>]*[^/]>(.*?)<\s*/\s*script\s*>'is");
        $this->remove_noise("'<\s*script\s*>(.*?)<\s*/\s*script\s*>'is");
        // strip out preformatted tags
        $this->remove_noise("'<\s*(?:code)[^>]*>(.*?)<\s*/\s*(?:code)\s*>'is");
        // strip out server side scripts
        $this->remove_noise("'(<\?)(.*?)(\?>)'s", true);
        // strip smarty scripts
        $this->remove_noise("'(\{\w)(.*?)(\})'s", true);
        // parsing
        while ($this->parse());
        // end
        $this->root->_[HDOM_INFO_END] = $this->cursor;
    }
    // load html from file
    function load_file() {
        $args = func_get_args();
        $this->load(call_user_func_array('file_get_contents', $args), true);
    }
    // set callback function
    function set_callback($function_name) {
        $this->callback = $function_name;
    }
    // remove callback function
    function remove_callback() {
        $this->callback = null;
    }
    // save dom as string
    function save($filepath='') {
        $ret = $this->root->innertext();
        if ($filepath!=='') file_put_contents($filepath, $ret);
        return $ret;
    }
    // find dom node by css selector
    function find($selector, $idx=null) {
        return $this->root->find($selector, $idx);
    }
    // clean up memory due to php5 circular references memory leak...
    function clear() {
        foreach($this->nodes as $n) {$n->clear(); $n = null;}
        if (isset($this->parent)) {$this->parent->clear(); unset($this->parent);}
        if (isset($this->root)) {$this->root->clear(); unset($this->root);}
        unset($this->doc);
        unset($this->noise);
    }

    function dump($show_attr=true) {
        $this->root->dump($show_attr);
    }
    // prepare HTML data and init everything
    protected function prepare($str, $lowercase=true) {
        $this->clear();
        $this->doc = $str;
        $this->pos = 0;
        $this->cursor = 1;
        $this->noise = array();
        $this->nodes = array();
        $this->lowercase = $lowercase;
        $this->root = new simple_html_dom_node($this);
        $this->root->tag = 'root';
        $this->root->_[HDOM_INFO_BEGIN] = -1;
        $this->root->nodetype = HDOM_TYPE_ROOT;
        $this->parent = $this->root;
        // set the length of content
        $this->size = strlen($str);
        if ($this->size>0) $this->char = $this->doc[0];
    }
    // parse html content
    protected function parse() {
        if (($s = $this->copy_until_char('<'))==='')
            return $this->read_tag();
        // text
        $node = new simple_html_dom_node($this);
        ++$this->cursor;
        $node->_[HDOM_INFO_TEXT] = $s;
        $this->link_nodes($node, false);
        return true;
    }
    // read tag info
    protected function read_tag() {
        if ($this->char!=='<') {
            $this->root->_[HDOM_INFO_END] = $this->cursor;
            return false;
        }
        $begin_tag_pos = $this->pos;
        $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
        // end tag
        if ($this->char==='/') {
            $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
            $this->skip($this->token_blank_t);
            $tag = $this->copy_until_char('>');
            // skip attributes in end tag
            if (($pos = strpos($tag, ' '))!==false)
                $tag = substr($tag, 0, $pos);
            $parent_lower = strtolower($this->parent->tag);
            $tag_lower = strtolower($tag);
            if ($parent_lower!==$tag_lower) {
                if (isset($this->optional_closing_tags[$parent_lower]) && isset($this->block_tags[$tag_lower])) {
                    $this->parent->_[HDOM_INFO_END] = 0;
                    $org_parent = $this->parent;
                    while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
                        $this->parent = $this->parent->parent;
                    if (strtolower($this->parent->tag)!==$tag_lower) {
                        $this->parent = $org_parent; // restore origonal parent
                        if ($this->parent->parent) $this->parent = $this->parent->parent;
                        $this->parent->_[HDOM_INFO_END] = $this->cursor;
                        return $this->as_text_node($tag);
                    }
                }
                else if (($this->parent->parent) && isset($this->block_tags[$tag_lower])) {
                    $this->parent->_[HDOM_INFO_END] = 0;
                    $org_parent = $this->parent;
                    while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
                        $this->parent = $this->parent->parent;
                    if (strtolower($this->parent->tag)!==$tag_lower) {
                        $this->parent = $org_parent; // restore origonal parent
                        $this->parent->_[HDOM_INFO_END] = $this->cursor;
                        return $this->as_text_node($tag);
                    }
                }
                else if (($this->parent->parent) && strtolower($this->parent->parent->tag)===$tag_lower) {
                    $this->parent->_[HDOM_INFO_END] = 0;
                    $this->parent = $this->parent->parent;
                }
                else
                    return $this->as_text_node($tag);
            }
            $this->parent->_[HDOM_INFO_END] = $this->cursor;
            if ($this->parent->parent) $this->parent = $this->parent->parent;
            $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
            return true;
        }
        $node = new simple_html_dom_node($this);
        $node->_[HDOM_INFO_BEGIN] = $this->cursor;
        ++$this->cursor;
        $tag = $this->copy_until($this->token_slash);
        // doctype, cdata & comments...
        if (isset($tag[0]) && $tag[0]==='!') {
            $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until_char('>');
            if (isset($tag[2]) && $tag[1]==='-' && $tag[2]==='-') {
                $node->nodetype = HDOM_TYPE_COMMENT;
                $node->tag = 'comment';
            } else {
                $node->nodetype = HDOM_TYPE_UNKNOWN;
                $node->tag = 'unknown';
            }
            if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
            $this->link_nodes($node, true);
            $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
            return true;
        }
        // text
        if ($pos=strpos($tag, '<')!==false) {
            $tag = '<' . substr($tag, 0, -1);
            $node->_[HDOM_INFO_TEXT] = $tag;
            $this->link_nodes($node, false);
            $this->char = $this->doc[--$this->pos]; // prev
            return true;
        }
        if (!preg_match("/^[\w-:]+$/", $tag)) {
            $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>');
            if ($this->char==='<') {
                $this->link_nodes($node, false);
                return true;
            }
            if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
            $this->link_nodes($node, false);
            $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
            return true;
        }
        // begin tag
        $node->nodetype = HDOM_TYPE_ELEMENT;
        $tag_lower = strtolower($tag);
        $node->tag = ($this->lowercase) ? $tag_lower : $tag;
        // handle optional closing tags
        if (isset($this->optional_closing_tags[$tag_lower]) ) {
            while (isset($this->optional_closing_tags[$tag_lower][strtolower($this->parent->tag)])) {
                $this->parent->_[HDOM_INFO_END] = 0;
                $this->parent = $this->parent->parent;
            }
            $node->parent = $this->parent;
        }
        $guard = 0; // prevent infinity loop
        $space = array($this->copy_skip($this->token_blank), '', '');
        // attributes
        do {
            if ($this->char!==null && $space[0]==='') break;
            $name = $this->copy_until($this->token_equal);
            if($guard===$this->pos) {
                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
                continue;
            }
            $guard = $this->pos;
            // handle endless '<'
            if($this->pos>=$this->size-1 && $this->char!=='>') {
                $node->nodetype = HDOM_TYPE_TEXT;
                $node->_[HDOM_INFO_END] = 0;
                $node->_[HDOM_INFO_TEXT] = '<'.$tag . $space[0] . $name;
                $node->tag = 'text';
                $this->link_nodes($node, false);
                return true;
            }
            // handle mismatch '<'
            if($this->doc[$this->pos-1]=='<') {
                $node->nodetype = HDOM_TYPE_TEXT;
                $node->tag = 'text';
                $node->attr = array();
                $node->_[HDOM_INFO_END] = 0;
                $node->_[HDOM_INFO_TEXT] = substr($this->doc, $begin_tag_pos, $this->pos-$begin_tag_pos-1);
                $this->pos -= 2;
                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
                $this->link_nodes($node, false);
                return true;
            }
            if ($name!=='/' && $name!=='') {
                $space[1] = $this->copy_skip($this->token_blank);
                $name = $this->restore_noise($name);
                if ($this->lowercase) $name = strtolower($name);
                if ($this->char==='=') {
                    $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
                    $this->parse_attr($node, $name, $space);
                }
                else {
                    //no value attr: nowrap, checked selected...
                    $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
                    $node->attr[$name] = true;
                    if ($this->char!='>') $this->char = $this->doc[--$this->pos]; // prev
                }
                $node->_[HDOM_INFO_SPACE][] = $space;
                $space = array($this->copy_skip($this->token_blank), '', '');
            }
            else
                break;
        } while($this->char!=='>' && $this->char!=='/');
        $this->link_nodes($node, true);
        $node->_[HDOM_INFO_ENDSPACE] = $space[0];
        // check self closing
        if ($this->copy_until_char_escape('>')==='/') {
            $node->_[HDOM_INFO_ENDSPACE] .= '/';
            $node->_[HDOM_INFO_END] = 0;
        }
        else {
            // reset parent
            if (!isset($this->self_closing_tags[strtolower($node->tag)])) $this->parent = $node;
        }
        $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
        return true;
    }
    // parse attributes
    protected function parse_attr($node, $name, &$space) {
        $space[2] = $this->copy_skip($this->token_blank);
        switch($this->char) {
            case '"':
                $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
                $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('"'));
                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
                break;
            case '\'':
                $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_SINGLE;
                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
                $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('\''));
                $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
                break;
            default:
                $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
                $node->attr[$name] = $this->restore_noise($this->copy_until($this->token_attr));
        }
    }
    // link node's parent
    protected function link_nodes(&$node, $is_child) {
        $node->parent = $this->parent;
        $this->parent->nodes[] = $node;
        if ($is_child)
            $this->parent->children[] = $node;
    }
    // as a text node
    protected function as_text_node($tag) {
        $node = new simple_html_dom_node($this);
        ++$this->cursor;
        $node->_[HDOM_INFO_TEXT] = '</' . $tag . '>';
        $this->link_nodes($node, false);
        $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
        return true;
    }
    protected function skip($chars) {
        $this->pos += strspn($this->doc, $chars, $this->pos);
        $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
    }
    protected function copy_skip($chars) {
        $pos = $this->pos;
        $len = strspn($this->doc, $chars, $pos);
        $this->pos += $len;
        $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
        if ($len===0) return '';
        return substr($this->doc, $pos, $len);
    }
    protected function copy_until($chars) {
        $pos = $this->pos;
        $len = strcspn($this->doc, $chars, $pos);
        $this->pos += $len;
        $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
        return substr($this->doc, $pos, $len);
    }
    protected function copy_until_char($char) {
        if ($this->char===null) return '';
        if (($pos = strpos($this->doc, $char, $this->pos))===false) {
            $ret = substr($this->doc, $this->pos, $this->size-$this->pos);
            $this->char = null;
            $this->pos = $this->size;
            return $ret;
        }
        if ($pos===$this->pos) return '';
        $pos_old = $this->pos;
        $this->char = $this->doc[$pos];
        $this->pos = $pos;
        return substr($this->doc, $pos_old, $pos-$pos_old);
    }
    protected function copy_until_char_escape($char) {
        if ($this->char===null) return '';
        $start = $this->pos;
        while(1) {
            if (($pos = strpos($this->doc, $char, $start))===false) {
                $ret = substr($this->doc, $this->pos, $this->size-$this->pos);
                $this->char = null;
                $this->pos = $this->size;
                return $ret;
            }
            if ($pos===$this->pos) return '';
            if ($this->doc[$pos-1]==='\\') {
                $start = $pos+1;
                continue;
            }
            $pos_old = $this->pos;
            $this->char = $this->doc[$pos];
            $this->pos = $pos;
            return substr($this->doc, $pos_old, $pos-$pos_old);
        }
    }
    // remove noise from html content
    protected function remove_noise($pattern, $remove_tag=false) {
        $count = preg_match_all($pattern, $this->doc, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE);
        for ($i=$count-1; $i>-1; --$i) {
            $key = '___noise___'.sprintf()('% 3d', count($this->noise)+100);
            $idx = ($remove_tag) ? 0 : 1;
            $this->noise[$key] = $matches[$i][$idx][0];
            $this->doc = substr_replace($this->doc, $key, $matches[$i][$idx][1], strlen($matches[$i][$idx][0]));
        }
        // reset the length of content
        $this->size = strlen($this->doc);
        if ($this->size>0) $this->char = $this->doc[0];
    }
    // restore noise to html content
    function restore_noise($text) {
        while(($pos=strpos($text, '___noise___'))!==false) {
            $key = '___noise___'.$text[$pos+11].$text[$pos+12].$text[$pos+13];
            if (isset($this->noise[$key]))
                $text = substr($text, 0, $pos).$this->noise[$key].substr($text, $pos+14);
        }
        return $text;
    }
    function __toString() {
        return $this->root->innertext();
    }
    function __get($name) {
        switch($name) {
            case 'outertext': return $this->root->innertext();
            case 'innertext': return $this->root->innertext();
            case 'plaintext': return $this->root->text();
        }
    }
    // camel naming conventions
    function childNodes($idx=-1) {return $this->root->childNodes($idx);}
    function firstChild() {return $this->root->first_child();}
    function lastChild() {return $this->root->last_child();}
    function getElementById($id) {return $this->find("#$id", 0);}
    function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
    function getElementByTagName($name) {return $this->find($name, 0);}
    function getElementsByTagName($name, $idx=-1) {return $this->find($name, $idx);}
    function loadFile() {$args = func_get_args();$this->load(call_user_func_array('file_get_contents', $args), true);}
}
?>

代码示例:

<?php
/**
Version: 1.11 ($Rev: 175 $)
*/
//缓存时间，单位：秒
$t = 360;
if(!is_file('index.html')||(time()-filemtime('index.html'))>$t){
 //微博帐号
 $qq = 'kuaisubeian';
 //经过腾讯那个md5_3()加密后的密码
 $pwd = '624D3274815F2237817A7C62F42DD26A';
 $verifyURL = 'http://ptlogin2.qq.com/check?uin=@'.$qq.'&appid=46000101';
 $loginURL = 'http://ptlogin2.qq.com/login?';

 //获取验证码及第一次cookie
 $curl = curl_init($verifyURL);
 $cookie_jar = tempnam('.', 'cookie');
 curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_jar);
 $verifyCode = curl_exec($curl);
 curl_close($curl);
 $verifyCode = strtoupper()(substr($verifyCode, 18, 4));
 //echo '验证码：'.$verifyCode;
 //echo '<hr />';
 // echo 'Cookies：'.$cookie_jar;
 // echo '<hr />';

 //发送登录请求并获取第二次cookie
 $loginURL .= 'u=@'.$qq.'&p='.md5($pwd.$verifyCode).'&verifycode='.$verifyCode.'&aid=46000101&u1=http%3A%2F%2Ft.qq.com&h=1&from_ui=1&fp=loginerroralert';
 //echo '登录地址：'.$loginURL;
 //echo '<hr />';
 $curl = curl_init($loginURL);
 curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_jar);
 curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_jar);
 curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_jar);
 $loginResult = curl_exec($curl);
 curl_close($curl);
 //echo '登录验证结果：'.$loginResult;
 //echo '<hr />';
        http://www.
 //获取第三次cookie
 $curl = curl_init('http://t.qq.com');
 curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_jar);
 curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_jar);
 curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_jar);
 $loginResult = curl_exec($curl);
 curl_close($curl);

 //第四次
 $curl = curl_init('http://t.qq.com/'.$qq.'/mine');
 curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_jar);
 curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_jar);
 curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_jar);
 $loginResult = curl_exec($curl);
 curl_close($curl);

 unlink($cookie_jar);
 file_put_contents('index.html',$loginResult);
}
include('cnz.php');
$html = file_get_html('index.html');
$talkList = $html->find('#talkList');
$lastTalk = $talkList[0];

$userName = $lastTalk->children(0)->children(1)->find('.userName');
$msgCnt = $lastTalk->children(0)->children(1)->find('.msgCnt');
$pubInfo =  $lastTalk->children(0)->children(1)->find('.pubInfo');

$userName = $userName[0]->plaintext;

$result = '';

//大于二则是转播
if(count($msgCnt) < 10){
 $pi = $pubInfo[0]->find('.left');
 $result = $userName.$msgCnt[0]->plaintext.'<p > <span ></span></p>
<title>QQweiboQQ|www.beiantuan.com</title><meta http-equiv="content-type" content="text/html; charset=UTF-8" /><span >'.$pi[0]->children(0)->plaintext.' '.$pi[0]->children(1)->plaintext.'</span>';
}else{
 $pi = $pubInfo[1]->find('.left');
 $result = $userName.$msgCnt[0]->plaintext.'['.$msgCnt[1]->plaintext.'] <span >'.$pi[0]->plaintext.'</span>';
}
echo $result;
?>