webqq机器人实现

1.qq.class.php

<?php
set_time_limit(0);
ignore_user_abort(true);
require_once('./common.php');
require_once('./db.class.php');
define('IN_QQ',true);
 
class qqclient{
 
    private $setopt = array(
        'port'=>80,
        'host'=>'d.web2.qq.com',
        'userAgent'=>'Mozilla/5.0 (Windows NT 6.1; rv:10.0) Gecko/20100101 Firefox/10.0',
        'timeOut'=>16,
        'useCookie'=>true,
        'getmsg'=>'/channel/poll2',
        'putmsg'=>'',
        'uid'=>'',
        'pwd'=>'',
        'checkhost'=>'ptlogin2.qq.com',
        'runTime'=>300,
    );
 
    public function __set($property,$value){ 
        $this->$property = $value; 
        if($property == 'u')$this->setopt['uid'] = $this->u;
    } 
    public function __get($property){ 
        return $this->$property;
    } 
     
    function __construct($setopt=array()){
        $this->setopt = array_merge($this->setopt,$setopt);   
        if(@$setopt['uid'])$this->u = $setopt['uid'];
    }
     
    public function check($host = null , $url = null , $port = 80){
        $host = isset($host) ? $host : $this->setopt['checkhost'];
        $url = isset($url) ? $url : '/check?uin=' . $this->setopt['uid'] . '&appid=1003903&r='.rand();
        $port = $port ? $port : $this->setopt['port'];
        $this->check = $this->get( $host , $url , $port );
        return $this;
    }
     
    public function verify(){
        $out = $this->_parsmResult($this->body);
        $this->verify = array();
        $this->verify['state'] = $out[1][0]; 
        $this->verify['code'] = $out[1][1]; 
        return $this;
    }
     
    public function verifycode(){
        $t = $this->get('captcha.qq.com','/getimage?aid=1003903&r='. rand() .'&uin='. $this->setopt['uid'] .'&vc_type='.$this->setopt['code']);
        if($t){
            header('Content-Type: image/jpeg');
            echo $this->body;
        }
    }
     
    public function login(){
        $this->info = array();
        if(getCache('live'.$this->u,time()+86400)){
            $this->info['statusCode'] = '300';
            $this->info['message'] = 'QQ已经登录了!请勿反复登录';
        }else{
            $url  = "/login?u={$this->u}&p={$this->p}&verifycode={$this->v}&remember_uin=1&aid=1003903&u1=http%3A%2F%2Fweb2.qq.com%2";
            $url .= "Floginproxy.html%3Fstrong%3Dtrue&h=1&ptredirect=0&ptlang=2052&from_ui=1&pttype=1&dumy=&fp=loginerroralert";
            $this->setclientid()->get('ptlogin2.qq.com',$url);
            $msg = $this->_parsmResult($this->body);
            if($msg[1][0]==0){
                $this->loginqq();
            }else{
                $this->info['statusCode'] = '300';
                $this->info['message'] = $msg[1][count($msg[1])-1];
            }
        }
        return $this->info;
    }
     
    public function progress($host,$url,$port = 80){
        $this->get($host,$url,$port,'',true);
    }
     
    public function main(){
        $clientid = $this->getclientid();
        $psessionid = $this->getResult('psessionid');
        $data = array(
            'r'=>'{"clientid":"'.$clientid.'","psessionid":"'.$psessionid.'","key":0,"ids":[]}',
            'clientid'=>$clientid,
            'psessionid'=>$psessionid,
        );
        writeCache('live'.$this->u,time());
        $this->msgid = $this->generateCode(7);
        $this->rc = $this->generateCode(5);
        $time = time();
        while(true){
            $this->flushmsg();
            try{
                if(!getCache('live'.$this->u,time()+86400))exit;
                $msg = $this->post('d.web2.qq.com','/channel/poll2',80,$data);
                if($msg){
                    $header = split("\r\n\r\n",$msg);$this->header = $header[0];unset($header[0]);$msg = join('',$header); 
                    $msg = json_decode($msg);
                    if(@$msg->retcode == 0){
                        $this->putmsg($msg);
                    }elseif(@$msg->retcode == 103){
                        purgeCache('live'.$this->u);
                        exit;
                    }
                }
            }catch(Exception $e){
                 
            }
            if( (time() - $time ) > $this->setopt['runTime'] ){
                $this->progress($this->phost,$this->pmain,$this->pport);exit;}
        }   
    }
     
     
    private function putmsg($msg){
        $clientid = $this->getclientid();
        $psessionid = $this->getResult('psessionid');
        foreach($msg->result as $value){
            if($value->poll_type == 'message'){
                $this->msgid += 1;
                $from_uin = $value->value->from_uin;
                unset($value->value->content[0]);
                $sendmsg = $this->getKeyword(preg_replace("/\[.*?\]/si","",join('',$value->value->content)));
                $tmp["to"] = $from_uin;
                $tmp["face"] = 732;
                $tmp["content"] = '["'.addslashes($sendmsg).'",["font",{"name":"微软雅黑","size":"10","style":[0,0,0],"color":"000000"}]]';
                $tmp["msg_id"] = $this->msgid;
                $tmp["clientid"] = $clientid;
                $tmp["psessionid"] = $psessionid;
                 
                $data['r'] = json_encode($tmp);;
                $data['clientid'] = $clientid;
                $data['psessionid'] = $psessionid;
                 
                $e = $this->post('d.web2.qq.com','/channel/send_buddy_msg2',80,$data);
            }elseif($value->poll_type == 'kick_message'){
                purgeCache('live'.$this->u);
                exit;
            }
        }       
    }
     
    private function getKeyword($key){
        $key = trim($key);
        $db =   new mysql();
        $preg = array();
         
        if($key){
            if(preg_match_all("/^((\w+):?)([\w\W]*)/i",$key,$preg)){
                $query = $db->findOne('qqrobot_key','files,stype,cotents',"qq='{$this->u}' and keyword='".$preg[2][0]."'");               
            }else{
                $query = $db->findOne('qqrobot_key','files,stype,cotents',"qq='{$this->u}' and keyword='".addslashes($key)."'");
            }       
        }
         
        if(@$query){
            if(@$query['stype'] == 'normal')
                return $query['cotents'];
            else{
                if(is_file(dirname(__FILE__).'/plugin/'.$query['files'])){
                    try{
                        if(@$preg[1][0] == @$preg[2][0]){
                            return $query['cotents'];
                        }
                        require_once('./plugin/'.$query['files']);
                    }catch(Exception $e){
                         
                    }
                }
                if($query['cotents']) return $query['cotents'];
            }
        }
        $query = $db->findOne('qqrobot_key','files,stype,cotents',"qq='{$this->u}' and keyword='defalut'");
        return @$query['cotents'] ? $query['cotents']:"完了完了...我什么都不知道,怎么办呀!!  ~~~~(>_<)~~~~  ";
    }
     
    private function flushmsg(){
        $this->rc += 1;
        $this->get('web.qq.com','/get_msg_tip?uin=&tp=1&id=0&retype=1&rc='.$this->rc.'&lv=3&t='.time());
    }
     
    private function loginqq(){
         
        $cookie = $this->_getCookies();
        list($t,$ptwebqq) = split('=',$cookie['ptwebqq']);
        $clientid = $this->getclientid();
        $data= array(
            'r' => '{"status":"callme","ptwebqq":"'.$ptwebqq.'","passwd_sig":"","clientid":"'.$clientid.'","psessionid":""}',
            'clientid'=> $clientid,
            'psessionid' => null,
        );
         
        $data2 = "";
        $this->post('d.web2.qq.com','/channel/login2',80,$data);
        $body = json_decode($this->body);
        if($body->retcode == 0){
            writeCache('result'.$this->u,$body);
            $this->progress($this->phost,$this->pmain,$this->pport);
            $this->info['statusCode'] = '200';
            $this->info['message'] = '登录成功！';
            $this->info['callbackType'] = 'sucessCurrent';
        }else{
            $this->info['statusCode'] = '300';
            $this->info['message'] = '未知错误！';
        }
        return $this->info;
    }
     
    private function setclientid($uid = null){
        $uid = $uid ? $uid : $this->setopt['uid'];
        writeCache('clientid'.$uid,$this->generateCode(8));
        return $this;
    }
     
    private function getclientid($uid = null){
        $uid = $uid ? $uid : $this->setopt['uid'];
        return getCache('clientid'.$uid,time()+86400);
    }
     
    private function getResult($key){
        $data = getCache('result'.$this->u,time()+86400);    
        if($data && $data->result->$key){
                return $data->result->$key;
        }
        return null;
    }
     
    private function _parsmResult($text){
        if(!$text)return '';
        preg_match_all("/\'(.*?)\'/",$text,$out);
        return $out;
    }
     
    private function get($host,$url,$port = 80,$content=array(),$quick=false){
        return $this->_request('get',$host,$url,$port,$content,$quick);
    }
     
    private function post($host,$url,$port = 80,$content=array(),$quick=false){
        return $this->_request('post',$host,$url,$port,$content,$quick);
    }
     
    private function _request($type,$host,$url,$port = 80,$content=array(),$quick=false){
        $type = $type == 'get' ? 'GET' : 'POST';
        $port = $port ? $port : $this->setopt['port'];
        $content = $this->_parsmEncode($content);    
        $i = $this->generateCode('20000');   
        $fp[$i] = fsockopen($host, $port, $errno, $errstr); 
        if(!$fp[$i]){ 
            $this->errno = $errno ;
            $this->errstr = $errstr ;
            return false;
        } 
        fputs($fp[$i], "$type $url HTTP/1.0\r\n"); 
        fputs($fp[$i], "Host: $host\r\n"); 
        if($type == 'POST'){
            fputs($fp[$i], "Content-Type: application/x-www-form-urlencoded; charset=UTF-8\r\n"); 
            fputs($fp[$i], "Content-length: " . strlen($content) . "\r\n"); 
        }
        fputs($fp[$i], "Referer: http://d.web2.qq.com/proxy.html?v=20110331002&callback=2\r\n"); 
        fputs($fp[$i], "Accept-Language: zh-cn,zh;q=0.5\r\n"); 
        fputs($fp[$i], "Cookie: ".$this->getCookies()."\r\n"); 
        fputs($fp[$i], "User-Agent: " . $this->setopt['userAgent'] . "\r\n"); 
        fputs($fp[$i], "Connection: keep-alive\r\n\r\n"); 
        if($type == 'POST')fputs($fp[$i], "$content\\n");else fputs($fp[$i], "\\n");
        if($type == 'POST')
        stream_set_timeout($fp[$i],$this->setopt['timeOut']); 
        if(!$quick){
            $res = '';
            while (!feof($fp[$i])) 
                $res .= fgets($fp[$i], 128);
             
            $info=stream_get_meta_data($fp[$i]);
            fclose($fp[$i]); 
            if(!$info['timed_out']) 
            {         
                $header = split("\r\n\r\n",$res);
                $this->header = $header[0];
                unset($header[0]);
                $this->body = join('',$header); 
                $this->parseCookies();
            }else{
                $this->header = null;
                $this->body = null;              
            }
            return $res;
        }else{
            fclose($fp[$i]);
            return true;
        }
    }
     
    private function parseCookies(){
        $header = $this->header ? split("\r\n",$this->header) : array() ;
        $cookie = array();
        foreach($header as $val){
            if(preg_match("/^Set-Cookie/",$val)){
                $t = split('; ',str_replace("Set-Cookie: ","",$val));
                parse_str($t[0],$t);
                $t2 = array_keys($t);
                $cookie[$t2[0]] = $t2[0].'='.$t[$t2[0]];
            }
        }
        $cache = getCache($this->setopt['uid'],time()+850);
        $cache = $cache ? array_merge($cache , $cookie) : $cookie ;     
        writeCache($this->setopt['uid'],$cache);
        return true;
    }
     
    private function _getCookies(){
        return  getCache($this->setopt['uid'],time()+850);
    }
     
    private function getCookies(){
        $cookie = $this->_getCookies();
        return $this->cookies = $cookie ? join('; ',$cookie):'';
    }
     
    private function _parsmEncode($params,$isRetStr=true,$encode = false){
        if(!is_array($params))return $params;
        $result = $params;
        if($encode){
            foreach($params as $key=>$value){
                $value = urlencode($value);
                $result[$key] = $value;
            }
        }
        return $isRetStr ? http_build_query($result) : $result;
    }
     
    private function generateCode($length=6) {
        $chars = "0123456789";
        $code = "";
        while (strlen($code) < $length) {
            $code .= $chars[rand(0,strlen($chars)-1)];
        }
        return $code;
    }
 
}
?>

2.common.php

<?php
define('Root',dirname(__FILE__));
//公共函数
/**
 * safe_file_put_contents() 一次性完成打开文件，写入内容，关闭文件三项工作，并且确保写入时不会造成并发冲突
 *
 * @param string $filename
 * @param string $content
 * @param int $flag
 *
 * @return boolean
 */
function safe_file_put_contents($filename, & $content)
{
    $fp = fopen($filename, 'wb');
    if ($fp) {
        flock($fp, LOCK_EX);
        fwrite($fp, $content);
        flock($fp, LOCK_UN);
        fclose($fp);
        return true;
    } else {
        return false;
    }
}
 
if (!function_exists('file_put_contents'))
{
    function file_put_contents($filename, & $content)
    {
        return safe_file_put_contents($filename, $content);
    }
}
 
/**
 * safe_file_get_contents() 用共享锁模式打开文件并读取内容，可以避免在并发写入造成的读取不完整问题
 *
 * @param string $filename
 *
 * @return mixed
 */
    function safe_file_get_contents($filename)
    {
        $fp = fopen($filename, 'rb');
        if ($fp) {
            flock($fp, LOCK_SH);
            clearstatcache();
            $filesize = filesize($filename);
            if ($filesize > 0) {
                $data = fread($fp, $filesize);
            } else {
                $data = false;
            }
            flock($fp, LOCK_UN);
            fclose($fp);
            return $data;
        } else {
            return false;
        }
    }
/**
 * 创建一个目录树
 *
 * 用法：
 * <code>
 * mkdirs('/top/second/3rd');
 * </code>
 *
 * @param string $dir
 * @param int $mode
 */
    function mkdirs($dir, $mode = 0777)
    {
        if (!is_dir($dir)) {
            mkdirs(dirname($dir), $mode);
            return mkdir($dir, $mode);
        }
        return true;
    }
/**
 * 读取指定缓存的内容，如果缓存内容不存在或失效，则返回 false
 *
 * example:
 * <code>
 * $cacheId = 'my_cache_id';
 * if (!($data = FLEA::getCache($cacheId))) {
 *      $data = 'Data';
 *      FLEA::writeCache($cacheId, $data);
 * }
 * </code>
 *
 * 如果 $cacheIdIsFilename 参数为 true，则生成的缓存文件会以 $cacheId 参数作为文件名。
 * 基于安全原因，尽量不要将 $cacheIdIsFilename 参数设置为 true。
 *
 * $time 参数默认为缓存内容的有效期。其计算依据是以缓存文件的最后更新时间为准（也就是最后一次更新该缓存内容的时间）。
 *
 * 如果 $timeIsLifetime 为 false，则 $time 参数表示用于和缓存文件最更新时间进行比较的依据。
 * 如果 $time 指定的时间早于缓存文件的最后更新时间，则判断缓存内容为有效。
 *
 * @param string $cacheId 缓存ID，不同的缓存内容应该使用不同的ID
 * @param int $time 缓存过期时间或缓存生存周期
 * @param boolean $timeIsLifetime 指示 $time 参数的作用
 * @param boolean $cacheIdIsFilename 指示是否用 $cacheId 作为文件名
 *
 * @return mixed 返回缓存的内容，缓存不存在或失效则返回 false
 */
 
    function getCache($cacheId, $time = 900, $timeIsLifetime = true, $cacheIdIsFilename = false)
    {   $cacheDir =  Root.'/cache/'.substr(md5($cacheId),0,2).'/'.substr(md5($cacheId),1,2).'/';
        if(!is_dir($cacheDir)){
        mkdirs($cacheDir);}
        if (is_null($cacheDir)) {
            return false;
        }
 
        if ($cacheIdIsFilename) {
            $cacheFile = $cacheDir . '/' . preg_replace('/[^a-z0-9\-_]/i', '_', $cacheId) . '.php';
        } else {
            $cacheFile = $cacheDir . '/' . md5($cacheId) . '.php';
        }
        if (!file_exists($cacheFile)) { return false; }
 
        if ($timeIsLifetime && $time == -1) {
            $data = safe_file_get_contents($cacheFile);
            $hash = substr($data, 16, 32);
            $data = substr($data, 48);
            if (crc32($data) != $hash || strlen($hash) != 32) {
                return false;
            }
            return $data !== false ? unserialize($data) : false;
        }
 
        $filetime = filemtime($cacheFile);
        if ($timeIsLifetime) {
            if (time() >= $filetime + $time) { return false; }
        } else {
            if ($time >= $filetime) { return false; }
        }
        $data = safe_file_get_contents($cacheFile);
        $hash = substr($data, 16, 32);
        $data = substr($data, 48);
        if (crc32($data) != $hash || strlen($hash) != 32) {
            return false;
        }
        return $data !== false ? unserialize($data) : false;
    }
 
/**
 * 将变量内容写入缓存
 *
 * example:
 * <code>
 * $data = .....; // 要缓存的数据，可以是任何类型的值
 * // cache id 用于唯一指定一个缓存数据，以便稍后取出缓存数据
 * $cacheId = 'data_cahce_1';
 * FLEA::writeCache($cacheId, $data);
 * </code>
 *
 * @param string $cacheId
 * @param mixed $data
 * @param boolean $cacheIdIsFilename
 *
 * @return boolean
 */
    function writeCache($cacheId, $data, $cacheIdIsFilename = false)
    {
        $cacheDir = Root.'/cache/'.substr(md5($cacheId),0,2).'/'.substr(md5($cacheId),1,2).'/';
        if(!is_dir($cacheDir)){
        mkdirs($cacheDir);}
         
        if (is_null($cacheDir)) {
            return false;
        }
 
        if ($cacheIdIsFilename) {
            $cacheFile = $cacheDir . '/' . preg_replace('/[^a-z0-9\-_]/i', '_', $cacheId) . '.php';
        } else {
            $cacheFile = $cacheDir . '/' . md5($cacheId) . '.php';
        }
 
        $data = serialize($data);
        $prefix = '<?php die(); ?> ';
        $hash = sprintf('% 32d', crc32($data));
        $data = $prefix . $hash . $data;
 
        if (!safe_file_put_contents($cacheFile, $data)) {
            return false;
        } else {
            return true;
        }
    }
/**
 * 删除指定的缓存内容
 *
 * @param string $cacheId
 * @param boolean $cacheIdIsFilename
 *
 * @return boolean
 */
    function purgeCache($cacheId, $cacheIdIsFilename = false)
    {
        $cacheDir = Root.'/cache/'.substr(md5($cacheId),0,2).'/'.substr(md5($cacheId),1,2).'/';
        if(!is_dir($cacheDir)){
        mkdirs($cacheDir);}
 
        if (is_null($cacheDir)) {
            return false;
        }
 
        if ($cacheIdIsFilename) {
            $cacheFile = $cacheDir . '/' . preg_replace('/[^a-z0-9\-_]/i', '_', $cacheId) . '.php';
        } else {
            $cacheFile = $cacheDir . '/' . md5($cacheId). '.php';
        }
 
        if (file_exists($cacheFile)) {
            return unlink($cacheFile);
        }
        return true;
    }
?>

3.db.class.php

<?php
define('db_host','数据库服务器'); //数据库服务器  
define('db_user','roto');      //数据库用户名  
define('dbpw','ubkkE');    //数据库密码  
define('dbname','snet');  //数据库名  
define('dbcharset','utf8');    //数据库编码,不建议修改  
   
   
class mysql {  
       
    var $querynum = 0;        
    var $link;  
    var $sql;
       
    private $dbhost = db_host;  
    private $dbname = dbname;  
    private $dbuser = db_user;  
    private $dbpw = dbpw;  
    private $dbcharset = dbcharset;  
    
       
    function mysql($dbhost='', $dbuser='', $dbpw='', $dbname = '', $pconnect = 0) {  
    
        $dbhost==''?$dbhost=$this->dbhost:$dbhost;  
        $dbuser==''?$dbuser=$this->dbuser:$dbuser;  
        $dbpw==''?$dbpw=$this->dbpw:$dbpw;  
        $dbname==''?$dbname=$this->dbname:$dbname;  
    
        if($pconnect) {  
            if(!$this->link = @mysql_pconnect($dbhost, $dbuser, $dbpw)) {  
                $this->halt('Can not connect to MySQL server');  
            }  
        } else {  
            if(!$this->link = @mysql_connect($dbhost, $dbuser, $dbpw)) {  
                $this->halt('Can not connect to MySQL server');  
            }  
        }  
        if($this->version() > '4.1') {  
            if($this->dbcharset) {  
                mysql_query("SET character_set_connection=$this->dbcharset, character_set_results=$this->dbcharset, character_set_client=binary", $this->link);  
            }  
    
            if($this->version() > '5.0.1') {  
                mysql_query("SET sql_mode=''", $this->link);  
            }  
        }  
    
        if($dbname) {  
            mysql_select_db($dbname, $this->link);  
        }  
    
    }  
       
    function select_db($dbname) {  
        return mysql_select_db($dbname, $this->link);  
    }  
       
    function fetch_array($query, $result_type = MYSQL_ASSOC) {  
        return mysql_fetch_array($query, $result_type);  
    }  
    
       
    function fetch_all($query, $result_type = MYSQL_ASSOC) {  
        $result = array();  
        $num = 0;  
    
        while($ret = mysql_fetch_array($query, $result_type))  
        {  
            $result[$num++] = $ret;  
        }  
        return $result;  
    
    }  
    
       
    function fetch_row($query) {  
        $query = mysql_fetch_row($query);  
        return $query;  
    }  
    
       
    function result($query, $row) {  
        $query = @mysql_result($query, $row);  
        return $query;  
    }  
    
    
       
    function query($sql, $type = '') {  
    
        $func = $type == 'UNBUFFERED' && @function_exists('mysql_unbuffered_query') ?  
            'mysql_unbuffered_query' : 'mysql_query';  
        if(!($query = $func($sql, $this->link)) && $type != 'SILENT') {  
            $this->halt('MySQL Query Error: ', $sql);  
        }  
    
        $this->querynum++;  
        return $query;  
    }  
     
    function insert($table,$row){
        if(!$row)return null;
        $row = $this->_escape($row);
        $tmp = $tmp2 = array();
        foreach($row as $key => $val){
            $tmp[] = $key;
            $tmp2[] = $val;
        }
        $sql = "insert into $table (".join(',',$tmp).") values ('".join('\',\'',$tmp2)."')";
        return $this->query($sql);
    }
     
    function update($table,$row,$where= null){
        if(!$row || !$table)return null;
         
        $row = $this->_escape($row);
        $tmp = array();
        foreach($row as $key => $val){
            $tmp[] = $key."='$val'";
        }
        $sql = "update $table set ".join(',',$tmp)."";
        $sql = $where ? $sql.' where '.$where:$sql;
        return $this->query($sql);
    }
     
    function find($table,$field = '*',$where=null){
        if(!$table) return null;
        $sql = $this->bulidsql($table,$field,$where);
        $query = $this->query($sql);
        $data = null;
        while($row = $this->fech($query))
            $data[] = $row;         
        return $data;
    }
     
    function findOne($table,$field = '*',$where=null){
        if(!$table) return null;
        $sql = $this->bulidsql($table,$field,$where);
        return $this->fech($this->query($sql));
    }
     
    function bulidsql($table,$field = '*',$where=null){
        $sql = 'select '.$field.' from '.$table;
        $sql = $where ? $sql.' where '.$where:$sql;
        $this->sql = $sql;
        return $sql;
    }
     
    function fech($query,$type = MYSQL_ASSOC){
        return mysql_fetch_array($query, $type);
    }
     
    function _escape($row){
        if(is_array($row)){
            foreach($row as $key => $val){
                $row[$key] = addslashes($val);
            }
        }
        return $row;
    }
     
    function affected_rows() {  
        return mysql_affected_rows($this->link);  
    }  
       
    function error() {  
        return (($this->link) ? mysql_error($this->link) : mysql_error());  
    }  
       
    function errno() {  
        return intval(($this->link) ? mysql_errno($this->link) : mysql_errno());  
    }  
    
       
    function num_rows($query) {  
        $query = mysql_num_rows($query);  
        return $query;  
    }  
       
    function num_fields($query) {  
        return mysql_num_fields($query);  
    }  
       
    function free_result($query) {  
        return mysql_free_result($query);  
    }  
       
    function insert_id() {  
        return ($id = mysql_insert_id($this->link)) >= 0 ? $id : $this->result($this->query("SELECT last_insert_id()"), 0);  
    }  
    
       
    function fetch_fields($query) {  
        return mysql_fetch_field($query);  
    }  
       
    function version() {  
        return mysql_get_server_info($this->link);  
    }  
       
    function close() {  
        return mysql_close($this->link);  
    }  
       
    function halt($message = '', $sql = '') {  
        echo $message . ' ' . $sql;  
        exit;  
    
    }  
}  
?>