php实现计数器功能

<?php
/**
 *
 *  计数器(v1.1.0)
 *
 *  Version : 1.1.0
 *  Author  : 村长
 *  PHP     : >4.3
 *  
 */
class Counter
{
    var $CountFolder;
    var $countType;
    var $showtype;
    var $imgArray;

    function Counter()
    {
        $this->countType = 0;
        $this->showtype = "GetCountByDay";
        $this->imgArray = array();
        $this->MakeCounter();
    }

    function MakeCounter()
    {
        $this->CountFolder = "log/".date("Ymd");
        if(!is_dir($this->CountFolder))
        {
            mkdir($this->CountFolder,0777);
        }
        $this->_DoCount();
    }

    //Save data file
    function _DoCount()
    {
        $file = date("Ymd").ip2long($_SERVER['REMOTE_ADDR']).".txt";
        if(!file_exists($this->CountFolder."/".$file))
        {
            $fp = @fopen($this->CountFolder."/".$file,"wb+");
            //这里可以保存其他需要的日志记录
            @fputs($fp,$_SERVER['REMOTE_ADDR']);
            @fclose($fp);
        }
    }

    //获得指定时间的统计数据
    //默认为1天 0 为取所有
    function GetCountByDay($day=1)
    {
        //今日的时间戳
        $today = strtotime(date("Y-m-d"));
        $all = 0;
        for($i=$day;$i>=0;$i--)
        {
            $tsp = $today-(86400*$i);
            $folder = "log/".date("Ymd",$tsp)."/*.txt";
            $ta = glob("$folder");
            $all= $all+ count($ta);
        }
        return $all;
    }

    function GetCountUseImg($day=1)    
    {
        $allnumber = $this->GetCountByDay($day);
        for($i=0;$i<strlen($allnumber);$i++)
        {
            $idx = substr($allnumber,$i,1);
            $returnVal.= sprintf("<img src=\"%s\">",$this->imgArray[$idx]);
        }
        return $returnVal;
    }    

    function SetStyle($style='',$ext="gif")
    {
        $imgprefix ="img/";
        $folder = $imgprefix.$style;
        foreach(range(0,9) as $num)
        {
            $this->imgArray[$num] = $folder."/".$num.".$ext";
        }
        if(is_dir($folder))
        {
            $this->showtype = "GetCountUseImg";
        }
        else 
        {
            $this->showtype = "GetCountByDay";
        }
    }
    
    function Show($day=0)
    {
        return $this->{$this->showtype}($day);
    }
}

//实例计数器对象
$counter = new Counter();

//采用 sports98 样式显示，告知默认扩展名为png格式
$counter->SetStyle("sports98","png");
echo "<br />今日访问：".$counter->Show(0);

//采用S1样式显示,默认扩展名为 gif
$counter->SetStyle("s1");
echo "<br />近3日访问：".$counter->Show(2);

//----只显示文字的计数器
$counter->SetStyle("-");
echo "<br />近3日访问：".$counter->Show(2);
?>

<?php
/*
－－－－－－－－－－－－－－－－－－－－－－－－－－
Copyright by T.muqiao(39号天堂桥)
本程序仅供学习讨论使用,在未通知作者作为任何商业用途
         视为中华人民共和国不道德公民
联系方式:442536278@qq.com
－－－－－－－－－－－－－－－－－－－－－－－－－*/
if(!defined('IN_SELF')){
 header('HTTP/1.1 404 NOT Found');
 exit;
}
class ZipAllFloder{//压缩文件夹
   
 var $datasec      = array();
 var $ctrl_dir     = array();
 var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
 var $old_offset   = 0;
 var $dirs         = array(".","");
 var $dirlen       = 0;
   
 function IniVars(){//初始化变量
        $this -> datasec      = array();
        $this -> ctrl_dir     = array();
        $this -> eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
        $this -> old_offset   = 0;
        $this -> dirs         = array(".","");
  $this -> dirlen       = 0;
    }
   
 function ZipFolder($dir,$zipfilename){//压缩一个文件夹
        if(substr($dir,-1)!="/"){
   $dir .= "/";
  }
  $this -> dirlen = strlen($dir);
        $this -> AddFolderContent($dir);
        $out = $this -> get_file();
        $this -> IniVars();
        $fp = fopen($zipfilename,"w"); 
        fwrite($fp,$out,strlen($out)); 
        fclose($fp);
    }
   
    function AddFolderContent($dir){//添加文件夹中文件内容
        if(is_dir($dir)){
   $folder = substr($dir,$this ->dirlen);
            if(!in_array($folder,$this->dirs)){
                $this->add_Dir($folder);
            }
            $handle = opendir($dir);
            while($files = readdir($handle)){
                if (($files==".")||($files=="..")) continue;
                if(is_dir($dir.$files)){
                    $this->AddFolderContent($dir.$files."/");
                }else{
                    $fp = fopen ($dir.$files,"r");
                    $content = @fread ($fp,filesize($dir.$files)); 
                    fclose ($fp); 
                    $this->add_File($content,$folder.$files);
                }
            } 
            closedir($handle);
        }
    }
 function get_file(){//获得压缩文件数据
        $data = implode('', $this -> datasec);
        $ctrldir = implode('', $this -> ctrl_dir);
        return $data . $ctrldir . $this -> eof_ctrl_dir .
        pack('v', sizeof($this -> ctrl_dir)).pack('v', sizeof($this -> ctrl_dir)).
        pack('V', strlen($ctrldir)) . pack('V', strlen($data)) . "\x00\x00";
    }
   
    function add_dir($name){
        $name   = str_replace("\\", "/", $name);
        $fr     = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
        $fr    .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
        $fr    .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0);
        $this -> datasec[] = $fr;
        $new_offset = strlen(implode("", $this->datasec));
        $cdrec = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
        $cdrec .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
        $cdrec .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );
        $ext = "\xff\xff\xff\xff";
        $cdrec .= pack("V", 16 ).pack("V", $this -> old_offset ).$name;
        $this -> ctrl_dir[] = $cdrec;
        $this -> old_offset = $new_offset;
        $this -> dirs[] = $name;
    }
   
    function add_File($data, $name, $compact = 1){
        $name     = str_replace('\\', '/', $name);
        $dtime    = dechex($this->DosTime());
        $hexdtime = '\x' . $dtime[6] . $dtime[7].'\x'.$dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3].'\x'.$dtime[0].$dtime[1];
        eval('$hexdtime = "' . $hexdtime . '";');
        if($compact){
            $fr = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00".$hexdtime;
        }else{
            $fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00".$hexdtime;
        }
        $unc_len = strlen($data); $crc = crc32($data);
        if($compact){
            $zdata = gzcompress($data); $c_len = strlen($zdata);
            $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
        }else{
            $zdata = $data;
        }
        $c_len=strlen($zdata);
        $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
        $fr .= pack('v', strlen($name)).pack('v', 0).$name.$zdata;
        $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
        $this -> datasec[] = $fr;
        $new_offset        = strlen(implode('', $this->datasec));
        if($compact){
            $cdrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00";
        }else{
            $cdrec = "\x50\x4b\x01\x02\x14\x00\x0a\x00\x00\x00\x00\x00";
        }
        $cdrec .= $hexdtime.pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
        $cdrec .= pack('v', strlen($name) ).pack('v', 0 ).pack('v', 0 );
        $cdrec .= pack('v', 0 ).pack('v', 0 ).pack('V', 32 );
        $cdrec .= pack('V', $this -> old_offset );
        $this -> old_offset = $new_offset;
        $cdrec .= $name;
        $this -> ctrl_dir[] = $cdrec;
        return true;
    }
   
    function DosTime() {
        $timearray = getdate();
        if ($timearray['year'] < 1980) {
            $timearray['year'] = 1980; $timearray['mon'] = 1;
            $timearray['mday'] = 1; $timearray['hours'] = 0;
            $timearray['minutes'] = 0; $timearray['seconds'] = 0;
        }
        return (($timearray['year']-1980)<<25)|($timearray['mon']<<21)|($timearray['mday']<<16)|($timearray['hours']<<11)|($timearray['minutes']<<5)|($timearray['seconds']>>1);
    }
}

class UnCompress{
 function get_List($zip_name){
  $zip   = @fopen($zip_name, 'rb');
  if(!$zip) return(0);
  $centd = $this->ReadCentralDir($zip,$zip_name);
  @rewind($zip);
  @fseek($zip, $centd['offset']);
  for ($i=0; $i<$centd['entries']; $i++){
   $header                  = $this->ReadCentralFileHeaders($zip);
   $header['index']         = $i;
   $info['filename']        = $header['filename'];
   $info['stored_filename'] = $header['stored_filename'];
   $info['size']            = $header['size'];
   $info['compressed_size'] = $header['compressed_size'];
   $info['crc']             = strtoupper(dechex( $header['crc'] ));
   $info['mtime']           = $header['mtime'];
   $info['comment']         = $header['comment'];
   $info['folder']          = ($header['external']==0x41FF0010||$header['external']==16)?1:0;
   $info['index']           = $header['index'];$info['status'] = $header['status'];
   $ret[]                   = $info;
   unset($header);
  }
  return $ret;
 }
 
 function Extract($zn,$to,$index = array(-1) ){
  $ok = 0;
  $zip = @fopen($zn,'rb');
  if(!$zip){
   return(-1);
  }
  $cdir = $this->ReadCentralDir($zip,$zn);
  $pos_entry = $cdir['offset'];
  if(!is_array($index)){
   $index = array($index); 
  }
  for($i=0; $index[$i];$i++){
   if(intval($index[$i])!=$index[$i]||$index[$i]>$cdir['entries']){
    return(-1);
   }
  }
  for ($i=0; $i<$cdir['entries']; $i++){
   @fseek($zip, $pos_entry);
   $header = $this->ReadCentralFileHeaders($zip);
   $header['index'] = $i; $pos_entry = ftell($zip);
   @rewind($zip); fseek($zip, $header['offset']);
   if(in_array("-1",$index)||in_array($i,$index)){
    $stat[$header['filename']]=$this->ExtractFile($header, $to, $zip);
   }
  }
  fclose($zip);
  return $stat;
 }
 
 function ReadFileHeader($zip){
  $binary_data = fread($zip, 30);
  $data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);
  $header['filename'] = fread($zip, $data['filename_len']);
  if ($data['extra_len'] != 0) {
   $header['extra'] = fread($zip, $data['extra_len']);
  }else{
   $header['extra'] = '';
  }
  $header['compression'] = $data['compression'];$header['size'] = $data['size'];
  $header['compressed_size'] = $data['compressed_size'];
  $header['crc'] = $data['crc']; $header['flag'] = $data['flag'];
  $header['mdate'] = $data['mdate'];$header['mtime'] = $data['mtime'];
  if ($header['mdate'] && $header['mtime']){
   $hour=($header['mtime']&0xF800)>>11;$minute=($header['mtime']&0x07E0)>>5;
   $seconde=($header['mtime']&0x001F)*2;$year=(($header['mdate']&0xFE00)>>9)+1980;
   $month=($header['mdate']&0x01E0)>>5;$day=$header['mdate']&0x001F;
   $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
  }else{
   $header['mtime'] = time();
  }
  $header['stored_filename'] = $header['filename'];
  $header['status'] = "ok";
  return $header;
 }
 
 function ReadCentralFileHeaders($zip){
  $binary_data = fread($zip, 46);
  $header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);
  if ($header['filename_len'] != 0){
   $header['filename'] = fread($zip,$header['filename_len']);
  }else{
   $header['filename'] = '';
  }
  if ($header['extra_len'] != 0){
   $header['extra'] = fread($zip, $header['extra_len']);
  }else{
   $header['extra'] = '';
  }
  if ($header['comment_len'] != 0){
   $header['comment'] = fread($zip, $header['comment_len']);
  }else {
   $header['comment'] = '';
  }
  if ($header['mdate'] && $header['mtime']){
   $hour = ($header['mtime'] & 0xF800) >> 11;
   $minute = ($header['mtime'] & 0x07E0) >> 5;
   $seconde = ($header['mtime'] & 0x001F)*2;
   $year = (($header['mdate'] & 0xFE00) >> 9) + 1980;
   $month = ($header['mdate'] & 0x01E0) >> 5;
   $day = $header['mdate'] & 0x001F;
   $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
  }else{
   $header['mtime'] = time();
  }
  $header['stored_filename'] = $header['filename'];
  $header['status'] = 'ok';
  if (substr($header['filename'], -1) == '/'){
   $header['external'] = 0x41FF0010;
  }
  return $header;
 }
 
 function ReadCentralDir($zip,$zip_name){
  $size = filesize($zip_name);
  if ($size < 277){
   $maximum_size = $size;
  }else{
   $maximum_size=277;
  }
  @fseek($zip, $size-$maximum_size);
  $pos = ftell($zip);
  $bytes = 0x00000000;
  while ($pos < $size){
   $byte = @fread($zip, 1); $bytes=($bytes << 8) | Ord($byte);
   if ($bytes == 0x504b0506){
    $pos++;
    break;
   }
   $pos++;
  }
  $data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size',
  fread($zip, 18));
  if ($data['comment_size'] != 0){
   $centd['comment'] = fread($zip, $data['comment_size']);
  }else{
   $centd['comment'] = ''; $centd['entries'] = $data['entries'];
  }
  $centd['disk_entries'] = $data['disk_entries'];
  $centd['offset'] = $data['offset'];$centd['disk_start'] = $data['disk_start'];
  $centd['size'] = $data['size'];  $centd['disk'] = $data['disk'];
  return $centd;
 }
 
 function ExtractFile($header,$to,$zip){
  $header = $this->readfileheader($zip);
  if(substr($to,-1)!="/"){
   $to.="/";
  }
  if(!@is_dir($to)){
   @mkdir($to,0777);
  }
  $pth = explode("/",dirname($header['filename']));
  for($i=0;isset($pth[$i]);$i++){
   if(!$pth[$i]){
    continue;
   }
   if(!is_dir($to.$pth[$i])){
    @mkdir($to.$pth[$i],0777);
   }
  }
  if (!($header['external']==0x41FF0010)&&!($header['external']==16)){
   if ($header['compression']==0){
    $fp = @fopen($to.$header['filename'], 'wb');
    if(!$fp){
     return(-1);
    }
    $size = $header['compressed_size'];
    while ($size != 0){
     $read_size = ($size < 2048 ? $size : 2048);
     $buffer = fread($zip, $read_size);
     $binary_data = pack('a'.$read_size, $buffer);
     @fwrite($fp, $binary_data, $read_size);
     $size -= $read_size;
    }
    fclose($fp);
    touch($to.$header['filename'], $header['mtime']);
   }else{
    $fp = @fopen($to.$header['filename'].'.gz','wb');
    if(!$fp){
     return(-1);
    }
    $binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']),
    Chr(0x00), time(), Chr(0x00), Chr(3));
    fwrite($fp, $binary_data, 10);
    $size = $header['compressed_size'];
    while ($size != 0){
     $read_size = ($size < 1024 ? $size : 1024);
     $buffer = fread($zip, $read_size);
     $binary_data = pack('a'.$read_size, $buffer);
     @fwrite($fp, $binary_data, $read_size);
     $size -= $read_size;
    }
    $binary_data = pack('VV', $header['crc'], $header['size']);
    fwrite($fp, $binary_data,8); fclose($fp);
    $gzp = @gzopen($to.$header['filename'].'.gz','rb') or die("Cette archive est compress");
    if(!$gzp){
     return(-2);
    }
    $fp = @fopen($to.$header['filename'],'wb');
    if(!$fp){
     return(-1);
    }
    $size = $header['size'];
    while ($size != 0){
     $read_size = ($size < 2048 ? $size : 2048);
     $buffer = gzread($gzp, $read_size);
     $binary_data = pack('a'.$read_size, $buffer);
     @fwrite($fp, $binary_data, $read_size);
     $size -= $read_size;
    }
    fclose($fp); gzclose($gzp);
    touch($to.$header['filename'], $header['mtime']);
    @unlink($to.$header['filename'].'.gz');
   }
  }
  return true;
 }
}

class StatFolder{//统计文件夹内容
 var $Num       = 0;
 var $Size      = 0;
 var $TypeNum   = 0;
 var $FolderNum = 0;
 var $Type      = array();
 function __construct($folder){
  $this -> ReadFolder($folder);
 }
 function StatFolder($folder){
  $this -> ReadFolder($folder);
 }
 function ReadFolder($folder){
  if(is_dir($folder)){
   $handle = opendir($folder);
            while($files = readdir($handle)){
                if (($files==".")||($files=="..")) continue;
                if(is_dir($folder."/".$files)){
     $this ->FolderNum++;
                    $this ->ReadFolder($folder."/".$files);
                }else{
     $this ->Num++;
     $type = fileext($files);
     if(!in_array($type,$this ->Type)){
      $this ->Type[] = $type;
      $this ->TypeNum++;
     }
                    $size = filesize($folder."/".$files); 
                    $this->Size +=$size;
     clearstatcache();
                }
            } 
            closedir($handle);
        }
 }
 function GetFileNum(){
  return $this -> Num;
 }
 function GetTotalSize(){
  $switch = $this->Size/1024;
  if($switch<1024){
   $return = explode(".",$switch);
   if($return[0]==0){
    return $this->Size."　bytes";
   }
   return $return[0].".".substr($return[1],0,3)."　Kbytes";
  }else{
   $switch /=1024;
   $return = explode(".",$switch);
   return $return[0].".".substr($return[1],0,3)."　Mbytes";
  }
 }
 function GetTypeNum(){
  return $this -> TypeNum;
 }
 function GetFolderNum(){
  return $this -> FolderNum;
 }
}

function matchpath($reference,$testpath){//检查$testpath是否数学上的属于$reference参照路径
 $reference = explode("/",$reference);
 $testpath  = explode("/",$testpath);
 $num1 = count($reference);
 $num2 = count($testpath);
 if($num1 < $num2){
  return false;
 }
 $degree = 0;
 for($i=0;$i<$num2;$i++){
  if(strtolower($testpath[$i])==strtolower($reference[$i])){
   $degree++;
   continue;
  }else{
   return false;
   break;
  }
 }
 if($degree==$num2){
  return true;
 }
}

function checkcore($path){//检查核心文件是否包含其中
 global $T_corefile;
 for($i=0;$p=$T_corefile[$i];$i++){
  if(matchpath($p,$path)){
   return true;
   break;
  }
 }
}

function copypath($source,$target,$uncover=true){//拷贝整个目录   默认不允许覆盖
 global $T_lang;
 if(is_dir($target)){
  if($uncover){
   $errors .= str_replace("--replace--",$target,$T_lang['func'][0]);
   $gocover = false;
  }else{
   $gocover = true;
  }
 }else{
  if(matchpath($target,$source)){//检测目录$source是否包含于$target
   $errors .= str_replace("--replace--",$source,$T_lang['func'][1]);
   $gocover = false;
  }else{
   if(@mkdir($target,0777)){
    $gocover = true;
   }else{
    $errors .= str_replace("--replace--",$target,$T_lang['func'][2]);
    $gocover = false;
   }
  }
 }
 if($gocover){
  $handle = opendir($source);
  while($file = readdir($handle)){
   clearstatcache();
   if(substr($file,-1)=="."||substr($file,-2)=="..") continue;
   if(is_dir($source."/".$file)){
    $errors .= copypath($source."/".$file,$target."/".$file,$uncover);
   }else{
    $gocopy = true;
    if(file_exists($target."/".$file)){
     if($uncover){
      $gocopy = false;
     }else{
      if(@unlink($target."/".$file)){
       $gocopy = true;
      }else{
       $gocopy = false;
      }
     }
    }
    if($gocopy){
     if(@copy($source."/".$file,$target."/".$file)){
      $errors .= "";
     }else{
      $errors .= str_replace("--replace--",$source."/".$file,$T_lang['func'][3]);
     }
    }else{
     $errors .= str_replace("--replace--",$target."/".$file,$T_lang['func'][4]);
    }
   }
  }
  closedir($handle);
 }
 if($errors){
  return $errors;
 }else{
  return "";
 }
}

function movepath($source,$target,$uncover=true){//移动整个目录  默认不允许覆盖
 global $T_lang;
 if(is_dir($target)){
  if($uncover){
   $errors .= str_replace("--replace--",$target,$T_lang['func'][0]);
   $gocover = false;
  }else{
   $gocover = true;
  }
 }else{
  if(matchpath($target,$source)){//检测目录$source是否包含于$target
   $errors .= str_replace("--replace--",$source,$T_lang['func'][5]);
   $gocover = false;
  }else{
   if(@mkdir($target,0777)){
    $gocover = true;
   }else{
    $errors .= str_replace("--replace--",$target,$T_lang['func'][2]);
    $gocover = false;
   }
  }
 }
 if($gocover){
  $handle = opendir($source);
  while($file = readdir($handle)){
   clearstatcache();
   if(substr($file,-1)=="."||substr($file,-2)=="..") continue;
   if(!is_dir($source."/".$file)){
    $gocopy = true;
    if(file_exists($target."/".$file)){
     if($uncover){
      $gocopy = false;
     }else{
      $gocopy = true;
     }
    }
    if($gocopy){
     if(@copy($source."/".$file,$target."/".$file)){
      unlink($source."/".$file);
     }else{
      $errors .= str_replace("--replace--",$source."/".$file,$T_lang['func'][3]);
     }
    }else{
     $errors .= str_replace("--replace--",$target."/".$file,$T_lang['func'][6]);
    }
   }else{
    $errors .= movepath($source."/".$file,$target."/".$file,$uncover);
   }
  }
  closedir($handle);
 }
 if($errors){
  return $errors;
 }else{
  if(@rmdir($source."/".$file)){
   return "";
  }else{
   $errors .= str_replace("--replace--",$source,$T_lang['func'][7]);
  }
 }
}

function delpath($source){//删除整个目录
 global $T_lang,$T_Recycled;
 $handle = opendir($source);
 while($file = readdir($handle)){
  clearstatcache();
  if(substr($file,-1)=="."||substr($file,-2)=="..") continue;
  if(is_dir($source."/".$file)){
   $errors .= delpath($source."/".$file);
  }else{
   if(@unlink($source."/".$file)){
   }else{
    $errors .= str_replace("--replace--",$source,$T_lang['func'][7]);
   }   
  }
 }
 closedir($handle);
 if($errors){
  $errors .= str_replace("--replace--",$source,$T_lang['func'][8]);
  return $errors;
 }else{
  if($source==$T_Recycled){//清空回收站时 这个判断条件用的上
   return "";
  }else{
   if(@rmdir($source)){
    return "";
   }else{
    $errors .= str_replace("--replace--",$source,$T_lang['func'][8]);
    return $errors;
   }  
  }
 }
}

function limitname($title,$limitlength =13){//限制标题长度
 $length = strlen($title);
 if($length>$limitlength){
  $gbk = 0;
  for($i=0;$i<$limitlength-1;$i++){
   $temp = substr($title,$i,1);
   if(ord($temp)>127) $gbk +=1;
  }
  if($gbk%2){
   $title = substr($title,0,$limitlength)."...";
  }else{
   $title = substr($title,0,$limitlength-1)."...";
  }
 }
 return $title;
}

function fileext($filename){
 return trim(substr(strrchr($filename, '.'), 1));
}

function checkpath($path){//检查path合法和合格性
 $path = eregi_replace("root",".",$path);
 if($path=="."||ereg("^(\.\/).*[^\.\/]$",$path)){
  if(eregi("\.\/(.*)?(\.\.\/)+.",$path)){
   return false;
  }else{
   if(is_dir($path)){
    return $path;
   }else{
    return false;
   }
  }
 }else{
  return false;
 }
}

function historypath(){//历史路径
 global $path,$T_rlength,$T_images,$T_main,$T_Recycled;
 $ruote = explode("/",$path);
 $num   = count($ruote);
 if($num<=1){
  return false;
 }else{
  if($num-1>$T_rlength){
   $i = $num-$T_rlength;
  }else{
   $i = 1;
  }
     for(;$i<=$num-1;$i++){
   $rs .= "<img src={$T_images}/direct.gif align=absmiddle><a href=\"{$T_main}?path=";
   $single = ".";
   for($j=1;$j<=$i;$j++){
    $single .= "/".$ruote[$j];
   }
   $rs .= urlencode($single)."\"><img src=\"";
   if($single==$T_Recycled){
    $rs .= $T_images."/Recycled.gif";
   }else{
    $rs .= $T_images."/folder.gif";
   }
   $rs .= "\" height=\"50\" width=\"50\" align=absmiddle>".limitname($ruote[$i])."</a>";
  }
  return $rs;
 }
}
?>

#*********************************************************
#文件名称: function.php
#功能描述: 新闻添加修改处理模块
#程序制作：留印(adleyliu)
#联系qq  ：14339095
#联系邮箱：[email=adleyliu@163.com]adleyliu@163.com[/email]
#官方网站: [url=http://www.115000.com.cn]http://www.115000.com.cn[/url]
#copyright (c) 2007-2008 115000.com.cn all rights reserved.
#最后更新:     2007-11-20
#*********************************************************


#*********************************************************
#分页函数
#*********************************************************
function yl_list_page($pageurl,$rsnum,$pages,$pagecount,$pagesize){
#url
#总记录
#总页数
#当前页码
#每页显示数
   //$pageurl='?';
   $pcount = $pages;
   $page_info = '<div class=pagenum>';
   $page_info .= '<div class=num>'; 
   if (($pcount > 1) && ($pcount == $pagecount) ){
       $page_info .= '<a href = '.$pageurl.'page='.intval($pagecount-1).'>上一页</a>';
   }elseif (($pagecount != 1) && ($pcount != $pagecount)){
      $page_info .= '<a href = '.$pageurl.'page='.intval($pagecount-1).'>上一页</a>';
   }
      $page_info .= '<a href = '.$pageurl.'page=1>页首</a>';
   if ($pagecount > 4){
     $page_info .= '<a href = '.$pageurl.'page=1>[1]</a><span class=dot>...</span>';
   }
   if ($pcount > $pagecount+2){
       $endpage = $pagecount+2;
   }else{
     $endpage = $pcount;
   }
   for ($n = ($pagecount-2); $n <= $endpage; $n++){
      if (!($n < 1)){
         if ($n == intval($pagecount)){
         $page_info .= '<span class=normal>'.$n.'</span>';
     }else{
        $page_info .= '<a href = '.$pageurl.'page='.$n.'>['.$n.']</a>';
     }
      }
   }
   if ($pagecount+2 < $pcount){
       $page_info .= '<span class=dot>...</span><a href='.$pageurl.'page='.$pcount.'>['.$pcount.']</a>';
   }
       $page_info .= '<a href = '.$pageurl.'page='.$pcount.'>页尾</a>';
   if (($pagecount == 1) && ($pcount != $pagecount) && ($pcount != 0)){
       $page_info .= '<a href = '.$pageurl.'page='.intval($pagecount + 1).'>下一页</a>';
   }else if (($pagecount != 1) && ($pcount != $pagecount)){
       $page_info .= '<a href = '.$pageurl.'page='.intval($pagecount + 1).'>下一页</a>';
   }
       $page_info .= '</div></div>';
   $page_info .= '<div class=pagenum>';
   $page_info .= '<div class=num><span class=normal> 共：'.$rsnum .'条/'.$pcount.'页 每页/'.$pagesize.'条</span></div>';
   $page_info .= ' <div class=num>';
   //echo '<form name=page action='.$pageurl.'>';
   $page_info .= ' 转到';
   $page_info .= '<input type=text name=page value=\'1\' class=login_left style=\'width:28px;height:18px;\'>';
   $page_info .= '页<input type=submit name=submit3 class=login_submit style=\'width:28px;height:18px;padding-top:1px;\' onclick=document.myform.action.value=\'go\'> ';
   //echo '</form>';
   $page_info .= '</div>';
   $page_info .= '</div>';
      return $page_info;
}

// PHP 4.3 or above needed
define("BRIEF_LENGTH", 800);        //Word amount of the Briefing of an Article
function Generate_Brief($text){
    global $Briefing_Length;
    if(strlen($text) <= BRIEF_LENGTH ) return $text;    
    $Foremost = substr($text, 0, BRIEF_LENGTH);
    $re = "/<(\/?)(P|DIV|H1|H2|H3|H4|H5|H6|ADDRESS|PRE|TABLE|TR|TD|TH|INPUT|SELECT|TEXTAREA|OBJECT|A|UL|OL|LI|BASE|META|LINK|HR|BR|PARAM|IMG|AREA|INPUT|SPAN)[^>]*(>?)/i";
    $Single = "/BASE|META|LINK|HR|BR|PARAM|IMG|AREA|INPUT/i";    
    
    $Stack = array(); $posStack = array();
    preg_match_all($re,$Foremost,$matches, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
    
    /*    [Child-matching Specification]:
        
        $matches[$i][1] : A "/" charactor indicating whether current "<...>" Friction is Closing Part
        $matches[$i][2] : Element Name.
        $matches[$i][3] : Right > of a "<...>" Friction    */
    for($i = 0 ; $i < count($matches); $i++){
        if($matches[$i][1][0] == ""){
            $Elem = $matches[$i][2][0];
            if(preg_match($Single,$Elem) && $matches[$i][3][0] !=""){
                continue;
            }
            array_push($Stack, strtoupper($matches[$i][2][0]));
            array_push($posStack, $matches[$i][2][1]);            
            if($matches[$i][3][0] =="") break;
        }else{
            $StackTop = $Stack[count($Stack)-1];
            $End = strtoupper($matches[$i][2][0]);
            if(strcasecmp($StackTop,$End)==0){
                array_pop($Stack);
                array_pop($posStack);
                if($matches[$i][3][0] ==""){
                    $Foremost = $Foremost.">";
                }
            }
        }        
    }
    $cutpos = array_shift($posStack) - 1;    
    $Foremost = substr($Foremost,0,$cutpos);
    return $Foremost;
};

正则表达式用于字符串处理、表单验证等场合，实用高效。现将一些常用的表达式收集于此，以备不时之需。

匹配中文字符的正则表达式： [\u4e00-\u9fa5]
评注：匹配中文还真是个头疼的事，有了这个表达式就好办了

匹配双字节字符正则表达式(包括汉字在内)：[^\x00-\xff]
评注：可以用来计算字符串的长度（一个双字节字符长度计2，ASCII字符计1）

匹配空白行的正则表达式：\n\s*\r
评注：可以用来删除空白行

匹配HTML标记的正则表达式：<(\S*?)[^>]*>.*?</\1>|<.*? />
评注：网上流传的版本太糟糕，上面这个也仅仅能匹配部分，对于复杂的嵌套标记依旧无能为力

匹配首尾空白字符的正则表达式：^\s*|\s*$
评注：可以用来删除行首行尾的空白字符(包括空格、制表符、换页符等等)，非常有用的表达式

匹配Email地址的正则表达式：\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*
评注：表单验证时很实用

匹配网址URL的正则表达式：[a-zA-z]+://[^\s]*
评注：网上流传的版本功能很有限，上面这个基本可以满足需求

匹配帐号是否合法(字母开头，允许5-16字节，允许字母数字下划线)：^[a-zA-Z][a-zA-Z0-9_]{4,15}$
评注：表单验证时很实用

匹配国内电话号码：\d{3}-\d{8}|\d{4}-\d{7}
评注：匹配形式如 0511-4405222 或 021-87888822

匹配腾讯QQ号：[1-9][0-9]{4,}
评注：腾讯QQ号从10000开始

匹配中国邮政编码：[1-9]\d{5}(?!\d)
评注：中国邮政编码为6位数字

匹配身份证：\d{15}|\d{18}
评注：中国的身份证为15位或18位

匹配ip地址正则表达式：\d+\.\d+\.\d+\.\d+
评注：提取ip地址时有用

匹配特定数字：
^[1-9]\d*$　 　 //匹配正整数
^-[1-9]\d*$ 　 //匹配负整数
^-?[1-9]\d*$　　 //匹配整数
^[1-9]\d*|0$　 //匹配非负整数（正整数 + 0）
^-[1-9]\d*|0$　　 //匹配非正整数（负整数 + 0）
^[1-9]\d*\.\d*|0\.\d*[1-9]\d*$　　 //匹配正浮点数
^-([1-9]\d*\.\d*|0\.\d*[1-9]\d*)$　 //匹配负浮点数
^-?([1-9]\d*\.\d*|0\.\d*[1-9]\d*|0?\.0+|0)$　 //匹配浮点数
^[1-9]\d*\.\d*|0\.\d*[1-9]\d*|0?\.0+|0$　　 //匹配非负浮点数（正浮点数 + 0）
^(-([1-9]\d*\.\d*|0\.\d*[1-9]\d*))|0?\.0+|0$　　//匹配非正浮点数（负浮点数 + 0）
评注：处理大量数据时有用，具体应用时注意修正

匹配特定字符串：
^[A-Za-z]+$　　//匹配由26个英文字母组成的字符串
^[A-Z]+$　　//匹配由26个英文字母的大写组成的字符串
^[a-z]+$　　//匹配由26个英文字母的小写组成的字符串
^[A-Za-z0-9]+$　　//匹配由数字和26个英文字母组成的字符串
^\w+$　　//匹配由数字、26个英文字母或者下划线组成的字符串
评注：最基本也是最常用的一些表达式