PHP operation Zip_PHP tutorial-PHP Tutorial-php.cn

     class PHPZip

    {

         private $ctrl_dir     = array();

         private $datasec      = array();




         /**********************************************************

       * ѹ��

        **********************************************************/

        // ------------------------------------------------------ //

         // #��ָ��ļ��

        //

        // $archive = new PHPZip();

        // $filelist = $archive->visitFile(�ļ��·��);

        // print "��ǰ�ļ��е��ļ�:

rn";

       // foreach($filelist as $file)

        //     printf("%s
rn", $file);

        // ------------------------------------------------------ //

       var $fileList = array();

        public function visitFile($path)

        {

             global $fileList;

           $path = str_replace("\", "/", $path);

          $fdir = dir($path);


           while(($file = $fdir->read()) !== false)
          {

              if($file == '.' || $file == '..'){ continue; }



                $pathSub    = preg_replace("*/{2,}*", "/", $path."/".$file); // �滻��б��

                $fileList[] = is_dir($pathSub) ? $pathSub."/" : $pathSub;

            if(is_dir($pathSub)){ $this->visitFile($pathSub); }
          }
           $fdir->close();

           return $fileList;

       }



        private function unix2DosTime($unixtime = 0)

        {
            $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);



           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);

        }





        var $old_offset = 0;

        private function addFile($data, $filename, $time = 0)
       {

            $filename = str_replace('\', '/', $filename);



           $dtime    = dechex($this->unix2DosTime($time));

           $hexdtime = 'x' . $dtime[6] . $dtime[7]

                    . 'x' . $dtime[4] . $dtime[5]

                     . 'x' . $dtime[2] . $dtime[3]

                       . 'x' . $dtime[0] . $dtime[1];

            eval('$hexdtime = "' . $hexdtime . '";');



           $fr       = "x50x4bx03x04";

          $fr      .= "x14x00";

          $fr      .= "x00x00";

            $fr      .= "x08x00";

          $fr      .= $hexdtime;

           $unc_len = strlen($data);

           $crc      = crc32($data);

          $zdata    = gzcompress($data);

           $c_len    = strlen($zdata);

           $zdata    = substr(substr($zdata, 0, strlen($zdata) - 4), 2);

           $fr      .= pack('V', $crc);

            $fr      .= pack('V', $c_len);

           $fr      .= pack('V', $unc_len);

          $fr      .= pack('v', strlen($filename));

           $fr      .= pack('v', 0);

          $fr      .= $filename;



           $fr      .= $zdata;



           $fr      .= pack('V', $crc);

           $fr      .= pack('V', $c_len);

          $fr      .= pack('V', $unc_len);



            $this->datasec[] = $fr;

            $new_offset      = strlen(implode('', $this->datasec));


           $cdrec = "x50x4bx01x02";

           $cdrec .= "x00x00";

            $cdrec .= "x14x00";

           $cdrec .= "x00x00";

         $cdrec .= "x08x00";

          $cdrec .= $hexdtime;

           $cdrec .= pack('V', $crc);

            $cdrec .= pack('V', $c_len);

            $cdrec .= pack('V', $unc_len);

            $cdrec .= pack('v', strlen($filename) );

           $cdrec .= pack('v', 0 );

          $cdrec .= pack('v', 0 );

           $cdrec .= pack('v', 0 );

         $cdrec .= pack('v', 0 );

           $cdrec .= pack('V', 32 );



            $cdrec .= pack('V', $this->old_offset );

          $this->old_offset = $new_offset;



            $cdrec .= $filename;

           $this->ctrl_dir[] = $cdrec;

       }





        var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00";

        private function file()

         {

             $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))

                  . "x00x00";

       }





       // ------------------------------------------------------ //

       // #ѹ��

       //

       // $archive = new PHPZip();

       // $archive->Zip("��ѹ��ļ��Ŀ¼", "ZIPѹ��ļ��");

         // ------------------------------------------------------ //

         public function Zip($dir, $saveName)

         {

             if(@!function_exists('gzcompress')){ return; }



             ob_end_clean();

             $filelist = $this->visitFile($dir);

             if(count($filelist) == 0){ return; }



             foreach($filelist as $file)

             {

                 if(!file_exists($file) || !is_file($file)){ continue; }



                 $fd       = fopen($file, "rb");

                 $content = @fread($fd, filesize($file));

                 fclose($fd);



                 // 1.ɾ��$dir��ַ�(./folder/file.txtɾ��./folder/)

                 // 2.��/��ɾ��(/file.txtɾ��/)

                 $file = substr($file, strlen($dir));

                 if(substr($file, 0, 1) == "\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }



                 $this->addFile($content, $file);

             }

             $out = $this->file();



             $fp = fopen($saveName, "wb");

             fwrite($fp, $out, strlen($out));

             fclose($fp);

         }





         // ------------------------------------------------------ //

         // #ѹ��ֱ��

         //

         // $archive = new PHPZip();

         // $archive->ZipAndDownload("��ѹ��ļ��Ŀ¼");

         // ------------------------------------------------------ //

         public function ZipAndDownload($dir)

         {

             if(@!function_exists('gzcompress')){ return; }



             ob_end_clean();

             $filelist = $this->visitFile($dir);

             if(count($filelist) == 0){ return; }



             foreach($filelist as $file)

             {

                 if(!file_exists($file) || !is_file($file)){ continue; }



                 $fd       = fopen($file, "rb");

                 $content = @fread($fd, filesize($file));

                 fclose($fd);



                 // 1.ɾ��$dir��ַ�(./folder/file.txtɾ��./folder/)

                 // 2.��/��ɾ��(/file.txtɾ��/)

                 $file = substr($file, strlen($dir));

                 if(substr($file, 0, 1) == "\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }



                 $this->addFile($content, $file);

             }

             $out = $this->file();



             @header('Content-Encoding: none');

             @header('Content-Type: application/zip');

             @header('Content-Disposition: attachment ; filename=Farticle'.date("YmdHis", time()).'.zip');

             @header('Pragma: no-cache');

             @header('Expires: 0');

             print($out);

         }



         /**********************************************************

          * ��ѹ��

          **********************************************************/

         // ------------------------------------------------------ //

         // ReadCentralDir($zip, $zipfile)

         // $zip�Ǿ��@fopen($zipfile, 'rb')�

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