PHP压缩与解压Zip(PHPZip类)

<?php

    class PHPZip

    {

        private $ctrl_dir     = array();

        private $datasec      = array();

 

 

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

         * 压缩部分

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

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

        // #遍历指定文件夹

        //

        // $archive  = new PHPZip();

        // $filelist = $archive->visitFile(文件夹路径);

        // print "当前文件夹的文件:<p> ";

        // foreach($filelist as $file)

        //     printf("%s<br> ", $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);  // 替换多个反斜杠

                $fileList[] = is_dir($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";

        }

     

         

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

        // #压缩到服务器

        //

        // $archive = new PHPZip();

        // $archive->Zip("需压缩的文件所在目录", "ZIP压缩文件名");

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

        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.删除$dir的字符(./folder/file.txt删除./folder/)

                // 2.如果存在/就删除(/file.txt删除/)

                $file = substr($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);

        }

     

     

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

        // #压缩并直接下载

        //

        // $archive = new PHPZip();

        // $archive->ZipAndDownload("需压缩的文件所在目录");

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

        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.删除$dir的字符(./folder/file.txt删除./folder/)

                // 2.如果存在/就删除(/file.txt删除/)

                $file = substr($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);

        }

         

         

         

         

         

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

         * 解压部分

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

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

        // ReadCentralDir($zip, $zipfile)

        // $zip是经过@fopen($zipfile, 'rb')打开的

        // $zipfile是zip文件的路径

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

        private function ReadCentralDir($zip, $zipfile)

        {

            $size     = filesize($zipfile);

            $max_size = ($size < 277) ? $size : 277;

             

            @fseek($zip, $size - $max_size);

            $pos   = ftell($zip);

            $bytes = 0x00000000;

             

            while($pos < $size)

            {

                $byte  = @fread($zip, 1);

                $bytes = ($bytes << 8) | Ord($byte);

                $pos++;

                if($bytes == 0x504b0506){ break; }

            }

             

            $data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', fread($zip, 18));

 

            $centd['comment']      = ($data['comment_size'] != 0) ? fread($zip, $data['comment_size']) : '';  // 注释

            $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;

        }

         

         

        private 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);

 

            $header['filename'] = ($header['filename_len'] != 0) ? fread($zip, $header['filename_len']) : '';

            $header['extra']    = ($header['extra_len']    != 0) ? fread($zip, $header['extra_len'])    : '';

            $header['comment']  = ($header['comment_len']  != 0) ? fread($zip, $header['comment_len'])  : '';

 

     

            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; }  // 判断是否文件夹

            return $header;

        }

     

     

        private 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']);

            $header['extra']           = ($data['extra_len'] != 0) ? fread($zip, $data['extra_len']) : '';

            $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;

        }

     

     

        private 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; }

                $pthss .= $pth[$i]."/";

                if(!is_dir($to.$pthss)){ @mkdir($to.$pthss, 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;

        }

         

         

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

        // #解压文件

        //

        // $archive   = new PHPZip();

        // $zipfile   = "ZIP压缩文件名";

        // $savepath  = "解压缩目录名";

        // $zipfile   = $unzipfile;

        // $savepath  = $unziptarget;

        // $array     = $archive->GetZipInnerFilesInfo($zipfile);

        // $filecount = 0;

        // $dircount  = 0;

        // $failfiles = array();

        // set_time_limit(0);  // 修改为不限制超时时间(默认为30秒)

        //

        // for($i=0; $i<count($array); $i++) {

        //     if($array[$i][folder] == 0){

        //         if($archive->unZip($zipfile, $savepath, $i) > 0){

        //             $filecount++;

        //         }else{

        //             $failfiles[] = $array[$i][filename];

        //         }

        //     }else{

        //         $dircount++;

        //     }

        // }

        // set_time_limit(30);

        //printf(" 文件夹:%d&nbsp;&nbsp;&nbsp;&nbsp;解压文 件:%d&nbsp;&nbsp;&nbsp;&nbsp;失败:%d<br> ", $dircount, $filecount, count($failfiles));

        //if(count($failfiles) > 0){

        //    foreach($failfiles as $file){

        //        printf("&middot;%s<br> ", $file);

        //    }

        //}

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

        public function unZip($zipfile, $to, $index = Array(-1))

        {

            $ok  = 0;

            $zip = @fopen($zipfile, 'rb');

            if(!$zip){ return(-1); }

             

            $cdir      = $this->ReadCentralDir($zip, $zipfile);

            $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;

        }

         

         

         

         

         

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

         * 其它部分

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

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

        // #获取被压缩文件的信息

        //

        // $archive = new PHPZip();

        // $array = $archive->GetZipInnerFilesInfo(ZIP压缩文件名);

        // for($i=0; $i<count($array); $i++) {

        //     printf("<b>&middot;%s</b><br> ", $array[$i][filename]);

        //     foreach($array[$i] as $key => $value)

        //         printf("%s => %s<br> ", $key, $value);

        //     print " <p>------------------------------------<p> ";

        // }

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

        public function GetZipInnerFilesInfo($zipfile)

        {

            $zip = @fopen($zipfile, 'rb');

            if(!$zip){ return(0); }

            $centd = $this->ReadCentralDir($zip, $zipfile);

             

            @rewind($zip);

            @fseek($zip, $centd['offset']);

            $ret = array();

 

            for($i=0; $i<$centd['entries']; $i++)

            {

                $header          = $this->ReadCentralFileHeaders($zip);

                $header['index'] = $i;

                $info = array(

                    'filename'        => $header['filename'],                   // 文件名

                    'stored_filename' => $header['stored_filename'],            // 压缩后文件名

                    'size'            => $header['size'],                       // 大小

                    'compressed_size' => $header['compressed_size'],            // 压缩后大小

                    'crc'             => strtoupper(dechex($header['crc'])),    // CRC32

                    'mtime'           => date("Y-m-d H:i:s",$header['mtime']),  // 文件修改时间

                    'comment'         => $header['comment'],                    // 注释

                    'folder'          => ($header['external'] == 0x41FF0010 || $header['external'] == 16) ? 1 : 0,  // 是否为文件夹

                    'index'           => $header['index'],                      // 文件索引

                    'status'          => $header['status']                      // 状态

                );

                $ret[] = $info;

                unset($header);

            }

            fclose($zip);

            return $ret;

        }

         

         

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

        // #获取压缩文件的注释

        //

        // $archive = new PHPZip();

        // echo $archive->GetZipComment(ZIP压缩文件名);

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

        public function GetZipComment($zipfile)

        {

            $zip = @fopen($zipfile, 'rb');

            if(!$zip){ return(0); }

            $centd = $this->ReadCentralDir($zip, $zipfile);

            fclose($zip);

            return $centd[comment];

        }

    }

?>

 

 

 

 

 

<form method="post">

  压缩到服务器:

  <br>------------------<br>

  压缩目录:　　　　　<input name="zipdir" type="text" id="zipdir" />(例如./folder)<br>

  另存为路径和文件名:<input name="savename" type="text" id="savename" />(例如./folder/file.zip)(需要填写扩展名)<br>

  <input name="zip" type="submit" id="zip" value="压缩" /><br>

  <br><br><br>

   

  压缩并下载

  <br>------------------<br>

  文件所在目录:<input name="zipdowndir" type="text" id="zipdowndir" />(例如./folder)<br>

  <input name="zipdown" type="submit" id="zipdown" value="压缩并下载" />

  <br><br><br>

   

  在线解压zip

  <br>------------------<br>

  文件:　<input name="unzipfile" type="text" id="unzipfile" />(例如./folder/file.zip)<br>

  解压到:<input name="unziptarget" type="text" id="unziptarget" />(例如./folder)<br>

  <input name="unzip" type="submit" id="unzip" value="解压" />

  <br><br><br>

   

  读取压缩文件内部文件信息和注释

  <br>------------------<br>

  文件:<input name="readfile" type="text" id="readfile" />(例如./folder/file.zip)<br>

  <input name="readfileinfo" type="submit" id="readfileinfo" value="读取内部文件信息" />

  <input name="readcomment" type="submit" id="readcomment" value="读取注释" />

</form>

<?

    echo "<p><p> ";

    echo "<br>--------------------------<br> ";

    echo "显示信息: ";

    echo "<br>--------------------------<br> ";

     

    $archive  = new PHPZip();

    if(!empty($zip))

    {

        $archive->Zip($zipdir, $savename);

    }

    elseif(!empty($zipdown))

    {

        $archive->ZipAndDownload($zipdowndir);

    }

    elseif(!empty($unzip))

    {

        $zipfile   = $unzipfile;

        $savepath  = $unziptarget;

        $array     = $archive->GetZipInnerFilesInfo($zipfile);

        $filecount = 0;

        $dircount  = 0;

        $failfiles = array();

        set_time_limit(0);  // 修改为不限制超时时间(默认为30秒)

         

        for($i=0; $i<count($array); $i++) {

            if($array[$i][folder] == 0){

                if($archive->unZip($zipfile, $savepath, $i) > 0){

                    $filecount++;

                }else{

                    $failfiles[] = $array[$i][filename];

                }

            }else{

                $dircount++;

            }

        }

 

             set_time_limit(30);

 

printf("文件夹:%d&nbsp;&nbsp;&nbsp;&nbsp;解压文件:%d&nbsp;&nbsp;&nbsp;&nbsp;失败:%d<br> ", $dircount, $filecount, count($failfiles));

        if(count($failfiles) > 0){

            foreach($failfiles as $file){

                printf("&middot;%s<br> ", $file);

            }

        }

    }

    elseif(!empty($readfileinfo))

    {

        $array = $archive->GetZipInnerFilesInfo($readfile);

        for($i=0; $i<count($array); $i++) {

            printf("<b>&middot;%s</b><br> ", $array[$i][filename]);

            foreach($array[$i] as $key => $value)

                printf("%s => %s<br> ", $key, $value);

            print " <p>------------------------------------<p> ";

        }

    }

    elseif(!empty($readcomment))

    {

        $comment = $archive->GetZipComment($readfile);

        printf("%s<br> ", $comment);

    }

?>