压缩与解压Zip(PHPZip种)

程序员文章站 2022-05-10 19:49:20

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压缩与解压Zip(PHPZip类)

PHPZip类来源：网络

visitFile()函数来源：http://topic.csdn.net/u/20071225/11/e6a8db84-df02-4622-987b-2a4ed4a5eef0.html (第14楼)

注：修改为可遍历子文件夹（替换遍历方法为visitFile()）；

?? ? 添加GetZipComment()方法；

?? ? 加上用法说明(注释部分)。

visitFile(文件夹路径);        // print "当前文件夹的文件:\r\n";        // foreach($filelist as $file)        //     printf("%s
\r\n", $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'] > 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       = "\x50\x4b\x03\x04";            $fr      .= "\x14\x00";            $fr      .= "\x00\x00";            $fr      .= "\x08\x00";            $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  = "\x50\x4b\x01\x02";            $cdrec .= "\x00\x00";            $cdrec .= "\x14\x00";            $cdrec .= "\x00\x00";            $cdrec .= "\x08\x00";            $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 = "\x50\x4b\x05\x06\x00\x00\x00\x00";        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))                   . "\x00\x00";        }                    // ------------------------------------------------------ //        // #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, $zipfile)        // [email protected]($zipfile, 'rb')打开的        // $zipfile是zip文件的路径        // ------------------------------------------------------ //        private function ReadCentralDir($zip, $zipfile)        {            $size     = filesize($zipfile);            $max_size = ($size > 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) != "/"){ $to .= "/"; }            if([email protected]_dir($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 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; $iunZip($zipfile, $savepath, $i) > 0){        //             $filecount++;        //         }else{        //             $failfiles[] = $array[$i][filename];        //         }        //     }else{        //         $dircount++;        //     }        // }        // set_time_limit(30);        //printf("文件夹:%d    解压文件:%d    失败:%d
\r\n", $dircount, $filecount, count($failfiles));        //if(count($failfiles) > 0){        //    foreach($failfiles as $file){        //        printf("·%s
\r\n", $file);        //    }        //}        // ------------------------------------------------------ //        public function unZip($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; $iReadCentralFileHeaders($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·%s
\r\n", $array[$i][filename]);        //     foreach($array[$i] as $key => $value)        //         printf("%s => %s
\r\n", $key, $value);        //     print "\r\n
------------------------------------
\r\n\r\n";        // }        // ------------------------------------------------------ //        public function GetZipInnerFilesInfo($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; $iReadCentralFileHeaders($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];        }    }?>
  压缩到服务器:  
------------------
  压缩目录:　　　　　(例如./folder)
  另存为路径和文件名:(例如./folder/file.zip)(需要填写扩展名)




    压缩并下载  
------------------
  文件所在目录:(例如./folder)



    在线解压zip  
------------------
  文件:　(例如./folder/file.zip)
  解压到:(例如./folder)



    读取压缩文件内部文件信息和注释  
------------------
  文件:(例如./folder/file.zip)

    echo "
\r\n";    echo "
--------------------------
\r\n";    echo "显示信息:\r\n";    echo "
--------------------------
\r\n";        $archive  = new PHPZip();    if(!empty($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; $iunZip($zipfile, $savepath, $i) > 0){                    $filecount++;                }else{                    $failfiles[] = $array[$i][filename];                }            }else{                $dircount++;            }        }             set_time_limit(30);printf("文件夹:%d    解压文件:%d    失败:%d
\r\n", $dircount, $filecount, count($failfiles));        if(count($failfiles) > 0){            foreach($failfiles as $file){                printf("·%s
\r\n", $file);            }        }    }    elseif(!empty($readfileinfo))    {        $array = $archive->GetZipInnerFilesInfo($readfile);        for($i=0; $i·%s
\r\n", $array[$i][filename]);            foreach($array[$i] as $key => $value)                printf("%s => %s
\r\n", $key, $value);            print "\r\n
------------------------------------
\r\n\r\n";        }    }    elseif(!empty($readcomment))    {        $comment = $archive->GetZipComment($readfile);        printf("%s
\r\n", $comment);    }?>