php_zip 类

<?php

/**
 * Created by PhpStorm.
 * User: StarZhan
 * Date: 2016/5/24
 * Time: 12:04
 */
class PHPZip
{
   private $ctrl_dir = array();
   private $datasec = array();

   /**********************************************************
    * 压缩部分
    **********************************************************/
   // ------------------------------------------------------ //
   // #遍历指定文件夹
   //
   // $archive  = new PHPZip();
   // $filelist = $archive->visitFile(文件夹路径);
   // print "当前文件夹的文件:<p>\r\n";
   // foreach($filelist as $file)
   //     printf("%s<br>\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'] < 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 = "\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();
   // $archive->ZipAndDownload("需压缩的文件所在目录");
   // ------------------------------------------------------ //
   public function ZipAndDownload($filelist, $fileName = "网申资料")
   {
      if (@!function_exists('gzcompress')) {
         return;
      }

      ob_end_clean();
      //$filelist = $this->visitFile($dir);
      if (count($filelist) == 0) {
         return;
      }

      foreach ($filelist as $fileinfo) {
         $info = $fileinfo['name'];
         $file = $fileinfo['path'];
         if (!file_exists($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/)
         $tmpfile = explode('/', $file);
         $file = end($tmpfile);
         $tmpext = explode('.', $file);
         $ext = end($tmpext);
//       if (substr($file, 0, 1) == "\\" || substr($file, 0, 1) == "/") {
//          $file = substr($file, 1);
//       }
         $info = iconv("UTF-8", "GBK", $info);
         $file = $info . "." . $ext;
         $this->addFile($content, $file);
      }
      $out = $this->file();

      @header('Content-Encoding: none');
      @header('Content-Type: application/zip');
      @header('Content-Disposition: attachment ; filename=' . $fileName . date("YmdHis", time()) . '.zip');
      @header('Pragma: no-cache');
      @header('Expires: 0');
      print($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);
      }
      $pthss = '';
      $pth = explode("/", dirname($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>\r\n", $dircount, $filecount, count($failfiles));
//if(count($failfiles) > 0){
//    foreach($failfiles as $file){
//        printf("&middot;%s<br>\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; $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>\r\n", $array[$i][filename]);
//     foreach($array[$i] as $key => $value)
//         printf("%s => %s<br>\r\n", $key, $value);
//     print "\r\n<p>------------------------------------<p>\r\n\r\n";
// }
// ------------------------------------------------------ //
   public function GetZipInnerFilesInfo($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; $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];
   }
}

调用方法