php_zip 类

Posted 2020-08-05 詹老师

<?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