PHP实现将多个文件压缩成zip格式并下载到本地的方法示例

php  /  管理员 发布于 7年前   230

本文实例讲述了PHP实现将多个文件压缩成zip格式并下载到本地的方法。分享给大家供大家参考，具体如下：

废话不多说，直接上代码

//这里需要注意该目录是否存在，并且有创建的权限$zipname = 'path/test.zip'//这是要打包的文件地址数组$files = array("mypath/test1.txt","mypath/test2.pdf");$zip = new ZipArchive();$res = $zip->open($zipname, ZipArchive::CREATE);if ($res === TRUE) { foreach ($files as $file) { //这里直接用原文件的名字进行打包，也可以直接命名，需要注意如果文件名字一样会导致后面文件覆盖前面的文件，所以建议重新命名  $new_filename = substr($file, strrpos($file, '/') + 1);  $zip->addFile($file, $new_filename); }}//关闭文件$zip->close();

//这里是下载zip文件header("Content-Type: application/zip");header("Content-Transfer-Encoding: Binary");header("Content-Length: " . filesize($zipname));header("Content-Disposition: attachment; filename=\"" . basename($zipname) . "\"");readfile($zipname);exit;

附：这里再为大家提供一个zip压缩类：

 GetFileList($dir);      }      if ((!empty($dir))&&(!is_array($dir))&&(file_exists($dir))) chdir($dir);      else chdir($curdir);      if (count($filelist)>0)      {        foreach($filelist as $filename)        {          if (is_file($filename))          {$fd = fopen ($filename, "r");$content = fread ($fd, filesize ($filename));fclose ($fd);if (is_array($dir)) $filename = basename($filename);$this -> addFile($content, $filename);          }        }        $out = $this -> file();        chdir($curdir);        $fp = fopen($zipfilename, "w");        fwrite($fp, $out, strlen($out));        fclose($fp);      }      return 1;    }     else return 0;  }  function GetFileList($dir)  {    if (file_exists($dir))    {      $args = func_get_args();      $pref = $args[1];      $dh = opendir($dir);      while($files = readdir($dh))      {        if (($files!=".")&&($files!=".."))         {          if (is_dir($dir.$files))           {$curdir = getcwd();chdir($dir.$files);$file = array_merge($file, $this -> GetFileList("", "$pref$files/"));chdir($curdir);          }          else $file[]=$pref.$files;        }      }      closedir($dh);    }    return $file;  }  var $datasec   = array();  var $ctrl_dir   = array();  var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00";  var $old_offset  = 0;  /**   * Converts an Unix timestamp to a four byte DOS date and time format (date   * in high two bytes, time in low two bytes allowing magnitude comparison).   *   * @param integer the current Unix timestamp   *   * @return integer the current date in a four byte DOS format   *   * @access private   */  function unix2DosTime($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;      $timearray['seconds'] = 0;    } // end if    return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |        ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);  } // end of the 'unix2DosTime()' method  /**   * Adds "file" to archive   *   * @param string  file contents   * @param string  name of the file in the archive (may contains the path)   * @param integer the current timestamp   *   * @access public   */  function addFile($data, $name, $time = 0)  {    $name   = str_replace('', '/', $name);    $dtime  = dechex($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";      // ver needed to extract    $fr  .= "x00x00";      // gen purpose bit flag    $fr  .= "x08x00";      // compression method    $fr  .= $hexdtime;       // last mod time and date    // "local file header" segment    $unc_len = strlen($data);    $crc   = crc32($data);    $zdata  = gzcompress($data);    $c_len  = strlen($zdata);    $zdata  = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug    $fr   .= pack('V', $crc);       // crc32    $fr   .= pack('V', $c_len);      // compressed filesize    $fr   .= pack('V', $unc_len);     // uncompressed filesize    $fr   .= pack('v', strlen($name));  // length of filename    $fr   .= pack('v', 0);        // extra field length    $fr   .= $name;    // "file data" segment    $fr .= $zdata;    // "data descriptor" segment (optional but necessary if archive is not    // served as file)    $fr .= pack('V', $crc);         // crc32    $fr .= pack('V', $c_len);        // compressed filesize    $fr .= pack('V', $unc_len);       // uncompressed filesize    // add this entry to array    $this -> datasec[] = $fr;    $new_offset    = strlen(implode('', $this->datasec));    // now add to central directory record    $cdrec = "x50x4bx01x02";    $cdrec .= "x00x00";        // version made by    $cdrec .= "x14x00";        // version needed to extract    $cdrec .= "x00x00";        // gen purpose bit flag    $cdrec .= "x08x00";        // compression method    $cdrec .= $hexdtime;         // last mod time & date    $cdrec .= pack('V', $crc);      // crc32    $cdrec .= pack('V', $c_len);     // compressed filesize    $cdrec .= pack('V', $unc_len);    // uncompressed filesize    $cdrec .= pack('v', strlen($name) ); // length of filename    $cdrec .= pack('v', 0 );       // extra field length    $cdrec .= pack('v', 0 );       // file comment length    $cdrec .= pack('v', 0 );       // disk number start    $cdrec .= pack('v', 0 );       // internal file attributes    $cdrec .= pack('V', 32 );      // external file attributes - 'archive' bit set    $cdrec .= pack('V', $this -> old_offset ); // relative offset of local header    $this -> old_offset = $new_offset;    $cdrec .= $name;    // optional extra field, file comment goes here    // save to central directory    $this -> ctrl_dir[] = $cdrec;  } // end of the 'addFile()' method  /**   * Dumps out file   *   * @return string the zipped file   *   * @access public   */  function file()  {    $data  = implode('', $this -> datasec);    $ctrldir = implode('', $this -> ctrl_dir);    return      $data .      $ctrldir .      $this -> eof_ctrl_dir .      pack('v', sizeof($this -> ctrl_dir)) . // total # of entries "on this disk"      pack('v', sizeof($this -> ctrl_dir)) . // total # of entries overall      pack('V', strlen($ctrldir)) .      // size of central dir      pack('V', strlen($data)) .       // offset to start of central dir      "x00x00";   // .zip file comment length  } // end of the 'file()' method} // end of the 'PHPZip' class?>

用法：

$zipfiles =array("/root/pooy/test1.txt","/root/pooy/test2.txt");$z = new PHPZip();//$randomstr = random(8);$zipfile = TEMP."/photocome_".$groupid.".zip";$z->Zip($zipfiles, $zipfile);

更多关于PHP相关内容感兴趣的读者可查看本站专题：《PHP操作zip文件及压缩技巧总结》、《php文件操作总结》、《PHP基本语法入门教程》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

希望本文所述对大家PHP程序设计有所帮助。

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