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


Posted in PHP onMay 23, 2018

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:

<?php
# 
# PHPZip v1.2 by Sext (sext@neud.net) 2002-11-18
#   (Changed: 2003-03-01)
# 
# Makes zip archive
#
# Based on "Zip file creation class", uses zLib
#
#
class PHPZip
{
  function Zip($dir, $zipfilename)
  {
    if (@function_exists('gzcompress'))
    {  
      $curdir = getcwd();
      if (is_array($dir)) 
      {
          $filelist = $dir;
      }
      else 
      {
        $filelist = $this -> GetFileList($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);

希望本文所述对大家PHP程序设计有所帮助。

PHP 相关文章推荐
php代码把全角数字转为半角数字
Dec 10 PHP
php设计模式 Interpreter(解释器模式)
Jun 26 PHP
PHP运行出现Notice : Use of undefined constant 的完美解决方案分享
Mar 05 PHP
PHP $_FILES中error返回值详解
Jan 30 PHP
thinkphp实现图片上传功能分享
Mar 04 PHP
PHP网页游戏学习之Xnova(ogame)源码解读(十二)
Jun 25 PHP
PHP中Memcache操作类及用法实例
Dec 12 PHP
PHP四舍五入、取整、round函数使用示例
Feb 06 PHP
PHP实现XML与数据格式进行转换类实例
Jul 29 PHP
php中文字符串截取多种方法汇总
Oct 06 PHP
PHP的介绍以及优势详细分析
Sep 05 PHP
PHP终止脚本运行三种实现方法详解
Sep 01 PHP
PHP实现的mysql读写分离操作示例
May 22 #PHP
PHP基于pdo的数据库操作类【可支持mysql、sqlserver及oracle】
May 21 #PHP
PHP+MariaDB数据库操作基本技巧备忘总结
May 21 #PHP
PhpStorm本地断点调试的方法步骤
May 21 #PHP
PHP自动识别当前使用移动终端
May 21 #PHP
PHP连接MySQL数据库并以json格式输出
May 21 #PHP
PHP 访问数据库配置通用方法(json)
May 20 #PHP
You might like
PHP开发的一些注意点总结
2010/10/12 PHP
PHP实现获取客户端IP并获取IP信息
2015/03/17 PHP
PHP分页显示的方法分析【附PHP通用分页类】
2018/05/10 PHP
PHP sdk文档处理常用代码示例解析
2020/12/09 PHP
表单项的name命名为submit、reset引起的问题
2007/12/22 Javascript
javascript 利用Image对象实现的埋点(某处的点击数)统计
2012/12/28 Javascript
jquery实现点击TreeView文本父节点展开/折叠子节点
2013/01/10 Javascript
JQ实现新浪游戏首页幻灯片
2015/07/29 Javascript
使用Javascript写的2048小游戏
2015/11/25 Javascript
JS中常用的正则表达式
2016/09/29 Javascript
Bootstrap CSS组件之大屏幕展播
2016/12/17 Javascript
BootStrapValidator校验方式
2016/12/19 Javascript
JS对象是否拥有某属性如何判断
2017/02/03 Javascript
JS在浏览器中解析Base64编码图像
2017/02/09 Javascript
jQuery实现全选、反选和不选功能
2017/08/16 jQuery
jQuery简单实现根据日期计算星期几的方法
2019/01/09 jQuery
Javascript模拟实现new原理解析
2020/03/03 Javascript
es6函数之rest参数用法实例分析
2020/04/18 Javascript
jQuery cookie的公共方法封装和使用示例
2020/06/01 jQuery
原生JavaScript实现五子棋游戏
2020/11/09 Javascript
[01:00:49]DOTA2-DPC中国联赛 正赛 Ehome vs iG BO3 第二场 1月31日
2021/03/11 DOTA
浅谈scrapy 的基本命令介绍
2017/06/13 Python
python中字符串的操作方法大全
2018/06/03 Python
flask 使用 flask_apscheduler 做定时循环任务的实现
2019/12/10 Python
爬虫代理池Python3WebSpider源代码测试过程解析
2019/12/20 Python
Python爬虫爬取微信朋友圈
2020/08/06 Python
New Balance俄罗斯官方网上商店:购买运动鞋
2020/03/02 全球购物
怎样在程序里获得一个空指针
2015/01/24 面试题
幼儿园实习生辞职信
2014/01/20 职场文书
2014乡镇“三八”国际劳动妇女节活动总结
2014/03/01 职场文书
2014国培学习感言
2014/03/05 职场文书
购房意向书
2014/04/01 职场文书
2014世界杯球队球队口号
2014/06/05 职场文书
小学四年级学生评语
2014/12/26 职场文书
新学期开学寄语2016
2015/12/04 职场文书
Java设计模式之享元模式示例详解
2022/03/03 Java/Android