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:

<"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) "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
"htmlcode">
$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。

标签:
PHP,多个文件,压缩,zip格式,下载

免责声明:本站文章均来自网站采集或用户投稿,网站不提供任何软件下载或自行开发的软件! 如有用户或公司发现本站内容信息存在侵权行为,请邮件告知! 858582#qq.com
狼山资源网 Copyright www.pvsay.com

稳了!魔兽国服回归的3条重磅消息!官宣时间再确认!

昨天有一位朋友在大神群里分享,自己亚服账号被封号之后居然弹出了国服的封号信息对话框。

这里面让他访问的是一个国服的战网网址,com.cn和后面的zh都非常明白地表明这就是国服战网。

而他在复制这个网址并且进行登录之后,确实是网易的网址,也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情,因为以前都没有出现这样的情况,现在突然提示跳转到国服战网的网址,是不是说明了简体中文客户端已经开始进行更新了呢?