PHP 压缩文件夹的类！

 <?php
/*
  $Id: PHPZip.php
*/
class PHPZip {
  var $datasec      = array();
  var $ctrl_dir     = array();
  var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
  var $old_offset   = 0;
  function Zip($dir, $zipfilename) {
    if (@function_exists('gzcompress')) {
      @set_time_limit("0");
      $this->openFile($dir,$dir);
      $out = $this -> filezip();
      $fp = fopen($zipfilename, "w");
      fwrite($fp, $out, strlen($out));
      fclose($fp);
    }
  }
  function openFile($path, $zipName) {
     
    $temp_path = $path;
    $temp_zip_path = $zipName;
    $zipDir = $zipName;
    if ($handle = @opendir($path)) {
      while (false !== ($file = readdir($handle))) {
        if($file !='.' and $file !='..'){
          if(ereg('\.' , $file.@basename())) {
            $fd = fopen($path.'/'.$file, "r");
            $fileValue = @fread ($fd, 1024000);
            fclose ($fd);
            $this -> addFile($fileValue, $zipName . '/' . $file);
          } else {
            $this ->openFile($path.'/'.$file, $zipName . '/' . $file);
          }
  &nbs