PHP zip压缩包操作类完整实例

本文实例讲述了PHP zip压缩包操作类。分享给大家供大家参考，具体如下：

zip = new ZipArchive;
  }
  
  public function unzip ($zipfile, $path) {
    if ($this->zip->open($zipfile) === true) {
      $file_tmp = @fopen($zipfile, "rb");
      $bin = fread($file_tmp, 15); //只读15字节 各个不同文件类型，头信息不一样。
      fclose($file_tmp);
      
      if (true === $this->getTypeList($bin))
      {
 $result = $this->zip->extractTo($path);
 $this->zip->close();
 return $result;
      }
      else
      {
 return false;
      }
    }
    return false;
  }
  
   public function zip ($zipfile, $folder, $ignored = null) {
    $this->ignored_names = is_array($ignored) ? $ignored : $ignored ? array($ignored) : array();
    if ($this->zip->open($zipfile, ZIPARCHIVE::CREATE) !== true) {
      throw new Exception("cannot open <$zipfile>n");
    }
    $folder = substr($folder, -1) == '/' ? substr($folder, 0, strlen($folder)-1) : $folder;
    if(strstr($folder, '/')) {
      $this->root = substr($folder, 0, strrpos($folder, '/')+1);
      $folder = substr($folder, strrpos($folder, '/')+1);
    }
    $this->createZip($folder);
    return $this->zip->close();
  }
  
  private function createZip ($folder, $parent=null) {
    $full_path = $this->root . $parent . $folder;
    $zip_path = $parent . $folder;
    $this->zip->addEmptyDir($zip_path);
    $dir = new DirectoryIterator($full_path);
    foreach($dir as $file) {
      if(!$file->isDot()) {
 $filename = $file->getFilename();
 if(!in_array($filename, $this->ignored_names)) {
   if($file->isDir()) {
     $this->createZip($filename, $zip_path.'/');
   }else {
     $this->zip->addFile($full_path.'/'.$filename, $zip_path.'/'.$filename);
   }
 }
      }
    }
  }
  
  public function fileList($zipfile) {
    $file_dir_list = array();
    $file_list = array();
    if ($this->zip->open($zipfile) == true) {
      for ($i = 0; $i < $this->zip->numFiles; $i++) {
 $numfiles = $this->zip->getNameIndex($i);
 if (preg_match('//$/i', $numfiles))
 {
   $file_dir_list[] = $numfiles;
 }
 else
 {
   $file_list[] = $numfiles;
 }
      }
    }
    return array('files'=>$file_list, 'dirs'=>$file_dir_list);
  }
  
  private function getTypeList ($bin)
  {
    $array = array(
      array("504B0304", "zip")
    );
    foreach ($array as $v)
    {
      $blen = strlen(pack("H*", $v[0])); //得到文件头标记字节数
      $tbin = substr($bin, 0, intval($blen)); ///需要比较文件头长度
      if(strtolower($v[0]) == strtolower(array_shift(unpack("H*", $tbin))))
      {
 return true;
      }
    }
    return false;
  }
}

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希望本文所述对大家PHP程序设计有所帮助。