PHP 知识管理系统（基于树结构的知识管理系统）, 英文原版的PHP源码。

								/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */								/**				 * HTTP::Download::Archive				 * 				 * PHP versions 4 and 5				 *				 * @category   HTTP				 * @package    HTTP_Download				 * @author     Michael Wallner 				 * @copyright  2003-2005 Michael Wallner				 * @license    BSD, revisewd				 * @version    CVS: $Id$				 * @link       http://pear.php.net/package/HTTP_Download				 */								/**				 * Requires HTTP_Download				 */				require_once 'HTTP/Download.php';								/**				 * Requires System				 */				require_once 'System.php';								/** 				 * HTTP_Download_Archive				 * 				 * Helper class for sending Archives.				 *				 * @access   public				 * @version  $Revision$				 */				class HTTP_Download_Archive				{				    /**				     * Send a bunch of files or directories as an archive				     * 				     * Example:				     * 				     *  require_once 'HTTP/Download/Archive.php';				     *  HTTP_Download_Archive::send(				     *      'myArchive.tgz',				     *      '/var/ftp/pub/mike',				     *      HTTP_DOWNLOAD_BZ2,				     *      '',				     *      '/var/ftp/pub'				     *  );				     * 				     *				     * @see         Archive_Tar::createModify()				     * @static				     * @access  public				     * @return  mixed   Returns true on success or PEAR_Error on failure.				     * @param   string  $name       name the sent archive should have				     * @param   mixed   $files      files/directories				     * @param   string  $type       archive type				     * @param   string  $add_path   path that should be prepended to the files				     * @param   string  $strip_path path that should be stripped from the files				     */				    function send($name, $files, $type = HTTP_DOWNLOAD_TGZ, $add_path = '', $strip_path = '')				    {				        $tmp = System::mktemp();				        				        switch ($type = strToUpper($type))				        {				            case HTTP_DOWNLOAD_TAR:				                include_once 'Archive/Tar.php';				                $arc = &new Archive_Tar($tmp);				                $content_type = 'x-tar';				            break;								            case HTTP_DOWNLOAD_TGZ:				                include_once 'Archive/Tar.php';				                $arc = &new Archive_Tar($tmp, 'gz');				                $content_type = 'x-gzip';				            break;								            case HTTP_DOWNLOAD_BZ2:				                include_once 'Archive/Tar.php';				                $arc = &new Archive_Tar($tmp, 'bz2');				                $content_type = 'x-bzip2';				            break;								            case HTTP_DOWNLOAD_ZIP:				                include_once 'Archive/Zip.php';				                $arc = &new Archive_Zip($tmp);				                $content_type = 'x-zip';				            break;				            				            default:				                return PEAR::raiseError(				                    'Archive type not supported: ' . $type,				                    HTTP_DOWNLOAD_E_INVALID_ARCHIVE_TYPE				                );				        }				        				        if ($type == HTTP_DOWNLOAD_ZIP) {				            $options = array(   'add_path' => $add_path, 				                                'remove_path' => $strip_path);				            if (!$arc->create($files, $options)) {				                return PEAR::raiseError('Archive creation failed.');				            }				        } else {				            if (!$e = $arc->createModify($files, $add_path, $strip_path)) {				                return PEAR::raiseError('Archive creation failed.');				            }				            if (PEAR::isError($e)) {				                return $e;				            }				        }				        unset($arc);				        				        $dl = &new HTTP_Download(array('file' => $tmp));				        $dl->setContentType('application/' . $content_type);				        $dl->setContentDisposition(HTTP_DOWNLOAD_ATTACHMENT, $name);				        return $dl->send();				    }				}				?>