- Fix warning when properties array is empty

alecpl

2012-02-29 38dc510b2dba02dba5a60fbc00947aac4fd24aab

 program/include/rcube_imap_cache.php

@@ -6,7 +6,10 @@
 |                                                                       |
 | This file is part of the Roundcube Webmail client                     |
 | Copyright (C) 2005-2011, The Roundcube Dev Team                       |
 | Licensed under the GNU GPL                                            |
 |                                                                       |
 | Licensed under the GNU General Public License version 3 or            |
 | any later version with exceptions for skins & plugins.                |
 | See the README file for a full license statement.                     |
 |                                                                       |
 | PURPOSE:                                                              |
 |   Caching of IMAP folder contents (messages and index)                |
@@ -596,6 +599,27 @@


    /**
     * Delete cache entries older than TTL
     *
     * @param string $ttl  Lifetime of message cache entries
     */
    function expunge($ttl)
    {
        // get expiration timestamp
        $ts = get_offset_time($ttl, -1);

        $this->db->query("DELETE FROM ".get_table_name('cache_messages')
              ." WHERE changed < " . $this->db->fromunixtime($ts));

        $this->db->query("DELETE FROM ".get_table_name('cache_index')
              ." WHERE changed < " . $this->db->fromunixtime($ts));

        $this->db->query("DELETE FROM ".get_table_name('cache_thread')
              ." WHERE changed < " . $this->db->fromunixtime($ts));
    }


    /**
     * Fetches index data from database
     */
    private function get_index_row($mailbox)