From 38dc510b2dba02dba5a60fbc00947aac4fd24aab Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Wed, 29 Feb 2012 06:53:52 -0500
Subject: [PATCH] - Fix warning when properties array is empty

---
 program/include/rcube_imap_cache.php |   26 +++++++++++++++++++++++++-
 1 files changed, 25 insertions(+), 1 deletions(-)

diff --git a/program/include/rcube_imap_cache.php b/program/include/rcube_imap_cache.php
index 1b6a165..655979d 100644
--- a/program/include/rcube_imap_cache.php
+++ b/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)

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