From 7bb254e27fd4e92e1adc0557b250bb4ac8504210 Mon Sep 17 00:00:00 2001
From: Roland Gruber <post@rolandgruber.de>
Date: Thu, 10 Jun 2010 15:34:52 +0000
Subject: [PATCH] fixed PHP notice

---
 lam/lib/cache.inc | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lam/lib/cache.inc b/lam/lib/cache.inc
index eb7d5736..abfbc658 100644
--- a/lam/lib/cache.inc
+++ b/lam/lib/cache.inc
@@ -183,9 +183,13 @@ class cache {
 	* @return array list of variables to save
 	*/
 	function __sleep() {
-		$this->ldapcache = $_SESSION['ldap']->encrypt(serialize($this->ldapcache));
+		$attrs = array("attributes", "time");
+		if (isset($this->ldapcache)) {
+			$this->ldapcache = $_SESSION['ldap']->encrypt(serialize($this->ldapcache));
+			$attrs[] = 'ldapcache';
+		}
 		// define which attributes to save
-		return array("ldapcache", "attributes", "time");
+		return $attrs;
 	}
 	
 	/**