From 9488b6f3a46afc3ca06ddf9fbbeacc6a5182c73f Mon Sep 17 00:00:00 2001
From: Jun Pataleta <jun@moodle.com>
Date: Fri, 8 Jan 2016 16:57:32 +0800
Subject: [PATCH] MDL-52649 user: Add check for potentially undefined variables

---
 user/index.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/user/index.php b/user/index.php
index bb6e79501b0..5836d09f1fd 100644
--- a/user/index.php
+++ b/user/index.php
@@ -512,12 +512,12 @@ if ($roleid > 0) {
     $a->role = $rolenames[$roleid];
     $heading = format_string(get_string('xuserswiththerole', 'role', $a));
 
-    if ($currentgroup and $group) {
+    if ($currentgroup and !empty($group)) {
         $a->group = $group->name;
         $heading .= ' ' . format_string(get_string('ingroup', 'role', $a));
     }
 
-    if ($accesssince) {
+    if ($accesssince && !empty($timeoptions[$accesssince])) {
         $a->timeperiod = $timeoptions[$accesssince];
         $heading .= ' ' . format_string(get_string('inactiveformorethan', 'role', $a));
     }