From 2b214bc1dc2283a22e54eab5769b837df558c487 Mon Sep 17 00:00:00 2001
From: mjollnir_ <mjollnir_>
Date: Sun, 27 Jan 2008 20:05:49 +0000
Subject: [PATCH] Merged from MOODLE_19_STABLE: MDL-13161 - auth/db - suppress
 php warning when there are no users using db auth

---
 auth/db/auth.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/auth/db/auth.php b/auth/db/auth.php
index 2da10f05bf..239df97e14 100644
--- a/auth/db/auth.php
+++ b/auth/db/auth.php
@@ -334,10 +334,12 @@ class auth_plugin_db extends auth_plugin_base {
 
         // simplify down to usernames
         $usernames = array();
-        foreach ($users as $user) {
-            array_push($usernames, $user->username);
+        if (!empty($users)) {
+            foreach ($users as $user) {
+                array_push($usernames, $user->username);
+            }
+            unset($users);
         }
-        unset($users);
 
         $add_users = array_diff($userlist, $usernames);
         unset($usernames);
-- 
2.39.5