From 542819a17f093c64dd98a3d887b8b5794b7a3bf8 Mon Sep 17 00:00:00 2001
From: Dan Marsden <dan@danmarsden.com>
Date: Tue, 8 Sep 2020 10:53:26 +1200
Subject: [PATCH] Use api function for limit. Fix #459

---
 attendance.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/attendance.php b/attendance.php
index c1c1003..3104624 100644
--- a/attendance.php
+++ b/attendance.php
@@ -59,8 +59,8 @@ if ($attforsession->rotateqrcode == 1) {
     } else {
         // Check password.
         $sql = 'SELECT * FROM {attendance_rotate_passwords}'.
-            ' WHERE attendanceid = ? AND expirytime > ? ORDER BY expirytime ASC LIMIT 2';
-        $qrpassdatabase = $DB->get_records_sql($sql, ['attendanceid' => $id, time() - $attconfig->rotateqrcodeexpirymargin]);
+            ' WHERE attendanceid = ? AND expirytime > ? ORDER BY expirytime ASC';
+        $qrpassdatabase = $DB->get_records_sql($sql, ['attendanceid' => $id, time() - $attconfig->rotateqrcodeexpirymargin], 0, 2);
 
         foreach ($qrpassdatabase as $qrpasselement) {
             if ($qrpass == $qrpasselement->password) {