From 28de2a27108c609963226fc5f29814d13ca93b6c Mon Sep 17 00:00:00 2001
From: Julio Montoya <gugli100@gmail.com>
Date: Fri, 16 Nov 2018 15:03:25 +0100
Subject: [PATCH] Minor - fix php warning

---
 main/inc/lib/attendance.lib.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/main/inc/lib/attendance.lib.php b/main/inc/lib/attendance.lib.php
index aaa437c451..5bd8183f6a 100755
--- a/main/inc/lib/attendance.lib.php
+++ b/main/inc/lib/attendance.lib.php
@@ -154,8 +154,9 @@ class Attendance
 
         while ($attendance = Database::fetch_row($res)) {
             $student_param = '';
-            if (api_is_drh() && $_GET['student_id']) {
-                $student_param = '&student_id='.intval($_GET['student_id']);
+            $studentRequestId = isset($_GET['student_id']) ? (int) $_GET['student_id'] : 0;
+            if (api_is_drh() && !empty($studentRequestId)) {
+                $student_param = '&student_id='.$studentRequestId;
             }
 
             $session_star = '';