From 6af4e08333e8fdb1aaf52a4edb2bf3c9bbfe2265 Mon Sep 17 00:00:00 2001
From: David Monllao <davidm@moodle.com>
Date: Mon, 9 Jul 2018 12:27:25 +0200
Subject: [PATCH] MDL-59599 navigation: Strict zero-position comparision

---
 lib/navigationlib.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/navigationlib.php b/lib/navigationlib.php
index f2f4cb10471..3ec8ccc54f7 100644
--- a/lib/navigationlib.php
+++ b/lib/navigationlib.php
@@ -2733,7 +2733,7 @@ class global_navigation extends navigation_node {
             $gradenode = $coursenode->add(get_string('grades'), $url, self::TYPE_SETTING, null,
                 'grades', new pix_icon('i/grades', ''));
             // If the page type matches the grade part, then make the nav drawer grade node (incl. all sub pages) active.
-            if (strpos($this->page->pagetype, 'grade-') == 0) {
+            if (strpos($this->page->pagetype, 'grade-') === 0) {
                 $gradenode->make_active();
             }
         }