From 26d7de8bfe0b0b7d633a0b182233a8e83e900a03 Mon Sep 17 00:00:00 2001
From: toyomoyo <toyomoyo>
Date: Fri, 26 Oct 2007 02:30:04 +0000
Subject: [PATCH] merged fix for MDL-11902, gradebook formula dereferencing
 problem

---
 lib/grade/grade_item.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/grade/grade_item.php b/lib/grade/grade_item.php
index 4140ad2191..f19414362a 100644
--- a/lib/grade/grade_item.php
+++ b/lib/grade/grade_item.php
@@ -1666,9 +1666,13 @@ class grade_item extends grade_object {
         } else {
             $useditems = array();
         }
-
+        
+        // MDL-11902
+        // unset the value if formula is trying to reference to itself
+        // but array keys does not match itemid
         if (!empty($this->id)) {
-            unset($useditems[$this->id]);
+            $useditems = array_diff($useditems, array($this->id));
+            //unset($useditems[$this->id]);
         }
 
         // prepare formula and init maths library
-- 
2.39.5