From 49580a59d1d41a90746a3b09655730b694d29aa0 Mon Sep 17 00:00:00 2001
From: Pierre Pichet <pichet.pierre@uqam.ca>
Date: Fri, 4 Jun 2010 12:28:45 +0000
Subject: [PATCH] MDL-20296 add isset() tests in function split_old_answer ()
 lines 358-362

---
 question/type/numerical/questiontype.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/question/type/numerical/questiontype.php b/question/type/numerical/questiontype.php
index 0dd1a61d8b500..a4526b1b1a4c6 100644
--- a/question/type/numerical/questiontype.php
+++ b/question/type/numerical/questiontype.php
@@ -356,8 +356,12 @@ function split_old_answer($rawresponse, $units, &$answer ,&$unit ) {
         $rawresponse = str_replace($search, $replace, trim($rawresponse));
         if (preg_match('~^([+-]?([0-9]+(\\.[0-9]*)?|\\.[0-9]+)([eE][-+]?[0-9]+)?)([^0-9].*)?$~',
                 $rawresponse, $responseparts)) {
-            $unit = $responseparts[5] ;
-            $answer = $responseparts[1] ;
+            if(isset($responseparts[5]) ){                       
+                $unit = $responseparts[5] ;
+            }
+            if(isset($responseparts[1]) ){                       
+                $answer = $responseparts[1] ;
+            }
         }
         return ;
     }