From fc92674d7a8577704a9cbfed7535f08fef6dc59f Mon Sep 17 00:00:00 2001
From: Eloy Lafuente <stronk7@moodle.org>
Date: Thu, 16 Sep 2010 10:07:32 +0000
Subject: [PATCH] MDL-21432 backup - keep any empty() value to offset
 unmodified

---
 backup/util/plan/restore_structure_step.class.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/backup/util/plan/restore_structure_step.class.php b/backup/util/plan/restore_structure_step.class.php
index c1b51ad45d5..26efb6a8305 100644
--- a/backup/util/plan/restore_structure_step.class.php
+++ b/backup/util/plan/restore_structure_step.class.php
@@ -201,8 +201,8 @@ abstract class restore_structure_step extends restore_step {
      */
     public function apply_date_offset($value) {
 
-        // 0 doesn't offset
-        if ($value == 0) {
+        // empties don't offset - zeros (int and string), false and nulls return original value
+        if (empty($value)) {
             return $value;
         }