From 5f9fc4e62532d8b161c2704e519de546c53e32f3 Mon Sep 17 00:00:00 2001
From: jmontoyaa <gugli100@gmail.com>
Date: Mon, 7 Nov 2016 15:05:44 +0100
Subject: [PATCH] If time negative return 0 see BT#11947

---
 main/inc/lib/api.lib.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/main/inc/lib/api.lib.php b/main/inc/lib/api.lib.php
index 4e5913d7c74..50007564404 100644
--- a/main/inc/lib/api.lib.php
+++ b/main/inc/lib/api.lib.php
@@ -7493,6 +7493,12 @@ function api_format_time($time, $originFormat = 'php')
     $mins = ($time % 3600) / 60;
     $secs = ($time % 60);
 
+    if ($time < 0) {
+        $hours = 0;
+        $mins = 0;
+        $secs = 0;
+    }
+
     if ($originFormat == 'js') {
         $formattedTime = trim(sprintf("%02d : %02d : %02d", $hours, $mins, $secs));
     } else {