From e83bcc1050ab250aaeaa2c31371028a74509e14d Mon Sep 17 00:00:00 2001
From: Shamim Rezaie <support@foodle.org>
Date: Thu, 3 Dec 2015 17:58:21 +1100
Subject: [PATCH] MDL-52380 mod_forum: Non-Gregorian dates in forum advance
 search

Convert the fromdate and todate date parts to Gregorian before passing them to make_timestamp
---
 lib/moodlelib.php    | 2 +-
 mod/forum/search.php | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index c26d8c6815b..e9598eb71ca 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -2026,7 +2026,7 @@ function get_user_preferences($name = null, $default = null, $user = null) {
 // FUNCTIONS FOR HANDLING TIME.
 
 /**
- * Given date parts in user time produce a GMT timestamp.
+ * Given Gregorian date parts in user time produce a GMT timestamp.
  *
  * @package core
  * @category time
diff --git a/mod/forum/search.php b/mod/forum/search.php
index 7784eb0daad..046ffa68451 100644
--- a/mod/forum/search.php
+++ b/mod/forum/search.php
@@ -46,7 +46,9 @@ $fromyear = optional_param('fromyear', 0, PARAM_INT);      // Starting date
 $fromhour = optional_param('fromhour', 0, PARAM_INT);      // Starting date
 $fromminute = optional_param('fromminute', 0, PARAM_INT);      // Starting date
 if ($timefromrestrict) {
-    $datefrom = make_timestamp($fromyear, $frommonth, $fromday, $fromhour, $fromminute);
+    $calendartype = \core_calendar\type_factory::get_calendar_instance();
+    $gregorianfrom = $calendartype->convert_to_gregorian($fromyear, $frommonth, $fromday);
+    $datefrom = make_timestamp($gregorianfrom['year'], $gregorianfrom['month'], $gregorianfrom['day'], $fromhour, $fromminute);
 } else {
     $datefrom = optional_param('datefrom', 0, PARAM_INT);      // Starting date
 }
@@ -58,7 +60,9 @@ $toyear = optional_param('toyear', 0, PARAM_INT);      // Ending date
 $tohour = optional_param('tohour', 0, PARAM_INT);      // Ending date
 $tominute = optional_param('tominute', 0, PARAM_INT);      // Ending date
 if ($timetorestrict) {
-    $dateto = make_timestamp($toyear, $tomonth, $today, $tohour, $tominute);
+    $calendartype = \core_calendar\type_factory::get_calendar_instance();
+    $gregorianto = $calendartype->convert_to_gregorian($toyear, $tomonth, $today);
+    $dateto = make_timestamp($gregorianto['year'], $gregorianto['month'], $gregorianto['day'], $tohour, $tominute);
 } else {
     $dateto = optional_param('dateto', 0, PARAM_INT);      // Ending date
 }
-- 
2.17.1