From 8f58b974b22611db414dee3e0173f10479aea432 Mon Sep 17 00:00:00 2001
From: Rasmus Lerdorf <rasmus@php.net>
Date: Fri, 12 Mar 2004 17:29:52 +0000
Subject: [PATCH] Fix/workaround for http://bugs.php.net/27533

---
 ext/standard/datetime.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/ext/standard/datetime.c b/ext/standard/datetime.c
index 82b06fb6d1..63f127d23b 100644
--- a/ext/standard/datetime.c
+++ b/ext/standard/datetime.c
@@ -189,8 +189,14 @@ void php_mktime(INTERNAL_FUNCTION_PARAMETERS, int gm)
 		/* fall-through */ 
 	case 1: /* hour */
 		val = (*arguments[0])->value.lval; 
-		if (val < 1) { 
-			chgsecs += (1-val) * 60*60; val = 1; 
+		/*
+		   We don't use 1 here to work around problems in some mktime implementations
+		   when it comes to daylight savings time.  Setting it to 2 and working back from
+		   there with the chgsecs offset makes us immune to these problems.
+		   See http://bugs.php.net/27533 for more info.
+		*/
+		if (val < 2) { 
+			chgsecs += (2-val) * 60*60; val = 2; 
 		} 
 		ta->tm_hour = val; 
 		/* fall-through */ 
-- 
2.40.0