From: Derick Rethans <derick@php.net>
Date: Fri, 2 Sep 2005 09:41:08 +0000 (+0000)
Subject: - MF51: Fixed bug #34304 (date() doesn't have a modifier for ISO Week Day).
X-Git-Tag: PRE_NEW_OCI8_EXTENSION~24
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=31f3f81c82af72b05047d677654b7416e98166c7;p=php

- MF51: Fixed bug #34304 (date() doesn't have a modifier for ISO Week Day).
---

diff --git a/ext/date/lib/dow.c b/ext/date/lib/dow.c
index 4b51cf5daf..0c71c2dc6a 100644
--- a/ext/date/lib/dow.c
+++ b/ext/date/lib/dow.c
@@ -31,9 +31,9 @@ static timelib_sll century_value(timelib_sll j)
 	return c < 0 ? c + 7 : c;
 }
 
-timelib_sll timelib_day_of_week(timelib_sll y, timelib_sll m, timelib_sll d)
+static timelib_sll timelib_day_of_week_ex(timelib_sll y, timelib_sll m, timelib_sll d, int iso)
 {
-	timelib_sll c1, y1, m1;
+	timelib_sll c1, y1, m1, dow;
 
 	/* Only valid for Gregorian calendar */
 	if (y < 1753) {
@@ -42,7 +42,23 @@ timelib_sll timelib_day_of_week(timelib_sll y, timelib_sll m, timelib_sll d)
 	c1 = century_value(y / 100);
 	y1 = (y % 100);
 	m1 = timelib_is_leap(y) ? m_table_leap[m] : m_table_common[m];
-	return (c1 + y1 + m1 + (y1 / 4) + d) % 7;
+	dow = (c1 + y1 + m1 + (y1 / 4) + d) % 7;
+	if (iso) {
+		if (dow == 0) {
+			dow = 7;
+		}
+	}
+	return dow;
+}
+
+timelib_sll timelib_day_of_week(timelib_sll y, timelib_sll m, timelib_sll d)
+{
+	return timelib_day_of_week_ex(y, m, d, 0);
+}
+
+timelib_sll timelib_iso_day_of_week(timelib_sll y, timelib_sll m, timelib_sll d)
+{
+	return timelib_day_of_week_ex(y, m, d, 1);
 }
 
                                 /*     jan  feb  mar  apr  may  jun  jul  aug  sep  oct  nov  dec */
diff --git a/ext/date/lib/timelib.h b/ext/date/lib/timelib.h
index 02c8e4542d..ab3507f97b 100644
--- a/ext/date/lib/timelib.h
+++ b/ext/date/lib/timelib.h
@@ -40,6 +40,7 @@
 
 /* From dow.c */
 timelib_sll timelib_day_of_week(timelib_sll y, timelib_sll m, timelib_sll d);
+timelib_sll timelib_iso_day_of_week(timelib_sll y, timelib_sll m, timelib_sll d);
 timelib_sll timelib_day_of_year(timelib_sll y, timelib_sll m, timelib_sll d);
 timelib_sll timelib_daynr_from_weeknr(timelib_sll y, timelib_sll w, timelib_sll d);
 timelib_sll timelib_days_in_month(timelib_sll y, timelib_sll m);
diff --git a/ext/date/php_date.c b/ext/date/php_date.c
index 92be9ecf04..719f017177 100644
--- a/ext/date/php_date.c
+++ b/ext/date/php_date.c
@@ -489,6 +489,7 @@ static char *date_format(char *format, int format_len, int *return_len, timelib_
 			case 'l': length = date_spprintf(&buffer, 32 TSRMLS_CC, "%R", localized ? IS_UNICODE : IS_STRING, dayname_full(timelib_day_of_week(t->y, t->m, t->d), localized)); break;
 			case 'S': length = date_spprintf(&buffer, 32 TSRMLS_CC, "%s", english_suffix(t->d)); break;
 			case 'w': length = date_spprintf(&buffer, 32 TSRMLS_CC, "%d", (int) timelib_day_of_week(t->y, t->m, t->d)); break;
+			case 'N': length = date_spprintf(&buffer, 32 TSRMLS_CC, "%d", (int) timelib_iso_day_of_week(t->y, t->m, t->d)); break;
 			case 'z': length = date_spprintf(&buffer, 32 TSRMLS_CC, "%d", (int) timelib_day_of_year(t->y, t->m, t->d)); break;
 
 			/* week */