ID: 34304
User updated by: sandved at gmail dot com
-Summary: Date('w') do not return correct number for sunday
Reported By: sandved at gmail dot com
-Status: Bogus
+Status: Open
Bug Type: Date/time related
Operating System: *
PHP Version: 5.0.4
New Comment:
It is possible to add a new (ISO) week day parameter?
Previous Comments:
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[2005-08-30 12:42:22] sandved at gmail dot com
Is it possible then to add a (ISO day) parameter which return 1 for
monday, 2 for tuesday, ..., 6 for saturday and 7 for sunday?
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[2005-08-30 12:28:11] [EMAIL PROTECTED]
It's returning what it's documented to return. (it is not some ISO
standard it complies to but the PHP manual)
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[2005-08-30 12:11:25] sandved at gmail dot com
Description:
------------
The Date function have a day of the week parameter 'w'
This parameter should return 7 for sundays, not 0 to be ISO 8601
compilant
Why
http://se.php.net/date :
> w Numeric representation of the day of the week
> 0 (for Sunday) through 6 (for Saturday)
This week parameter do not return leading zeros when used like
Date('o\WWw'), Date('o\-\WW\-w')
According to ISO 8601 monday is the first day of the week and sunday
the last, numbereded 1 to 7
(Section 5.2.3 Week date states
In expressions of week dates
- day of the week is represented by one decimal digit. Monday shall be
identified as day [1] of any calendar
week, and subsequent days of the same week shall be numbered in
ascending sequence to Sunday (day [7]).) like:
Date - Week (extended format YYYY-Www-D)
---------- - ----------
1997-12-29 - 1998-W01-1
1998-01-04 - 1998-W01-7
1998-01-01 - 1998-W01-4
1998-12-31 - 1998-W53-4
1992-01-01 - 1992-W01-3
1992-02-29 - 1992-W09-6
1992-12-31 - 1992-W53-4
1975-01-01 - 1975-W01-3
1975-12-28 - 1975-W52-7
1975-12-29 - 1976-W01-1
Sources
Here's a copy of the latest free online copy
http://www.pvv.org/~nsaa/8601v2000.pdf, only minor changes in the text
in the latest version from ISO - also see
http://en.wikipedia.org/wiki/ISO_8601.
Reproduce code:
---------------
Echo Date('o\-\WW\-w', strtotime('2 January 2005'))
Date('o\-\WW\-w', strtotime('9 January 2005'));
Expected result:
----------------
2004-W53-7
2005-W01-7
Actual result:
--------------
2004-W53-0
2005-W1-0 (leading zeros in week fixed in bug report
http://bugs.php.net/?id=34302)
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