Edit report at https://bugs.php.net/bug.php?id=49115&edit=1
ID: 49115
Comment by: anto dot justus at gmail dot com
Reported by: php at davidstockton dot com
Summary: date('M', strtotime('February')) prints "March"
Status: Bogus
Type: Bug
Package: Date/time related
Operating System: Windows XP/Linux
PHP Version: 5.2.10
Block user comment: N
Private report: N
New Comment:
hi..
You have used date("M", mktime(0, 0, 0, $i))
In this issue there is no initialization of date so it took 30 as default initialize date it will
check for the availability of the date, if it is available it will consider the month or it will not
take month in account.
for example you can check the diff with using :
date("M", mktime(0, 0, 0, $i,[2011])); it will consider only the month which have 30 and
more days - default [30]
date("M", mktime(0, 0, 0, $i,30,[2011])); it will consider only the month which have 30
and more days
date("M", mktime(0, 0, 0, $i,31,[2011])); it will consider only the month which have 31
and more days
date("M", mktime(0, 0, 0, $i,1,[2011])); it will consider only the month which have 1 and
more days
The calendar has 12 months with 30 or 31 days except February. So february is exception in this
case. ( february have less than 30 days)
The possible solution will be of using 1 as the 5th argument to initialize the month.
you need to make a not of initializing the month to 1, since 1st is common to all the 12 months.
you can use :
date("M", mktime(0, 0, 0, $i,1,[2011]));
year is optional it will take current year as default.
Previous Comments:
------------------------------------------------------------------------
[2009-07-31 14:58:54] php at davidstockton dot com
Sorry to belabor the point, but why is "February 2009" reset to February 1, 2009 (since
the day is not provided), but "February" is not? In that case the current year is used
(not provided) and the current day is used (also not provided). In the February 2009 example the
day is not provided, but the day is reset to 1 which I think is a reasonable adjustment. I would
think that February with an implied year matching the current year should behave the same as
February with an implied year (no provided year).
Thank you again.)
------------------------------------------------------------------------
[2009-07-31 08:34:03] derick@php.net
Yup, that's correct. With the "month year" format, we reset the day to 1.
------------------------------------------------------------------------
[2009-07-31 03:55:41] php at davidstockton dot com
I guess my above assumption is not correct either which means there's something else going on
that I don't understand. For example,
<?php
echo date('F', strtotime('February 2009')), "\n";
echo date('F', strtotime('February 1')), "\n";
?>
Both lines output the expected "February" even though I've not specified a day of the
month in the first scenario but the timestamp given by strtotime corresponds to February 1, 2009.
If the function fills in the defaults from the current date, I'd expect to still see March for
the 1st line.)
------------------------------------------------------------------------
[2009-07-31 02:57:44] php at davidstockton dot com
Interesting. So I'd guess that if I run this same test tomorrow, I'll be seeing
January
March
March
May
May
July
July
August
October
October
December
December
I think I understand why it would be doing this, but it still seems pretty weird. Is the assumption
that strtotime fills in every part of the date/time with whatever the current time happens to be
correct?)
------------------------------------------------------------------------
[2009-07-30 23:29:17] rasmus@php.net
date() is doing what it is supposed to. You are passing it a timestamp in March.
strtotime() returns a timestamp in March because you have not been specific enough. When you just
give it a month and nothing else, it makes some assumptions. For example, it takes the current year
and the current date. So, you are asking strtotime for February 30, 2009 which actually
doesn't exist since February doesn't have 30 days, so it gives you the closest match which
is March 2nd.
Not a bug. You just have to be more explicit. Like "February 1"
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
https://bugs.php.net/bug.php?id=49115
--
Edit this bug report at https://bugs.php.net/bug.php?id=49115&edit=1