ID: 30532
Comment by: gcon820 at yahooihatespam dot com
Reported By: rbro at hotmail dot com
Status: Open
Bug Type: Date/time related
Operating System: Linux
PHP Version: 4.3.9
New Comment:
I have experienced this problem with regards to daylight savings time
as well. I print a calendar dynamically using strtotime, and on October
31, 2004 (the day of daylight savings), it printed October, December,
December, January, March, March, May, May, July, July, August, October,
instead of the months of October 2004-October 2005 consecutively. I
printed out the value of print_r(getdate(strtotime("+$offset month",
$start_date))), with $start_date being getdate(mktime())[0], and
$offset being a number between 0 and 11. For each case, the [0] value
printed out was different and correct. All other information in the
getdate() array was incorrect, however.
Hope this helps.
gcon
Previous Comments:
------------------------------------------------------------------------
[2004-10-31 02:15:12] jack dot littleton at gmail dot com
I've recently experienced this same problem in the following way:
On Friday, October 29, 2004 I sent strtotime the value ('Monday'),
should have returned the data for Monday, November 1, 2004, but instead
returned Sunday, October 31, 2004. I have never had a similar problem
with strtotime when the span of the current time to the target time did
NOT cross the daylight savings time boundary.
(Further: this was on Windows XP SP1 using Apache 2 and PHP 4.3.5)
------------------------------------------------------------------------
[2004-10-22 22:32:27] rbro at hotmail dot com
Further information: The following script does give the expected
results:
<?php
echo date('Y-m-d H:i:s', strtotime('+1 hour',
strtotime('2004-10-31')))."\n";
echo date('Y-m-d H:i:s', strtotime('+2 hours',
strtotime('2004-10-31')))."\n";
echo date('Y-m-d H:i:s', strtotime('+3 hours',
strtotime('2004-10-31')))."\n";
?>
of
2004-10-31 01:00:00
2004-10-31 01:00:00
2004-10-31 02:00:00
So now I believe the issue is that the following 2 statements give
different output though they should have the same output:
<?php
echo strtotime('2004-10-31 +2 hours')."\n";
echo strtotime('+2 hours', strtotime('2004-10-31'))."\n";
?>
------------------------------------------------------------------------
[2004-10-22 17:33:21] rbro at hotmail dot com
Description:
------------
In the US, Daylight Savings Time ends on October 31, 2004 at 2am where
clocks are then reset back to 1am. I am in the Eastern time zone. If
I run the following script where I'm adding 1 hour, 2 hours, and 3
hours to the date 2004-10-31, I'm getting different results from
including EDT in the date or not, when I thought that strtotime()
defaults to the local timezone.
Reproduce code:
---------------
<?php
echo date('Y-m-d H:i:s', strtotime('2004-10-31 EDT +1 hour'))."\n";
echo date('Y-m-d H:i:s', strtotime('2004-10-31 EDT +2 hours'))."\n";
echo date('Y-m-d H:i:s', strtotime('2004-10-31 EDT +3 hours'))."\n";
echo "\n";
echo date('Y-m-d H:i:s', strtotime('2004-10-31 +1 hour'))."\n";
echo date('Y-m-d H:i:s', strtotime('2004-10-31 +2 hours'))."\n";
echo date('Y-m-d H:i:s', strtotime('2004-10-31 +3 hours'))."\n";
?>
Expected result:
----------------
2004-10-31 01:00:00
2004-10-31 01:00:00
2004-10-31 02:00:00
2004-10-31 01:00:00
2004-10-31 01:00:00
2004-10-31 02:00:00
Actual result:
--------------
2004-10-31 01:00:00
2004-10-31 01:00:00
2004-10-31 02:00:00
2004-10-31 01:00:00
2004-10-31 02:00:00
2004-10-31 03:00:00
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=30532&edit=1
