ID: 48824
User updated by: brad at omnis dot com
Reported By: brad at omnis dot com
Status: Bogus
Bug Type: Date/time related
Operating System: Linux (CentOS 5.3)
PHP Version: 5.3.0
New Comment:
Just to be clear, because the PHP devs don't want to write correct code
and would rather rely on a broken library, this bug gets marked as bogus
and everyone has to deal with an inferior date function.
To point out that my idea of date math is not incorrect, here is
postgresql (also tested in MySQL and Oracle which provide the same
results):
query: select '01-31-2009 23:59:59'::timestamp + '1 month'::interval
result: 2009-02-28T23:59:59
Previous Comments:
------------------------------------------------------------------------
[2009-08-06 13:35:24] j...@php.net
DateInterval uses the same parser as strtotime().
------------------------------------------------------------------------
[2009-07-07 16:56:59] brad at omnis dot com
>From a brief reading of the source code, dateTime->add() doesn't
*appear* use the underlying strtotime library, so I don't see why this
function should be forced to have the same weakness of that function.
IMO, these date functions would be far more useful if they adhere to
common date manipulation ideals instead of using simple math as they are
currently doing.
As it stands now, the dateTime->add() function cannot be relied upon
for any sort of accounting math and IMO completely defeats the purpose
of specialized dateTime functions.
------------------------------------------------------------------------
[2009-07-07 09:50:48] sjoerd-php at linuxonly dot nl
Thank you for your report.
The issue you report is not a bug. See also bug #43999.
------------------------------------------------------------------------
[2009-07-06 22:24:39] brad at omnis dot com
Description:
------------
dateTime->add(dateInterval) isn't applying proper calendar math when
adding intervals.
Reproduce code:
---------------
$dateTest = new dateTime('2008-01-31',new dateTimeZone("GMT"));
print_r($dateTest);
$dateTest->add(new dateInterval('P1M'));
print_r($dateTest);
Expected result:
----------------
DateTime Object
(
[date] => 2008-01-31 00:00:00
[timezone_type] => 3
[timezone] => UTC
)
DateTime Object
(
[date] => 2008-02-28 00:00:00
[timezone_type] => 3
[timezone] => UTC
)
Actual result:
--------------
DateTime Object
(
[date] => 2008-01-31 00:00:00
[timezone_type] => 3
[timezone] => UTC
)
DateTime Object
(
[date] => 2008-03-02 00:00:00
[timezone_type] => 3
[timezone] => UTC
)
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=48824&edit=1
