Edit report at https://bugs.php.net/bug.php?id=61955&edit=1
ID: 61955
Comment by: floridia at gmail dot com
Reported by: php at arjanonline dot net
Summary: Adding DateInterval to DateTime adds 1 additional
hour
Status: Assigned
Type: Bug
Package: Date/time related
Operating System: Linux / Mac
PHP Version: 5.3.12
Assigned To: derick
Block user comment: N
Private report: N
New Comment:
Related with DST Change:
https://bugs.php.net/bug.php?id=51051
Previous Comments:
------------------------------------------------------------------------
[2015-03-18 19:31:01] floridia at gmail dot com
Similiar issue:
The following code doesn't work with particular date 2015-02-21 23:45:00 when trying to add 15
minutes...
$date1 = new DateTime('2015-02-21 23:45:00');
$interval = new DateInterval('PT15M');
print_r($date1);
$date1->add($interval);
print_r($date1);
Output
DateTime Object
(
[date] => 2015-02-21 23:45:00.000000
[timezone_type] => 3
[timezone] => America/Sao_Paulo
)
DateTime Object
(
[date] => 2015-02-21 23:00:00.000000
[timezone_type] => 3
[timezone] => America/Sao_Paulo
)
Expected Output
DateTime Object
(
[date] => 2015-02-22 00:00:00.000000
[timezone_type] => 3
[timezone] => America/Sao_Paulo
)
------------------------------------------------------------------------
[2013-05-05 12:10:19] jack at jtom dot me
This bug is still up. I'm experiencing it on PHP 5.4.3 and Windows 8 x64 platform.
I had to have 'Europe/Warsaw' set as the default timezone to make the bug occur.
Currently I managed to handle this bug by switching the default timezone to UTC
every time I make date->add/sub/modify , but it's definitely annoying :(
------------------------------------------------------------------------
[2012-11-24 01:15:25] whistl0r+php at googlemail dot com
I think this bug was introduced with http://svn.php.net/viewvc/?view=revision&revision=319767
------------------------------------------------------------------------
[2012-11-24 00:13:09] whistl0r+php at googlemail dot com
This bug seems to be still present in PHP 5.3.19. My test script:
<?php
// The local system is set to Europe/Berlin timezone, so set it for PHP, too:
date_default_timezone_set( 'Europe/Berlin');
echo 'Current date: ' . date('c') . PHP_EOL;
// Now, we are switching to UTC...
date_default_timezone_set( 'UTC');
$timezone = new DateTimeZone( 'UTC' );
$datetime = new DateTime( null, $timezone );
$datetime->setTime( 00, 00, 00 );
$datetime->add( new DateInterval( 'P1D' ) );
// Output
echo 'mktime(): ' . ( mktime( 23, 59, 59 ) + 1 ) . PHP_EOL;
echo 'gmmktime(): ' . ( gmmktime( 23, 59, 59 ) + 1 ) . PHP_EOL;
echo 'datetime(): ' . $datetime->getTimestamp() . PHP_EOL;
echo 'time(): ' . time() . PHP_EOL;
echo 'microtime(): ' . microtime( true ) . PHP_EOL;
echo 'Used TZ: ' . date_default_timezone_get() . PHP_EOL;
?>
I run this test script at 2012-11-24T00:00:00+01:00. This is my output:
Current date: 2012-11-24T00:00:00+01:00
mktime(): 1353715200
gmmktime(): 1353715200
datetime(): 1353715200
time(): 1353711600
microtime(): 1353711600.7557
Used TZ: UTC
I am expecting that at least the DateTime value should be equal to time(), because both functions
should represent a UNIX timestamp (which is per definition UTC).
But I am also not sure if the gmmktime() *and* mktime() should be equal... and I don't
understand the 3600 offset at all - remember, we set UTC timezone before...
------------------------------------------------------------------------
[2012-09-11 19:13:10] chris dot baker dot gr at gmail dot com
To amend my earlier comment: my repro attempts show that if I create an instance of DateTime by
passing a string to the constructor, everything works fine. If I use a timestamp in combination with
DateTime::createFromFormat, I see the bug affect the results
Use of a string
-------------------------
$start = new DateTime('09/13/2012 7:00pm');
$end = new DateTime('09/13/2012 8:00pm');
$interval = DateInterval::createFromDateString('30 minutes');
// expected, 1 hours, 0 minutes, get 1 hours, 0 minutes
$diff = $start->diff($end);
print 'Diff: '.$diff->h.' hours, '.$diff->i.'
minutes'."\n";
$end->add($interval);
$diff = $start->diff($end);
// ecpected: 1 hours, 30 minutes, get 1 hours, 30 minutes
print "\n".'Diff after interval: '.$diff->h.' hours,
'.$diff->i.' minutes';
Use of a timestamp
-------------------------
$start = DateTime::createFromFormat('U', 1347577200);
$end = DateTime::createFromFormat('U', 1347580800);
$interval = DateInterval::createFromDateString('30 minutes');
// expected, 1 hours, 0 minutes, get 1 hours, 0 minutes
$diff = $start->diff($end);
print 'Diff: '.$diff->h.' hours, '.$diff->i.'
minutes'."\n";
$end->add($interval);
$diff = $start->diff($end);
// ecpected: 1 hours, 30 minutes, get 2 hours, 30 minutes
print "\n".'Diff after interval: '.$diff->h.' hours,
'.$diff->i.' minutes';
http://3v4l.org/fivbW
The extra one hour makes less sense considering that my server timezone is -5 UTC -- not that it
makes sense for DateInterval to be sensitive to timezone!
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