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[2010-06-22 13:01 UTC] jason dot woods at blueyonder dot co dot uk
Description:
------------
In version 5.2.13 the following code:
<?php
echo ($now = strtotime('+1 day')) . ' - ' . date('d-m-Y H.i.s', $now) . "\n";
echo ($last = strtotime('last week', $now)) . ' - ' . date('d-m-Y H.i.s', $last) . "\n";
echo ($next = strtotime('+1 week', $last)) . ' - ' . date('d-m-Y H.i.s', $next) . "\n";
?>
Gives the following result:
1277283067 - 23-06-2010 09.51.07
1276678267 - 16-06-2010 09.51.07
1277283067 - 23-06-2010 09.51.07
That is, first line is current time.
Second time is "last week", otherwise known as "-1 week".
Third time is "+1 week", which reverses the change that the "-1 week" did.
However, this changed in 5.3.2 and it now gives the following result:
1277281904 - 23-06-2010 09.31.44
1276504304 - 14-06-2010 09.31.44
1277109104 - 21-06-2010 09.31.44
So it appears "last week" is no longer the equivalent of "-1 week".
Is this a deliberate change or something that was broken in 5.3.2?
I have been unable to test other versions and can only give you the difference from 5.2.13 and 5.3.2.
Thanks.
Test script:
---------------
<?php
echo ($now = strtotime('+1 day')) . ' - ' . date('d-m-Y H.i.s', $now) . "\n";
echo ($last = strtotime('last week', $now)) . ' - ' . date('d-m-Y H.i.s', $last) . "\n";
echo ($next = strtotime('+1 week', $last)) . ' - ' . date('d-m-Y H.i.s', $next) . "\n";
?>
Expected result:
----------------
1277283067 - 23-06-2010 09.51.07
1276678267 - 16-06-2010 09.51.07
1277283067 - 23-06-2010 09.51.07
Actual result:
--------------
1277281904 - 23-06-2010 09.31.44
1276504304 - 14-06-2010 09.31.44
1277109104 - 21-06-2010 09.31.44
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Last updated: Tue Oct 28 04:00:01 2025 UTC |
Bug also shows up in PHP version 5.3.3. It seems to be normalizing the value to the Monday of the target week. For example: strtotime('next week') would be equivalent to strtotime('Monday next week') instead of the expected value of the current time plus the number of seconds in a week.I have a similar problem, but I'm calculating with weeks and am getting inconsistent results. Test script: ------------ <?php echo strftime("%Y %W", strtotime("-1 week", strtotime("2013W01"))) . "\n"; echo strftime("%Y %W", strtotime("+1 week", strtotime("2012W52"))) . "\n"; echo gmdate("Y W", strtotime("2012W53")) . "\n"; echo strftime("%Y %W", strtotime("2012W53")) . "\n"; echo date("Y W", strtotime("2012W53")) . "\n"; ?> Expected result: ---------------- 2012 53 2012 53 2012 53 2012 53 2012 53 Actual result: -------------- 2012 52 2012 53 2012 52 2012 53 2012 01 - this one is particulary interesting... I've tried different timezones, but that does not seem to affect this issue as I get the same output for all timezones. php version: ------------ PHP 5.3.10-1ubuntu3.4 with Suhosin-Patch (cli) (built: Sep 12 2012 18:59:41) Copyright (c) 1997-2012 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies with Xdebug v2.2.1, Copyright (c) 2002-2012, by Derick Rethans