Bug #26565 [Csd]: strtotime('this month') resolving to the wrong month?

Edit report at http://bugs.php.net/bug.php?id=26565&edit=1 ID: 26565 Updated by: rasmus@php.net Reported by: michaelw at darkhorse dot com Summary: strtotime('this month') resolving to the wrong month? Status: Closed Type: Bug Package: Date/time related Operating System: Mac OS X 10.2.x PHP Version: 4.3.4 Assigned To: derick Block user comment: N Private report: N New Comment: To the people adding comments about +-1 month here. This really isn't a bug. Read the link Derick provided: http://derickrethans.nl/obtaining-the-next-month-in-php.html It doesn't matter if you are going ahead 1 month or back 1 month. The logic is the same. It tries to find Feb.30 which doesn't exist, so instead of walking backwards to Feb.28 it assumes you meant 2 days after Feb.28 which is obviously in March. Like I said in the comments at that link, for better or worse, this is the UNIX convention for time manipulation. Most UNIX tools will behave exactly like this. In order to do this correctly, you should be specifying a day in the month as Derick suggests in that post. Previous Comments: ------------------------------------------------------------------------ [2011-03-30 22:01:12] rbredlau at broadlux dot com I am having the exact same error as fortizma. <?php $runtm = time(); $month = strtotime( '-1 month', $runtm ); $ts = date( 'n/j/Y g:i a', $runtm ); $ts2 = date( 'n/j/Y g:i a', $month ); $last = date( 'Y-m-F', $month ); echo $ts . PHP_EOL . $ts2 . PHP_EOL . $last . PHP_EOL . PHP_EOL; Produces: 3/30/2011 12:56 pm 3/2/2011 12:56 pm 2011-03-March PHP 5.2.14-0.dotdeb.0 with Suhosin-Patch 0.9.7 (cli) (built: Jul 25 2010 08:53:19) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2010 Zend Technologies with NuSphere PhpExpress v2.0.3, Copyright (c) 2002-2009 NuSphere Corp., by Dmitri Dmitrienko with DBG v3.9.2, (C) 2000,2010, by Dmitri Dmitrienko cat /etc/issue Ubuntu 9.04 \n \l ------------------------------------------------------------------------ [2011-03-30 20:28:48] fortizma at gmail dot com Derik, thanks for your reply, but in my last reply, I'm talking about last month, no next month. Thanks in advance. ------------------------------------------------------------------------ [2011-03-30 19:48:40] derick@php.net http://derickrethans.nl/obtaining-the-next-month-in-php.html ------------------------------------------------------------------------ [2011-03-30 19:45:35] fortizma at gmail dot com Based on the current date which is march 30, 2011. if I try echo date('Y-m-d', strtotime('-1 months')); I would expect 2011-02-28, but what I'm getting is 2011-03-02. Do this occur due to 2011 is not a leap year? ------------------------------------------------------------------------ [2003-12-10 09:06:48] sniper@php.net This bug has been fixed in CVS. In case this was a PHP problem, snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. In case this was a documentation problem, the fix will show up soon at http://www.php.net/manual/. In case this was a PHP.net website problem, the change will show up on the PHP.net site and on the mirror sites in short time. Thank you for the report, and for helping us make PHP better. ------------------------------------------------------------------------ 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 http://bugs.php.net/bug.php?id=26565 -- Edit this bug report at http://bugs.php.net/bug.php?id=26565&edit=1