#27431 [Opn->Bgs]: possible leap year strtotime hiccup

ID: 27431 Updated by: derick@php.net Reported By: pettyr at hotmail dot com -Status: Open +Status: Bogus Bug Type: Date/time related Operating System: Linux PHP Version: 4.3.4 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php On the system you say it "works" is PHP 4.1.2, but actually it was a bug in that version. strtotime() follows the GNU semantics (as you can read on php.net/strtotime) and they say: (from: http://www.gnu.org/software/tar/manual/html_chapter/tar_7.html#SEC103) The explicit mention of a day of the week will forward the date (only if necessary) to reach that day of the week in the future. Days of the week may be spelled out in full: Sunday', Monday', Tuesday', Wednesday', Thursday', Friday' or `Saturday'. Days may be abbreviated to their first three letters, optionally followed by a period. The special abbreviations Tues' for Tuesday', `Wednes' for Wednesday' and Thur' or Thurs' for Thursday' are also allowed. A number may precede a day of the week item to move forward supplementary weeks. It is best used in expression like `third monday'. In this context, last day' or next day' is also acceptable; they move one week before or after the day that day by itself would represent. This means that the current behavoir is correct. Previous Comments: ------------------------------------------------------------------------ [2004-02-28 18:50:11] pettyr at hotmail dot com Description: ------------ The clients server is hosted by a third party running debian SMP Apache and PHP 4.3.4. The use of strtotime("next monday") skips monday the 1st and returns monday the 8th when run on Feb. 28th (tomorrow is a leap day.) The servers particulars: [dali]$ uname -a Linux dali 2.4.24-grsec+w+fhs5+gr1913+nfs+++p3+c3+bu+gr0b-v6.182 #1 SMP Mon Jan 5 12:43:44 PST 2004 i686 unknown [dali]$ date Sat Feb 28 14:33:39 PST 2004 Reproduce code: --------------- [dali]$ cat t1.php <? $start = strtotime('next monday'); echo ('Start timestamp: '.$start.'<br>'."\n"); $first = strtotime('first Monday',$start); echo ('"First" Monday: '.date('l, M d Y',$first).'<br>'."\n"); $oneth = strtotime('1 Monday',$start); echo ('"1" Monday: '.date('l, M d Y',$oneth).'<br>'."\n"); $next = strtotime('next Monday',$start); echo ('"Next" Monday: '.date('l, M d Y',$next).'<br>'."\n"); $twoth = strtotime('2 Monday',$start); echo ('"2" Monday: '.date('l, M d Y',$twoth).'<br>'."\n"); $third = strtotime('third Monday',$start); echo ('"Third" Monday: '.date('l, M d Y',$third).'<br>'."\n"); $threeth = strtotime('3 Monday',$start); echo ('"3" Monday: '.date('l, M d Y',$threeth).'<br>'."\n"); ?> Expected result: ---------------- [dali]$ php t1.php Content-type: text/html X-Powered-By: PHP/4.3.4 Start timestamp: 1078732800<br> "Next" Monday: Monday, Mar 01 2004<br> "First" Monday: Monday, Mar 01 2004<br> "1" Monday: Monday, Mar 01 2004<br> "Next" Monday: Monday, Mar 08 2004<br> "2" Monday: Monday, Mar 08 2004<br> "Third" Monday: Monday, Mar 15 2004<br> "3" Monday: Monday, Mar 15 2004<br> [dali]$ Actual result: -------------- [dali]$ php t1.php Content-type: text/html X-Powered-By: PHP/4.3.4 Start timestamp: 1078732800<br> "Next" Monday: Monday, Mar 08 2004<br> "First" Monday: Monday, Mar 08 2004<br> "1" Monday: Monday, Mar 08 2004<br> "Next" Monday: Monday, Mar 15 2004<br> "2" Monday: Monday, Mar 15 2004<br> "Third" Monday: Monday, Mar 22 2004<br> "3" Monday: Monday, Mar 22 2004<br> [dali]$ But, the exact same code run from my system: [root@helios tmp]# uname -a Linux helios 2.4.20-28.7smp #1 SMP Thu Dec 18 11:18:31 EST 2003 i686 unknown [root@helios tmp]# date Sat Feb 28 13:34:08 MST 2004 [root@helios tmp]# php /tmp/t1.php X-Powered-By: PHP/4.1.2 Content-type: text/html Start timestamp: 1078124400<br> "Next" Monday: Monday, Mar 01 2004<br> "First" Monday: Monday, Mar 01 2004<br> "1" Monday: Monday, Mar 01 2004<br> "Next" Monday: Monday, Mar 01 2004<br> "2" Monday: Monday, Mar 08 2004<br> "Third" Monday: Monday, Mar 15 2004<br> "3" Monday: Monday, Mar 15 2004<br> May be related to: Bug #18670 strtotime() bug Submitted: 31 Jul 2002 10:26am EDT Modified: 18 Oct 2003 10:57pm EDT ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=27431&edit=1