#45661 [Opn]: Error in mktime when omitting day

ID: 45661 User updated by: frozenfire at thefrozenfire dot com Reported By: frozenfire at thefrozenfire dot com Status: Open Bug Type: Date/time related Operating System: Windows XP SP2 PHP Version: 5.2.6 New Comment: // Working code. Produces intuitive output. // Original bug report used 0 as 5th param for($i=1; $i<13; $i++) echo date('M', mktime(0, 0, 0, $i, 1))."\n"; Previous Comments: ------------------------------------------------------------------------ [2008-07-31 00:47:56] frozenfire at thefrozenfire dot com Description: ------------ There is a bug in mktime, where omission of the day parameter causes some issues. Most notably, when attempting to iterate through months. See the reproduction code for a better explanation. Reproduce code: --------------- // Bugged code. Produces "Mar" twice. for($i=1; $i<13; $i++) echo date('M', mktime(0, 0, 0, $i))."\n"; // Working code. Produces intuitive output. for($i=1; $i<13; $i++) echo date('M', mktime(0, 0, 0, $i, 0))."\n"; Expected result: ---------------- Jan Feb Mar Apr Jun Jul Aug Sep Oct Nov Dec Actual result: -------------- Jan Mar Mar Apr Jun Jul Aug Sep Oct Nov Dec ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=45661&edit=1