Bug #52154 [Opn->Dup]: mktime(0,0,0,0,0,0) returns a timestamp instead of false

Edit report at http://bugs.php.net/bug.php?id=52154&edit=1 ID: 52154 Updated by: salathe@php.net Reported by: j dot logemann at qmulus dot nl Summary: mktime(0,0,0,0,0,0) returns a timestamp instead of false -Status: Open +Status: Duplicate Type: Bug Package: Date/time related Operating System: Windows 7 enterprise PHP Version: 5.3.2 New Comment: This is expected behaviour. Using 0 for the year maps, as documented, to the year 2000; 0 for the month means December of the previous year (December 1999), 0 for the day-of-month means the last day of the previous month (30th November 1999). Therefore your date values do not map to "0000-00-00" as you expected, but correctly as you found to "1999-11-30 00:00:00" -- the arguments are not invalid, so FALSE is not returned. Duplicate of bug #36027 Previous Comments: ------------------------------------------------------------------------ [2010-06-23 10:27:35] j dot logemann at qmulus dot nl Description: ------------ When you try to get the timestamp for day 0 of month 0 of the year 0, php returns 943916400 instead of false. It should return false because the input is clearly an invalid date and "0000-00-00" is not equal to "1999-11-30" Test script: --------------- <?php echo mktime(0,0,0,0,0,0); Expected result: ---------------- According to the documentation: "mktime() returns the Unix timestamp of the arguments given. If the arguments are invalid, the function returns FALSE (before PHP 5.1 it returned -1)." Therefore the output should be FALSE and not 943916400 Actual result: -------------- The actual result = 943916400 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=52154&edit=1