Edit report at http://bugs.php.net/bug.php?id=46597&edit=1
ID: 46597 Updated by: [email protected] Reported by: fsb at thefsb dot org Summary: Inconsistent return values for strtotime('0000-00-00') Status: Bogus Type: Bug Package: Date/time related Operating System: * PHP Version: 5.*, 6CVS (2009-04-30) New Comment: Sure, but strtotime() has long handled invalid month and day values the same way as mktime() by effectively "rounding" them into valid values: the 0th day of the month becomes the last day of the previous month, the 0th month is the last month of the previous year, and so on. Given that interpretation, 0000-00-00 fairly obviously becomes the last day of November in the year -1 (better known as 2 BCE). There's no chance that behaviour is going to be changed now: checkdate() is a much better way of sniffing out invalid dates anyway, and it would be a potentially nasty backward compatibility break for people relying on this behaviour in strtotime(). Previous Comments: ------------------------------------------------------------------------ [2010-03-31 15:21:06] fsb at thefsb dot org [email protected]: Any date with month=zero or day=zero is invalid, regardless of the year value. '0000-00-00' is not a date and has no corresponding unix timestamp. ------------------------------------------------------------------------ [2010-03-31 05:17:47] [email protected] This isn't a bug. The year 0 is well within the range of a 64-bit UNIX timestamp, strtotime's semantics for invalid values (such as defining the month and day as 0) are well established at this point, and I see little value in special casing 0000-00-00 and plenty of possible WTFs down the line if it's done. ------------------------------------------------------------------------ [2010-03-30 22:09:56] contractfrombelow at gmail dot com We are getting this same problem, but only on 64 bit platforms. I've tested on a few different machines, all 64 bit machines return int(-62169955200). 32 bit machines return bool(false) as expected. This happens on 5.2.x and 5.3.x. ------------------------------------------------------------------------ [2009-01-16 18:24:50] marco at tumis dot com I've reproduced this on CentOS with kernel 2.6.9-55.ELsmp using php version: PHP 5.2.8 (cli) (built: Jan 5 2009 15:01:45) and the 5.2.8 apache module. And I think it should go back to returning bool(false). ------------------------------------------------------------------------ [2008-11-17 18:33:04] fsb at thefsb dot org i was wrong with the expected results. a year of 0000 is reasonable but neither month = 00 nor day of of the month = 00 are possible, so the strtotime('0000-00-00') should return bool(false) ------------------------------------------------------------------------ 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=46597 -- Edit this bug report at http://bugs.php.net/bug.php?id=46597&edit=1
