Bug #53662 [Bgs]: strtotime() returns inconsistent output on 64 bit systems

Edit report at http://bugs.php.net/bug.php?id=53662&edit=1 ID: 53662 Updated by: aharvey@php.net Reported by: smenjas at gmail dot com Summary: strtotime() returns inconsistent output on 64 bit systems Status: Bogus Type: Bug Package: Date/time related Operating System: Ubuntu 10.10 PHP Version: 5.3.4 Block user comment: N Private report: N New Comment: PHP uses the version of the proleptic Gregorian calendar specified by ISO 8601, which does include a year 0 (equivalent to 1 BC in the traditional Gregorian calendar). Previous Comments: ------------------------------------------------------------------------ [2011-01-06 03:12:54] smenjas at gmail dot com Thanks for the incredibly prompt reply. That makes sense, except that to the best of my knowledge the year zero is not valid in either the Julian or Gregorian calendars. I had assumed that strtotime would return FALSE for invalid dates. On my 32 bit Ubuntu system, this appears to the case. strtotime("2011-01-32") returns FALSE, as opposed to returning the timestamp for "2011-02-01". An in depth reading of the documentation did not clarify how strtotime() should be expected to handle invalid date strings. ------------------------------------------------------------------------ [2011-01-06 02:57:07] rasmus@php.net This is expected. On 64-bit systems the date range supported is much larger than on 32-bit systems. ------------------------------------------------------------------------ [2011-01-06 02:54:19] smenjas at gmail dot com Description: ------------ --- From manual page: http://www.php.net/function.strtotime --- strtotime() produces different output on 32 and 64 bit systems running PHP 5.3. This affects the "zero date" ("0000-00-00 00:00:00") as well as dates outside the traditional 32 date range. strtotime("0000-00-00 00:00:00") returns FALSE on a 32 bit system. strtotime("0000-00-00 00:00:00") returns -62169955200 on a 64 bit system. Test script: --------------- <?php var_export(strtotime("0000-00-00 00:00:00")); ?> Expected result: ---------------- On 64 bit systems, I would expect strtotime("0000-00-00 00:00:00") to return FALSE as it does on 32 bit systems. Actual result: -------------- On 64 bit systems, strtotime("0000-00-00 00:00:00") returns -62169955200. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=53662&edit=1