Bug #53221 [Opn->Bgs]: Date since epoch is incorrect

Edit report at http://bugs.php.net/bug.php?id=53221&edit=1 ID: 53221 Updated by: rasmus@php.net Reported by: c dot d dot claxton at googlemail dot com Summary: Date since epoch is incorrect -Status: Open +Status: Bogus Type: Bug Package: Date/time related Operating System: Windows 7 PHP Version: 5.3.3 Block user comment: N New Comment: It is just a 32-bit signed integer overflow. Note that even 64-bit Windows still uses 32-bit integers. Platforms with 64-bit integers won't overflow and don't have this problem. Not much we can do about this. Previous Comments: ------------------------------------------------------------------------ [2010-11-01 22:18:00] c dot d dot claxton at googlemail dot com Description: ------------ Checked the number of seconds since the epoch using the code shown in the 'Test script' section below. There is a discrepancy when number of seconds = 10000000000 in that time goes backwards, i.e. 1973 to 2001 to 2014 to 2008. Number of seconds since epoch = 1, date = 1 January 1970 01:00:01 Number of seconds since epoch = 10, date = 1 January 1970 01:00:10 Number of seconds since epoch = 100, date = 1 January 1970 01:01:40 Number of seconds since epoch = 1000, date = 1 January 1970 01:16:40 Number of seconds since epoch = 10000, date = 1 January 1970 03:46:40 Number of seconds since epoch = 100000, date = 2 January 1970 04:46:40 Number of seconds since epoch = 1000000, date = 12 January 1970 14:46:40 Number of seconds since epoch = 10000000, date = 26 April 1970 18:46:40 Number of seconds since epoch = 100000000, date = 3 March 1973 10:46:40 Number of seconds since epoch = 1000000000, date = 9 September 2001 03:46:40 Number of seconds since epoch = 10000000000, date = 7 September 2014 06:50:08 Number of seconds since epoch = 100000000000, date = 11 July 2008 06:56:32 Test script: --------------- <?php for ($i=0; $i<12; $i++) { $numberOfSecondsSinceEpoch = pow(10,$i); $date = date("j F Y H:i:s", $numberOfSecondsSinceEpoch); echo "Number of seconds since epoch = $numberOfSecondsSinceEpoch, date = $date <br />"; } ?> ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=53221&edit=1