note 72658 added to function.time

This code drifts by one day after 6 loops: $time = mktime(0, 0, 0, 9, 16, 2006); $now = mktime(0,0,0,2,2,2007); $delta = 7 * 24 * 60 * 60; while ($time < $now) { echo "<p>".date("Y-m-d D H:i:s", $time)."</p>\n"; $time += $delta; } Starts with a Saturday, adds a week of seconds, then drifts backwards to Friday after 6 iterations. Is it because a day is not 24 hours? ---- Server IP: 64.71.164.2 Probable Submitter: 192.55.52.4 (proxied: unknown) ---- Manual Page -- http://www.php.net/manual/en/function.time.php Edit -- https://master.php.net/note/edit/72658 Del: integrated -- https://master.php.net/note/delete/72658/integrated Del: useless -- https://master.php.net/note/delete/72658/useless Del: bad code -- https://master.php.net/note/delete/72658/bad+code Del: spam -- https://master.php.net/note/delete/72658/spam Del: non-english -- https://master.php.net/note/delete/72658/non-english Del: in docs -- https://master.php.net/note/delete/72658/in+docs Del: other reasons-- https://master.php.net/note/delete/72658 Reject -- https://master.php.net/note/reject/72658 Search -- https://master.php.net/manage/user-notes.php