#27737 [NEW]: mktime() has problems with DST

From: m dot konings at knowmany dot nl Operating system: Windows PHP version: 4.3.5 PHP Bug Type: Date/time related Bug description: mktime() has problems with DST Description: ------------ When iterating through a date value, day by day, I use the following code a lot: $cur_date = mktime(0, 0, 0, date('m', $cur_date), date('d', $cur_date)+1, date('Y', $cur_date)); This used to work perfectly on PHP 4.3.4. But with 4.3.5 this call keeps returning 27-3-2004 as soon as it hits this date. I guest this has something to do with Daylight Saving Time. When you change to call to: $cur_date = mktime(1, 0, 0, date('m', $cur_date), date('d', $cur_date)+1, date('Y', $cur_date)); It actually works fine, so it turns out that 00:00:00 @ 28-3-2004 is treated as 27-3-2004. Reproduce code: --------------- <? $cur_date = mktime(0, 0, 0, 3, 1, 2004); while($dummy++ < 31) { echo date('d-m-Y', $cur_date)."<br>\n"; $cur_date = mktime(0, 0, 0, date('m', $cur_date), date('d', $cur_date)+1, date('Y', $cur_date)); } Expected result: ---------------- I expected to see the next list (as it worked on 4.3.4): 20-03-2004 21-03-2004 22-03-2004 23-03-2004 24-03-2004 25-03-2004 26-03-2004 27-03-2004 28-03-2004 29-03-2004 Actual result: -------------- But I actually saw this: 20-03-2004 21-03-2004 22-03-2004 23-03-2004 24-03-2004 25-03-2004 26-03-2004 27-03-2004 27-03-2004 27-03-2004 -- Edit bug report at http://bugs.php.net/?id=27737&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=27737&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=27737&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=27737&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=27737&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=27737&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=27737&r=needscript Try newer version: http://bugs.php.net/fix.php?id=27737&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=27737&r=support Expected behavior: http://bugs.php.net/fix.php?id=27737&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=27737&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=27737&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=27737&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=27737&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=27737&r=dst IIS Stability: http://bugs.php.net/fix.php?id=27737&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=27737&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=27737&r=float