From: omg00dness at yahoo dot com Operating system: Ubuntu PHP version: 5.3.13 Package: Date/time related Bug Type: Bug Bug description:strtotime() returns incorrect time around DST (America)
Description: ------------ For an American timezone (at least those that observe Daylight Savings Time), strtotime() is outputting incorrectly when adding a negative time string. Example uses March 11, 2012 at 2:00am, where the local time jumps instead to 3:00am. Test script: --------------- <?php date_default_timezone_set('America/Los_Angeles'); echo date("M j Y H:i:s I", strtotime("2012-03-11 5:00:00 -1 hour")) . "\n"; echo date("M j Y H:i:s I", strtotime("2012-03-11 4:00:00 -1 hour")) . "\n"; echo date("M j Y H:i:s I", strtotime("2012-03-11 3:00:00 -1 hour")) . "\n"; echo date("M j Y H:i:s I", strtotime("2012-03-11 3:01:00 -1 hour")) . "\n"; echo date("M j Y H:i:s I", strtotime("2012-03-11 2:59:00 -1 hour")) . "\n"; echo date("M j Y H:i:s I", strtotime("2012-03-11 1:00:00 +1 hour")) . "\n"; echo date("M j Y H:i:s I", strtotime("2012-03-11 0:00:00 +1 hour")) . "\n"; ?> Expected result: ---------------- Mar 11 2012 04:00:00 1 Mar 11 2012 03:00:00 1 Mar 11 2012 01:00:00 0 Mar 11 2012 01:01:00 0 Dec 31 1969 16:00:00 0 //Perhaps output false? Mar 11 2012 03:00:00 1 Mar 11 2012 01:00:00 0 Actual result: -------------- Mar 11 2012 04:00:00 1 Mar 11 2012 03:00:00 1 Mar 11 2012 03:00:00 1 Mar 11 2012 03:01:00 1 Mar 11 2012 01:59:00 0 Mar 11 2012 03:00:00 1 Mar 11 2012 01:00:00 0 -- Edit bug report at https://bugs.php.net/bug.php?id=62185&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=62185&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=62185&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=62185&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=62185&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=62185&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=62185&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=62185&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=62185&r=needscript Try newer version: https://bugs.php.net/fix.php?id=62185&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=62185&r=support Expected behavior: https://bugs.php.net/fix.php?id=62185&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=62185&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=62185&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=62185&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=62185&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=62185&r=dst IIS Stability: https://bugs.php.net/fix.php?id=62185&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=62185&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=62185&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=62185&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=62185&r=mysqlcfg