Bug #66705 [Opn]: format inaccurate after setTimezone

Edit report at https://bugs.php.net/bug.php?id=66705&edit=1 ID: 66705 User updated by: chris at codewiz dot biz Reported by: chris at codewiz dot biz Summary: format inaccurate after setTimezone Status: Open Type: Bug Package: Date/time related -Operating System: +Operating System: Ubuntu 13.10 -PHP Version: Irrelevant +PHP Version: 5.5.3 Block user comment: N Private report: N New Comment: fixed version and os Previous Comments: ------------------------------------------------------------------------ [2014-02-13 03:01:20] chris at codewiz dot biz Description: ------------ --- From manual page: http://www.php.net/datetime.format --- What is happening: DateTime()->format() method strange behaviour after DateTime->setTimezone(). Ignores the public date property, Expected return value (format mask applied) should be based on the current public timezone and date properties. Format method should apply the argument format mask to the date property based on current timezone property. Instead it appears that an unknown/undocumented modification to the date property is applied. test script outputs; $nowUtc object(DateTime)[2607] public 'date' => string '2014-02-13 02:42:48' (length=19) public 'timezone_type' => int 3 public 'timezone' => string 'UTC' (length=3) $nowUtc->format('Y-m-d h:i:s') string '2014-02-13 02:42:48' (length=19) $nowUtc->setTimezone( new \DateTimeZone( 'Australia/Sydney' ) ) object(DateTime)[2608] public 'date' => string '2014-02-13 13:42:48' (length=19) public 'timezone_type' => int 3 public 'timezone' => string 'Australia/Sydney' (length=16) $nowUtc->format('Y-m-d h:i:s') string '2014-02-13 01:42:48' (length=19) // expected 2014-02-13 13:42:48 based on Australia/Sydney What is 2014-02-13 01:42:48 from anyway! Test script: --------------- <?php $nowUtc = new \DateTime( 'now', new \DateTimeZone( 'UTC' ) ); echo '$nowUtc'.PHP_EOL; var_dump($nowUtc); $nowUtc = new \DateTime( 'now', new \DateTimeZone( 'UTC' ) ); echo '$nowUtc->format(\'Y-m-d h:i:s\')'.PHP_EOL; var_dump($nowUtc->format('Y-m-d h:i:s')); $nowUtc->setTimezone( new \DateTimeZone( 'Australia/Sydney' ) ); echo '$nowUtc->setTimezone( new \DateTimeZone( \'Australia/Sydney\' ) )'.PHP_EOL; var_dump($nowUtc); echo '$nowUtc->format(\'Y-m-d h:i:s\')'.PHP_EOL; var_dump($nowUtc->format('Y-m-d h:i:s'));exit; ?> Expected result: ---------------- format method should apply the argument format mask to the date property based on current timezone property. Actual result: -------------- Instead it appears that an unknown/undocumented modification to the date property is applied. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=66705&edit=1