Bug #66705 [NEW]: format inaccurate after setTimezone

From: chris at codewiz dot biz Operating system: PHP version: Irrelevant Package: Date/time related Bug Type: Bug Bug description:format inaccurate after setTimezone 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 bug report at https://bugs.php.net/bug.php?id=66705&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=66705&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=66705&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=66705&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=66705&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=66705&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=66705&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=66705&r=needscript Try newer version: https://bugs.php.net/fix.php?id=66705&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=66705&r=support Expected behavior: https://bugs.php.net/fix.php?id=66705&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=66705&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=66705&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=66705&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=66705&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=66705&r=dst IIS Stability: https://bugs.php.net/fix.php?id=66705&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=66705&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=66705&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=66705&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=66705&r=mysqlcfg