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<?php $date = new DateTimeImmutable('2015-11-11 15:00:00', new DateTimeZone('UTC')); var_dump($date); echo "\n Date timestamp using format(): " . $date->format('U'); echo "\n Date timestamp using getTimestamp(): " . $date->getTimestamp(); echo "\nChanging timezone to CET"; $date2 = $date->setTimezone(new DateTimeZone('CET')); echo "\n Date timestamp using format(): " . $date->format('U') . ' NB: This has changed?!?!'; echo "\n Date timestamp using getTimestamp(): " . $date->getTimestamp() . ' NB: Now it is back?!?!'; echo "\n Date timestamp using format() again: " . $date->format('U') . ' NB: Now it is back?!?!'; echo "\n Date timestamp using format(): " . $date2->format('U') . ' NB: This has changed?!?!'; echo "\n Date timestamp using getTimestamp(): " . $date2->getTimestamp() . ' NB: Now it is back?!?!'; echo "\n Date timestamp using format() again: " . $date2->format('U') . ' NB: Now it is back?!?!';
based on B1k53
Output for 7.0.20, 7.1.5 - 7.2.0
object(DateTimeImmutable)#1 (3) { ["date"]=> string(26) "2015-11-11 15:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } Date timestamp using format(): 1447254000 Date timestamp using getTimestamp(): 1447254000 Changing timezone to CET Date timestamp using format(): 1447254000 NB: This has changed?!?! Date timestamp using getTimestamp(): 1447254000 NB: Now it is back?!?! Date timestamp using format() again: 1447254000 NB: Now it is back?!?! Date timestamp using format(): 1447254000 NB: This has changed?!?! Date timestamp using getTimestamp(): 1447254000 NB: Now it is back?!?! Date timestamp using format() again: 1447254000 NB: Now it is back?!?!
Output for 5.5.24 - 7.0.6, 7.1.0
object(DateTimeImmutable)#1 (3) { ["date"]=> string(26) "2015-11-11 15:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } Date timestamp using format(): 1447254000 Date timestamp using getTimestamp(): 1447254000 Changing timezone to CET Date timestamp using format(): 1447254000 NB: This has changed?!?! Date timestamp using getTimestamp(): 1447254000 NB: Now it is back?!?! Date timestamp using format() again: 1447254000 NB: Now it is back?!?! Date timestamp using format(): 1447257600 NB: This has changed?!?! Date timestamp using getTimestamp(): 1447254000 NB: Now it is back?!?! Date timestamp using format() again: 1447254000 NB: Now it is back?!?!
Output for 5.3.19 - 5.4.45
Fatal error: Class 'DateTimeImmutable' not found in /in/p27XG on line 2
Process exited with code 255.