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<?php $dt = new DateTime('2012-01-01 00:01:02.34567'); var_dump($dt, $dt->format('Y-m-d H:i:s.u'));
Output for 5.4.30 - 5.4.45, 5.5.14 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
object(DateTime)#1 (3) { ["date"]=> string(26) "2012-01-01 00:01:02.345670" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } string(26) "2012-01-01 00:01:02.345670"
Output for 7.3.32 - 7.3.33, 8.0.13
object(DateTime)#1 (3) { ["date"]=> string(26) "2012-01-01 00:01:02.345670" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } string(26) "2012-01-01 00:01:02.345670"
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.29, 5.5.0 - 5.5.13
object(DateTime)#1 (3) { ["date"]=> string(19) "2012-01-01 00:01:02" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } string(26) "2012-01-01 00:01:02.345670"
Output for 5.2.2 - 5.2.17
object(DateTime)#1 (0) { } string(26) "2012-01-01 00:01:02.345670"
Output for 5.2.0 - 5.2.1
object(DateTime)#1 (0) { } string(21) "2012-01-01 00:01:02.u"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/sKg5Q on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/sKg5Q on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetime in /in/sKg5Q on line 3

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