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<?php $interval = new DateInterval('P2M1D'); $dt = new DateTime('first day of January 2011'); var_dump($dt); $dt->add($interval); var_dump($dt); $dt = new DateTime('first day of January 2011'); $dt->sub($interval); var_dump($dt);
Output for 5.4.30 - 5.4.45, 5.5.14 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
object(DateTime)#2 (3) { ["date"]=> string(26) "2011-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#2 (3) { ["date"]=> string(26) "2011-03-02 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#3 (3) { ["date"]=> string(26) "2010-10-31 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 5.3.7 - 5.4.29, 5.5.0 - 5.5.13
object(DateTime)#2 (3) { ["date"]=> string(19) "2011-01-01 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#2 (3) { ["date"]=> string(19) "2011-03-02 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#3 (3) { ["date"]=> string(19) "2010-10-31 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 5.3.0 - 5.3.6
object(DateTime)#2 (3) { ["date"]=> string(19) "2011-01-01 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#2 (3) { ["date"]=> string(19) "2011-03-01 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#3 (3) { ["date"]=> string(19) "2010-11-01 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 5.0.0 - 5.2.17
Fatal error: Class 'DateInterval' not found in /in/mfFHh on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: dateinterval in /in/mfFHh on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: dateinterval in /in/mfFHh on line 2