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run code in 150+ php & hhvm versions
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<?php $date = new DateTime('2011-2-28'); var_dump($date->format('Y-m-d')); $date->add(new DateInterval('P1Y')); var_dump($date->format('Y-m-d')); $date2 = new DateTime('2012-2-29'); var_dump($date2->format('Y-m-d')); $date2->add(new DateInterval('P1Y')); var_dump($date2->format('Y-m-d')); $date3 = new DateTime('2013-2-28'); var_dump($date3->format('Y-m-d')); $date3->add(new DateInterval('P1Y')); var_dump($date3->format('Y-m-d'));
based on lGb8r
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(10) "2011-02-28" string(10) "2012-02-28" string(10) "2012-02-29" string(10) "2013-03-01" string(10) "2013-02-28" string(10) "2014-02-28"
Output for 5.2.0 - 5.2.17
string(10) "2011-02-28" Fatal error: Call to undefined method DateTime::add() in /in/spvWQ on line 6
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/spvWQ on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/spvWQ 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/spvWQ on line 3