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<?php $date = new DateTime('2012-2-29'); var_dump($date->format('Y-m-d')); $date->add(new DateInterval('P1Y')); var_dump($date->format('Y-m-d'));
based on EmW9M
Output for 5.3.0 - 7.1.0
string(10) "2012-02-29" string(10) "2013-03-01"
Output for 5.2.0 - 5.2.17
string(10) "2012-02-29" Fatal error: Call to undefined method DateTime::add() in /in/lGb8r on line 6
Process exited with code 255.
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/lGb8r 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/lGb8r 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/lGb8r on line 3