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<?php $date = new DateTime('2017-06-28'); var_dump($date->format('Y-m-d')); $test = floor(1 / 3); var_dump($test); $date->setDate($date->format('Y'), floor(($date->format('m')-1) / 3) * 3 + 1, 1); var_dump($date->format('Y-m-d')); $date = clone($date); $date->modify('+3 month -1 day'); var_dump($date->format('Y-m-d')); $date->setDate($date->format('Y'), 1, 1); var_dump($date->format('Y-m-d')); $date->setDate($date->format('Y'), 12, 31); var_dump($date->format('Y-m-d'));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
string(10) "2017-06-28" float(0) string(10) "2017-04-01" string(10) "2017-06-30" string(10) "2017-01-01" string(10) "2017-12-31"
preferences:
139.74 ms | 404 KiB | 174 Q