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<?php $dow = 2; $x = new \DateTime('midnight'); $x->setTime(12, 0); var_dump($x); var_dump($x->format('w')); //$x->setDate((int) $x->format('Y'), (int) $x->format('m'), (int) ) $y = new \DateTime("1 days"); var_dump($y); var_dump($y->format('w'));
Output for 7.2.8
object(DateTime)#1 (3) { ["date"]=> string(26) "2018-10-30 12:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } string(1) "2" object(DateTime)#2 (3) { ["date"]=> string(26) "2018-10-31 14:31:28.003299" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } string(1) "3"