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<?php $n = '2017-2-1'; $start = \DateTimeImmutable::createFromFormat('Y-m-d', $n); $end = $start->modify('1 month - 1 second'); $b = new \DateTime('2017-4-12'); var_dump($start->getTimestamp()); var_dump($end->getTimestamp()); var_dump($start->format('Y.M.d')); var_dump($end->format('Y.M.d')); var_dump($end->diff($b));
based on J85Fs
Output for 7.1.0 - 7.3.0alpha1
int(1485963140) int(1488382339) string(11) "2017.Feb.01" string(11) "2017.Mar.01" object(DateInterval)#4 (16) { ["y"]=> int(0) ["m"]=> int(1) ["d"]=> int(10) ["h"]=> int(7) ["i"]=> int(27) ["s"]=> int(41) ["f"]=> float(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(41) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) }
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.0.20
int(1485963140) int(1488382339) string(11) "2017.Feb.01" string(11) "2017.Mar.01" object(DateInterval)#4 (15) { ["y"]=> int(0) ["m"]=> int(1) ["d"]=> int(10) ["h"]=> int(7) ["i"]=> int(27) ["s"]=> int(41) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(41) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) }
Output for hhvm-3.15.4
int(1485963140) int(1488382339) string(11) "2017.Feb.01" string(11) "2017.Mar.01" object(DateInterval)#7 (0) { }