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<?php $first = (new DateTime('2018-07-01 04:00:00.000000 America/Toronto')); $second = new DateTime('2018-07-02 00:00:00.000000 America/Toronto'); $third = (new DateTime('2018-07-01 00:00:00.000000 America/Toronto')) ->setTimezone(new DateTimeZone('UTC')); var_dump( $first->diff($second), $third->diff($second) );
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.27, 8.0.0 - 8.0.15, 8.1.0 - 8.1.2
object(DateInterval)#4 (16) { ["y"]=> int(0) ["m"]=> int(0) ["d"]=> int(0) ["h"]=> int(20) ["i"]=> int(0) ["s"]=> int(0) ["f"]=> float(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(0) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) } object(DateInterval)#5 (16) { ["y"]=> int(0) ["m"]=> int(0) ["d"]=> int(1) ["h"]=> int(0) ["i"]=> int(0) ["s"]=> int(0) ["f"]=> float(0) ["weekday"]=> int(0) ["weekday_behavior"]=> int(0) ["first_last_day_of"]=> int(0) ["invert"]=> int(0) ["days"]=> int(1) ["special_type"]=> int(0) ["special_amount"]=> int(0) ["have_weekday_relative"]=> int(0) ["have_special_relative"]=> int(0) }

preferences:
32.89 ms | 462 KiB | 5 Q