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<?php $interval = new \DateInterval('2007-03-01T13:00:00Z/2008-05-11T15:30:00Z'); print_r($interval); print_r($interval->i);
Output for 7.1.0 - 7.3.0
DateInterval Object ( [y] => 1 [m] => 2 [d] => 10 [h] => 2 [i] => 30 [s] => 0 [f] => 0 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 437 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) 30
Output for 5.3.27 - 5.3.29, 5.4.17 - 7.0.33
DateInterval Object ( [y] => 1 [m] => 2 [d] => 10 [h] => 2 [i] => 30 [s] => 0 [weekday] => 0 [weekday_behavior] => 0 [first_last_day_of] => 0 [invert] => 0 [days] => 437 [special_type] => 0 [special_amount] => 0 [have_weekday_relative] => 0 [have_special_relative] => 0 ) 30
Output for 5.3.20 - 5.3.26, 5.4.10 - 5.4.16
DateInterval Object ( [y] => 1 [m] => 2 [d] => 10 [h] => 2 [i] => 30 [s] => 0 [invert] => 0 [days] => 437 ) 30