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<?php $getAlldate = [ "2018-08-17", "2018-08-20", "2018-08-21", "2018-08-22", "2018-08-23", "2018-08-24", "2018-08-27", "2018-08-28" ]; $getHoliday=[ "2019-1-1", "2019-3-6", "2019-2-28", "2019-5-2", "2019-4-25", "2018-8-27", "2018-8-28" ]; $formattedHoliday = array_map(function ($holiday) { $alldateFormat = 'Y-m-d'; $HolidayFormat = 'Y-n-d'; $date = DateTime::createFromFormat($HolidayFormat, $holiday); return $date->format($alldateFormat); }, $getHoliday); var_dump(array_diff($getAlldate, $formattedHoliday));
Output for git.master, git.master_jit, rfc.property-hooks
array(6) { [0]=> string(10) "2018-08-17" [1]=> string(10) "2018-08-20" [2]=> string(10) "2018-08-21" [3]=> string(10) "2018-08-22" [4]=> string(10) "2018-08-23" [5]=> string(10) "2018-08-24" }

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