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<?php function isMonday($date) { return $date->format('N') === '1'; } function isSunday($date) { return $date->format('N') === '7'; } function getMondays($start, $end) { $mondays = []; $datePeriod = new DatePeriod($start, new DateInterval('P1D'), $end); foreach ($datePeriod as $date) { if (isMonday($date)) $mondays[] = $date; } if (!isSunday($end)) array_pop($mondays); return $mondays; } $startDate = new DateTime('2021-06-20'); $endDate = new DateTime('2021-07-07'); var_dump(getMondays($startDate, $endDate));
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> object(DateTime)#10 (3) { ["date"]=> string(26) "2021-06-21 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } [1]=> object(DateTime)#9 (3) { ["date"]=> string(26) "2021-06-28 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } }

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