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<?php function getStartOfWeekDate($date = null) { if ($date instanceof \DateTime) { $date = clone $date; } else { // If date is falsy, it won't harm $date = new \DateTime($date); } return $date->modify('monday this week'); } echo getStartOfWeekDate(new \DateTime('2020-12-06'))->format('Y-m-d');
Output for git.master, git.master_jit, rfc.property-hooks
2020-11-30

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