【PHP】指定した日の週の週初めの日付を取得するロジック - Qiita

public function get_beginning_week_date($ymd) { # もし週始まりを月曜日にするなら、$w + 1 にすればいいはずです $w = date("w",strtotime($ymd)); $beginning_week_date = date('Y-m-d', strtotime("-{$w} day", strtotime($ymd))); return $beginning_week_date; } Register as a new user and use Qiita more conveniently You get articles that match your needsYou can efficiently read back useful informationYou can use dark themeWhat you ca