jourDansPeriode($date); } public function jourCorrespondAuBonNombre (string $jour, DateTime $date) : bool { $tab = ["lundi", "mardi", "mercredi", "jeudi", "vendredi", "samedi", "dimanche"]; return $tab[((int)$date->format("N")) + 1]==$jour; } public function getLundiSemaine(DateTime $date = null) : DateTime { if ($date == null) {$date = new DateTime();} if ($date->format("N") != "1") { $date->modify("-1 day"); return $this->getLundiSemaine($date); } return $date; } public function getPremierJourDuMois(DateTime $date = null) { if ($date == null) {$date = new DateTime();} return new DateTime($date->format("Y-m")."-1"); } }