Calcul jours ouvrés sans WE et JF

gistfile1.php

$PLV_JOURS_FERIES = array(
	'01/01/2014', '21/04/2014', '01/05/2014', '08/05/2014', '29/05/2014', '09/06/2014', '14/07/2014', '15/08/2014', '01/11/2014', '11/11/2014', '25/12/2014',
	'01/01/2015', '06/04/2015', '01/05/2015', '08/05/2015', '14/05/2015', '25/05/2015', '14/07/2015', '15/08/2015', '01/11/2015', '11/11/2015', '25/12/2015',
	'01/01/2016', '28/03/2016', '01/05/2016', '08/05/2016', '16/05/2016', '14/07/2016', '15/08/2016', '01/11/2016', '11/11/2016', '25/12/2016',
	'01/01/2017', '15/04/2017', '01/05/2017', '08/05/2017', '25/05/2017', '04/06/2017', '14/07/2017', '15/08/2017', '01/11/2017', '11/11/2017', '25/12/2017',
	'01/01/2018', '02/04/2018', '01/05/2018', '08/05/2018', '10/05/2018', '21/05/2018', '14/07/2018', '15/08/2018', '01/11/2018', '11/11/2018', '25/12/2018',
);

public static function addOpenedDays(DateTime $date, $delay)
	{
		global $PLV_JOURS_FERIES;


		/* Si on est un samedi, on rajoute un jour et on boucle */
		if ((int)$date->format('w') == 6) {
			$date->add(new DateInterval('P1D'));
			return Product::addOpenedDays($date, $delay);
		}
		
		/* Si on est un dimanche, on rajoute un jour et on boucle */
		if ((int)$date->format('w') == 0) {
			$date->add(new DateInterval('P1D'));
			return Product::addOpenedDays($date, $delay);
		}

		/* Si on est un jour férié, on rajoute un jour et on boucle */
		if (in_array($date->format('d/m/Y'), $PLV_JOURS_FERIES)) {
			$date->add(new DateInterval('P1D'));
			return Product::addOpenedDays($date, $delay);
		}
		if ($delay <= 0)
			$delay =0;
		else {
			$delay -= 1;
			$date->add(new DateInterval('P1D'));
		}
		
		/* S'il ne reste plus de jour à ajouter, on sort de la boucle */
		if (((int)$delay === 0) && ((int)$date->format('w') != 6) && ((int)$date->format('w') != 0) && (!in_array($date->format('d/m/Y'), $PLV_JOURS_FERIES)))
			return $date;
		else
		/* Sinon on repasse une fois dans la boucle */
			return Product::addOpenedDays($date, $delay);
		
	}