指定された日付の月曜日から次の月曜日までの日付を返す

getThisWeek.php

	public function getThisWeek($day = null) {

		$day = !empty($day) ? strtotime($day) : strtotime(date('Y-m-d'));
		$monday = strtotime('this monday', $day);
		if ($day == $monday) {
			$from = date('Y-m-d', $monday);
			$to   = date('Y-m-d', strtotime('next monday', $monday));	
		} else {
			$from = date('Y-m-d', strtotime('last monday', $monday));
			$to   = date('Y-m-d', $monday);	
		}
		return array('from'=>$form, 'to'=>$to);
	}