Get nearest Sunday's date from date

getSunday.php

function getSunday($date) {
	$dow = strftime("%A", strtotime($date));
	switch ($dow) {
		case "Monday";
			$date = date ('Y-m-d', strtotime ("$date - 1 days"));
			return $date;
		case "Tuesday";
			$date = date ('Y-m-d', strtotime ("$date - 2 days"));
			return $date;
		case "Wednesday";
			$date = date ('Y-m-d', strtotime ("$date - 3 days"));
			return $date;
		case "Thursday";
			$date = date ('Y-m-d', strtotime ("$date - 4 days"));
			return $date;
		case "Friday";
			$date = date ('Y-m-d', strtotime ("$date - 5 days"));
			return $date;
		case "Saturday";
			$date = date ('Y-m-d', strtotime ("$date - 6 days"));
			return $date;
		case "Sunday";
			$date = $date;
			return $date;
	}
}