อยากได้ Code ที่เอาวันที่ ที่กรอกไปตรวจสอบว่าตรงกับวันอะไรครับ รายละเอียดด้านใน

<?
$date = "19/09/2011";
$ex = explode("/",$date);
if($ex[1] == "01"){
	$month = "January";
}else if($ex[1] == "02"){
	$month = "February";
}else if($ex[1] == "03"){
	$month = "March";
}else if($ex[1] == "04"){
	$month = "April";
}else if($ex[1] == "05"){
	$month = "May";
}else if($ex[1] == "06"){
	$month = "June";
}else if($ex[1] == "07"){
	$month = "July";
}else if($ex[1] == "08"){
	$month = "August";
}else if($ex[1] == "09"){
	$month = "September";
}else if($ex[1] == "10"){
	$month = "October";
}else if($ex[1] == "11"){
	$month = "November";
}else if($ex[1] == "12"){
	$month = "December";
}
print "<br>".date("D",strtotime("$ex[0] $month 2011"));
?>