Calc PHP

<!DOCTYPE HTML>

<html>
<head>
	<title>Calculator</title>
	<meta charset="utf-8" />
	<link href="style.css" rel="stylesheet" type="text/css">
</head>

<body>

<div id="wrapper">

<h3>Calculator</h3>

<?
	$num1 = $_POST['num1'];
	$num2 = $_POST['num2'];

	{
	if(isset($_POST['+']));
	echo "The total is:"($num1 + $num2)

	elseif(isset($_POST['-']));
	echo "The total is:"($num1 - $num2)

	elseif(isset($_POST['*']));
	echo "The total is:"($num1 * $num2)

	elseif(isset($_POST['/']));
	echo "The total is:"($num1 / $num2)
	}
?>
</body>
</html>