
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<title>Test 1</title>

</head>

<body>

<h1>Addition</h1>

<p>

<?php 

  echo $_GET["a"]+$_GET["b"];

?>

</p>

</body>

</html>