Source of: /ch02/example.2-2.php
<?php $outputString "Hello, world"?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
                      "http://www.w3.org/TR/html401/loose.dtd">
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
  <title><?php print $outputString?></title>
</head>
<body bgcolor="#ffffff">
  <h1><?php print $outputString?></h1>
</body>
</html>