<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Book 4, Chapter 1, Example 2</title>
    </head>
    <body>
        <p>
            Here’s the output of the PHP script:
        </p>
        <?php
            echo "<h1>Hello PHP World!</h1>";
        ?>
    </body>
</html>