Embed Debugging Messages in HTML Comments

<?php show_source(end(explode('/',$_SERVER['PHP_SELF']))); echo "<hr>"; ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <title>Embed Debugging Messages in HTML Comments</title>
</head>
<body>
    <?php
        $message = 'No peeking!';
    ?>
    <!--

    <?php echo $message;?>

    -->
    View source to see the debug messages.
</body>
</html>

Embed Debugging Messages in HTML Comments View source to see the debug messages.