post_html.php

<?php
require_once('post.php');
?>
<!DOCTYPE html>
<html>
<head>
    <title>Simple Forum</title>
</head>
<body>
    <form action=<?php echo "post_html.php?section=".$_GET['section'] ;?> method="post">
        <table>
            <tr>
                <td>Topic</td>
                <td><input type="text" name="topic"/></td>
            </tr>
            <tr>
                <td>Message</td>
                <td><textarea name='message' style="resize:none" rows="15" cols="12"></textarea></td>
            </tr>
            <tr>
                <td><input type="submit" name="submit" value="Create"></td>
            </tr>
        </table>
    </form>

</body>
</html>