Stop PHP parsing but output the rest of the file
<p>I'm developing a web application where an html page is created for the user. The page could include anything that the user puts in it. We take these pages and add a little PHP at the top to check some things before outputting the actual html. It would look kind of like this:</p>

<pre><code>&lt;?php
    require 'checksomestuff.php';

    // User's html below
?&gt;

&lt;html&gt;
    &lt;!-- user's html --&gt;
&lt;/html&gt;
</code></pre>

<p>Is there a way to stop PHP from parsing anything after my <code>require</code>? I need the html to be outputted, but, since the user can add anything they want to the html, I don't want any user-added PHP to be executed. Obviously that would be a security issue. So, I want the user's html to be outputted, but not parse any PHP. I would rather not have to put the user's html into another file.</p>
