How can I use PHP in HTML? do I need to include a tag? : <p>I am trying to do something basic with PHP and HTML first before I get into something big. However, my html page doesn't seem to be processing PHP correctly.</p>

<p>I have the following php code in my html:</p>

<pre><code>&lt;?php echo '&lt;p&gt;Hello World&lt;/p&gt;'; ?&gt;
</code></pre>

<p>However, the output on the html page is:
'Hello World' on one line
but:</p>

<p>'; ?>
follows hello world
How can I fix this so I get 'hello world'?</p>
