filter_var php question
<p>I am making a quick little email script for a contact form and these variable aren't being set(<code>$firstName</code> and <code>$lastName</code>).</p>

<pre><code>$firstName = filter_var($_POST['firstName'], FILTER_SANITIZE_STRING);
$lastName = filter_var($_POST['lastName'], FILTER_SANITIZE_STRING);
</code></pre>

<p>Note I am a beginner at php</p>
