Checking if $_POST variable is populated
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/3496971/check-if-post-exists">Check if $_POST exists</a>  </p>
</blockquote>



<p>I'm trying to run something if and only if a $_POST var is populated.</p>

<p>Can I do <code>if(empty($_POST[...])) { ... }</code>? Or should I go about this another way?</p>
