Which one is true while making kontrol with php
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/80646/how-do-the-equality-double-equals-and-identity-triple-equals-comparis">How do the equality (== double equals) and identity (=== triple equals) comparison operators differ?</a>  </p>
</blockquote>



<pre><code>if (filter_input(INPUT_GET, "email", FILTER_VALIDATE_EMAIL) === 0)
</code></pre>

<p>or</p>

<pre><code>if (filter_input(INPUT_GET, "email", FILTER_VALIDATE_EMAIL) == 0)
</code></pre>

<hr>

<p>Should I use <code>==</code> or <code>===</code> here?</p>

<p>Where can I use <code>===</code>?</p>
