what is the difference between .php and .php.inc file extension?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/7129842/what-is-inc-and-why-to-use-it">What is .inc and why to use it?</a>  </p>
</blockquote>



<p>what's the difference between <strong>.php</strong> an <strong>.php.inc</strong> file extension while including a php file from main php script?</p>

<pre><code>include("filename.php");

include("filename.php.inc");
</code></pre>
