want to learn OOP in php
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/1557691/good-training-sources-for-oop-php-anyone">Good Training Sources for OOP PHP, Anyone ?</a>  </p>
</blockquote>



<p>Hello friends.I want to learn OOP in php.So please suggest me where to start learning that?Is there any sites for reference?I have seen php.net.But still I want more good sites for reference.So please help me.</p>
