title: PHP Based for Search Engine Framework?
body: <p>I'm looking for PHP based search engine framework, that similiar to Compass<br>
  <a href="http://www.compass-project.org/" rel="nofollow">http://www.compass-project.org/</a><br>
  But it should free and open source.<br>
  Any help is really appreciated.<br>
  Thanks<br>
  Ivan</p>