title: X/Html Validator in PHP
body: <p>First thing: I know that there is interface to W3C validator: <a href="http://pear.php.net/package/Services_W3C_HTMLValidator/" rel="noreferrer">http://pear.php.net/package/Services_W3C_HTMLValidator/</a>
  But I don't know if I can install it on cheap hosting server. I don't think so.</p>
  
  <p>I need validator for my seo tools within my Content Managment System so it must be pretty much portable.</p>
  
  <p>I would love to use W3C but only if it would be portable. I can also use Curl for this but it won't be elegant solution.</p>
  
  <p>The best one I found so far is: <a href="http://phosphorusandlime.blogspot.com/2007/09/php-html-validator-class.html" rel="noreferrer">http://phosphorusandlime.blogspot.com/2007/09/php-html-validator-class.html</a></p>
  
  <p>Is there any validator comparable to W3C but portable (only PHP that does not depend on custom packages)?</p>