title: PHP backward compatibility
body: <p>Am having a trouble running the code written for targeted PHP version 5.3. Currently I have PHP version 5.5.12 on my PC. Is there a way to have more than version on the same machine or What should I do to have those codes running perfectly fine. Am using WAMP server . Thanks</p>
  
  <p>I tried to follow this article but I got stuck on how to  install older versions manually . <a href="http://blog.dynom.nl/archives/Multiple-PHP-versions-on-one-webserver_20091103_53.html" rel="nofollow">Article Link</a></p>