title: What does following kind of url mean ? Is it a some another page in php?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="http://facebook.stackoverflow.com/questions/3129939/username-urls-like-twitter-and-facebook">username urls like twitter and facebook</a><br>
    <a href="http://facebook.stackoverflow.com/questions/14211303/how-to-get-user-friendly-urls-without-any-file-extensions">How to get user friendly URLs without any file extensions?</a>  </p>
  </blockquote>
  
  
  
  <p>Something like <code>https://www.facebook.com/n26n</code>
   is the url when you view somebody's profile.
  How can you have a url without a file extension? 
  As facebook uses PHP, could this be done by php?</p>
  
  <p>Sorry, i am just a starter so I am just curious  about that.</p>