title: Why do some websites not show a .php at the end of their file extension?
body: <p>Sometimes when I look at a websites URL it will say something like this</p>
  
  <p>www.website.com/index.php</p>
  
  <p>and other times it will look like this</p>
  
  <p>www.website.com/index/</p>
  
  <p>Why does the second URL not have a .php or .html extension?</p>