title: What are the Types of HTML Page extensions
body: <p>I knew that html page can be saved as <code>.htm</code> or <code>.html</code>,<code>.xhtml</code> stands for extensible html.but i see some other extensions such as <code>.dhtml</code>,<code>.phtml</code></p>
  
  <p>Can Anyone explain what it means and different types of html extensions.</p>