title: What is the common practice to choose between <iframe> and <php include>?
body: <p>I'm working on the index.(php/html) page and need to add some files from other folders. I'm able to keep those files as php or html. Is there any general rule of when and under which circumstances it would be better to use <code>&lt;iframe&gt;</code> rather than <code>&lt;?php include&gt;</code> to add such files? </p>
  
  <p>HTLM
  <code>&lt;iframe src="example.html" width="1280" height="300"&gt;</code></p>
  
  <p>PHP   <code>&lt;?php include 'example.php'; ?&gt;</code></p>