title: how to generate QR images from url in php
body: <p>how can i generate <a href="http://en.wikipedia.org/wiki/QR_Code" rel="nofollow noreferrer">QR Images</a> from an URL and display them on a website?</p>
  
  <p>ideally in PHP but any other popular server side language would work too, as long as it is not too complicated to set up.</p>
  
  <p>thanks!</p>