title: How to use PHP inside JS files (with Symfony)?
body: <p>I found this:
  <a href="http://www.symfony-zone.com/wordpress/2008/12/13/use-routing-to-server-localized-and-dynamic-javascript/" rel="nofollow noreferrer">http://www.symfony-zone.com/wordpress/2008/12/13/use-routing-to-server-localized-and-dynamic-javascript/</a></p>
  
  <p>But I saw that it has already been built into Symfony with the <strong>use_dynamic_javascript()</strong> AssetHelper.</p>
  
  <p>I can't find any documentation for using this helper though. Any examples, links, or anything to help? Thanks.</p>