title: Polymer 3.x, ajax requests (to port 8081) and PHP together in development
body: <p>(sorry my english!)</p>
  
  <p>Hi.</p>
  
  <p>I have this question about how to use Polymer Cli during the development, together with Xampp / Apache / PHP for the ajax request.</p>
  
  <p>Using "polymer serve" while I'm developing, how do I "send" the requests from ajax to the Xampp / Apache / PHP, I want to use during development, but also afterwards when I go into production.</p>
  
  <p>If I do a build and put everything in htdoc, I correctly receive the responses of the request. But while I develop, using the polymer serve (using 8081 port), how do I send the requests to PHP?</p>