title: How to keep an xml extension but load from a php file
body: <p>Is it possible to load resources from page2 when requesting page1? </p>
  
  <p>For example I have the url: <a href="http://site.ru/sitemap.xml" rel="nofollow">http://site.ru/sitemap.xml</a></p>
  
  <p>I want to load data from page: <a href="http://site.ru/index.php?route=feed/google_sitemap" rel="nofollow">http://site.ru/index.php?route=feed/google_sitemap</a> but I also want to keep the URL <a href="http://site.ru/sitemap.xml" rel="nofollow">http://site.ru/sitemap.xml</a></p>