title: How to config dynamic prefix using cakephp and nginx?
body: <p>I have a link http:// example.com/u12/home/index 
  In this link, i have a php source code:</p>
  
  <pre><code>    &lt;?php echo $this-&gt;Html-&gt;link(__('Contact'), array( 'controller' =&gt; 'public', 'action' =&gt; 'contact')) ?&gt;
  </code></pre>
  
  <p>It will show a label "<em>Contact</em>" that redirect to <a href="http://example.com/public/contact" rel="nofollow">http://example.com/public/contact</a></p>
  
  <p>I want to "<em>Contact</em>" label redirect to <a href="http://example.com/u12/public/contact" rel="nofollow">http://example.com/u12/public/contact</a> (keep <strong><em>u12</em></strong> on URL), How can I do it by config Nginx? (I can do it by edit my source code, but do we have any way by config Nginx?)</p>
  
  <p>Thanks!</p>