title: how to get used traits in php-class?
body: <p>Is there any function in PHP (5.4) to get used traits as array or similar:</p>
  
  <pre><code>class myClass extends movingThings {
    use bikes, tanks;
  
    __construct() {
      echo 'I\'m using the two traits:' . ????; // bikes, tanks
    }
  }
  </code></pre>