title: PHP Interface and func_get_args
body: <p>How would I write an interface that would enforces the classes that implements it to use <code>func_get_args</code>?</p>
  
  <p>Example:</p>
  
  <pre><code>interface SomeInterface{
      function somefunc(); // ???????
  }
  
  class SomeClass implements SomeInterface{
      function somefunc(){
          $args = func_get_args();
      }
  }
  </code></pre>