title: can interface extend other class ?
body: <p>I found this on zend website </p>
  
  <pre><code>interface ResultSetInterface extends \Traversable, \Countable
  {
      public function initialize($dataSource);
      public function getFieldCount();
  }
  </code></pre>
  
  <p>is it possible that interface Extend Class ? and multiple Inheritance? as i know   PHP  doesn't support multiple Inheritance. <a href="http://php.net/manual/en/language.oop5.inheritance.php" rel="nofollow">Click Here</a></p>
  
  <p>can anyone clear this. </p>