title: Type hinting for properties in PHP 7?
body: <p>Does php 7 support type hinting for class properties? </p>
  
  <p>I mean, not just for <em>setters/getters</em> but for the property itself. </p>
  
  <p>Something like:</p>
  
  <pre><code>class Foo {
      /**
       *
       * @var Bar
       */
      public $bar : Bar;
  }
  
  $fooInstance = new Foo();
  $fooInstance-&gt;bar = new NotBar(); //Error
  </code></pre>