title: Do child classes inherit parent constants and if so how do I access them?
body: <p>Questions says it all really.</p>
  <p>I have constants defined in my parent class.  I have tried <code>$this-&gt;CONSTANT_1</code> but it's not working.</p>
  <pre><code>class MyParentClass
  {
      const CONSTANT_1=1;
  }
  
  class MyChildClass extends MyParentClass
  {
   // I want to access CONSTANT_1  
  
  }
  </code></pre>