title: Constants - how to declare?
body: <p>Im using php 5.3 and wish to declare a constant only to be used in my class using:</p>
  
  <pre><code>const numOfFoo;
  </code></pre>
  
  <p>Is there any conventions to consider with const var names, ie, all caps?</p>
  
  <p>Also is this the correct way to declare it, should I be using private/protected?</p>