Description:
------------
I'm not sure if this is a bug or if this is intended, but I didn't find anything in the documentation:

If a class inherits a static property, but overrides it with its own static property, the property of the parent is used.

(If the properties are not marked as static, I get the expected result)

Test script:
---------------
class A{
  protected static $hi="Hello";
  public function __construct(){
    $class=get_class();
    echo $class::$hi;
  }
}
class B extends A{
  protected static $hi="What's up";
}
$a=new A();
$b=new B();

Expected result:
----------------
HelloWhat's up

Actual result:
--------------
HelloHello