class B {
 public static $s = "baked; 
 public function m () {
 echo self::$s; / /" B" 
 / / $this actually points to the instance of D, how can I access the DVDs? 
} 
} 
 class D extends B {
 public static $s = "Downs; 
} 
 $d = new D (); 
 $d-> m (); 
of course I know that Class D can redefine function m, but I wonder if there is a way not to redefine it. Thank you!
