RE: [PHP] PHP5 Inheritance/method override problem

> > Hi Richard, > > > > This is very strange. I can certainly reproduce the problem. Putting a > > var_dump($this) in ClassA's save method shows that PHP sees $this as an > > instance of ClassB - when it should be of ClassA. > > what *you* think it should be and what php's developers decided > it should be > about 3+ years ago obviously differ. > > if you have an instance of ClassB it is exactly that - refering to $this > in the parent class definition won't magically make the class of > the instance change. > > $this is plain this and not something else. Yes, you are indeed correct. I was thinking that as B extends A, A wouldn't know anything about B thus $this in A would refer to A. I can now see that my logic was flawed here. Thanks for pointing it out Jochem! Richard, replacing your if ($this->exists($value)) with if (self::exists($value)) will call A's exists method, as you require. As Brad pointed out however, your defintion of B overrides A's exists method. If you need both, then you should rename the method in class B. Edward