Calling parent classes

[matthewhaworth]

If class 'user', inherits class 'guest', then can an instance of class 'user' reference class 'guest''s functions? I.e.

 

class guest
{
   function doSomething() 
   {
     // does something
   }
   function doSomethingElse()
   { 
    // does something else
   }
}
class user implements guest
{
   function doEvenMore ()
   {
     // does even more 
   }
}

 

$user = new user;
$user->doSomething();

 

Is that possible?

[matthewhaworth]

I've realised it is now .  Though I have a new problem, what's the difference between 'implements' and 'extends'.

[nloding]

What the words imply.  If you are 'implementing' an interface, you are using it.  If you are extending a parent, you are adding to it.

[Daniel0]

I've realised it is now .  Though I have a new problem, what's the difference between 'implements' and 'extends'.

 

If you use implements then you are using interfaces, but if you use extend then you are, well, extending the class, you are making your class a child of the class you are extending (which will be the parent class).

 

Note that you can implement multiple interfaces but you can only extend one class.