The difference betwem "Object Abstraction" and "Object Interfaces"

Jarl

I can't seem to find any.

So if you can please tell me what this difference would be.

Shrike

I assume you've read the docs, if so what's not to understand? An interface is the same as the abstract methods in an abstract class more or less.

Jarl

Originally posted by Shrike
I assume you've read the docs, if so what's not to understand? An interface is the same as the abstract methods in an abstract class more or less.

That's exactly how I understod it. But this confuses me a bit. Because why then have the "Object Interfaces" when the "Object Abstraction" will surfice?

The_Terminator2

If you have difficulty understanding this, reading some Java documentation will help you out more, try searching www.javaworld.com 🙂

Shrike

The main difference is that you can implement multiple interfaces, but not classes.

Weedpacket

Also, interfaces only specify the class interface - and not any code behind it.

The_Terminator2

For example, this is an iterface I have

interface controller {
		public function __construct();
		public function dispatch( request $reqt, response $resp );
	}

Thats for a page controller, so if you forget to pass in the request and/or response objects you'll get an error, likewise if you append a differering class method to a page controller, for example 🙂

In Java I think you can implement multiple interfaces but I'm not sure if you can do the same with PHP.