Posted by Sanders Kaufman on 07/23/07 15:12

Toby A Inkster wrote:
> Sanders Kaufman wrote:
>
>> Vocabulary question: When I do this, what is the OOP thing that I'm
>> doing? You said that my use of an object as a property of the parent
>> class was "aggregation. So - when I use use "extends" to create the
>> child's reference to the parent - wassat? Marshalling? Inheritance?
>
> I didn't say that, no.
>
> <?php
> /* Aggragation */
> class A {}
> class B
> {
> public $a = new A;
> }
> ?>
>
> <?php
> /* Inheritance */
> class A {}
> class B extends A {}
> ?>
>
> <?php
> /* Implementation */
> interface A {}
> class B implements A {}
> ?>
>
> <?php
> /* Instantiation */
> class A {}
> $a = new A;
> ?>

OK = but what is it called when you use "extend" to create a child class?

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