Re: Using a Resource as a Class Property

Sanders Kaufman wrote:
Toby A Inkster wrote:
Sanders Kaufman wrote:

So extended (child?) classes MUST NOT (for OOP reasons) automatically call a constructor. Rather, it should be called manually, if and when it's desired.

s/MUST NOT/DO NOT/

Of course, if you don't define a __construct() method in the child
class, the parent class' constructor will get called automatically.

Basically, in PHP __construct() behaves the same way other methods
do: if you define the method in a child class, the parent class'
method will be ignored, unless you explicitly call it from within
the child class' method (using "parent::method()").

So to correct my statement:

In OOP (not just PHP) the constructor of the grandest child :) will be called when a class is instantiated as an object.


True. And in true OO languages, the parent constructor(s) is(are) called, also.

Zat right?

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?



Inheritance.


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