Difficult OOP problem. parent - child

[Anon]

Hi

I'm dealing with a difficult OOP problem.
Maybe one of you could help me out. I'm getting a bit crazy...

For now I've got 2 classes.

class platformpage
{
member variables...
member methods...

function giveYourSelf($object)
{
  $child_object = $object; 
  // do something with $child_object;
}

}

class mypage extends platformpage
{
member variables...
member methods...
}

$page = new mypage();
$page->giveYourSelf(&$page);

As you can see. I referer the instance object "page" to the parent class. This might seems a bit weird because mypage should be the same as platformpage, but I've got reasons to do so. ( It has to do with serializing and unserializing page objects and validate user inputs). Anyway, everytime I create an instance of the object $page, I'd have to do
$objectname->giveYourSelf(&$objectname);

I tried to implement this in the parent class (platformpage) constructor. So I doesn't have to write that line again. The purpose was to get the instanced object of a child into it's parent class. But if I write this line
$this->giveYourSelf(&this);
into the constructor of class platformpage. I don't get the child's object but the parent object, so "$this".

Is there anyway in PHP to get a an instanciated child object into it's parents?
I don't know this is a specific OOP problem but hopefully there's someway...

Thanx in advance
greetings
Tom

[Anon]

I tried to implement this in the parent class (platformpage) constructor. So I doesn't have to write that line again. The purpose was to get the instanced object of a child into it's parent class. But if I write this line
$this->giveYourSelf(&this);
into the constructor of class platformpage. I don't get the child's object but the parent object, so "$this".

Then why don't you try implementing it in the child's constructor?

Diego

[Anon]

I want to implement this into the parent class and not into the child's class. So the child class doesn't have to deal with it.

The child class doesn't need to know it's there, it's actually an internal mechanism that is none of the child's bussiness. ( I know that PHP doesn't support OOP techniques such as private, protected and public )

Maybe I didn't define my problem properly, so what I actually want is to get a copy of an instance of a child class into it's parent class, while being in the parent's constructor/class.

I know it's a difficult problem, because being in the parent class and to get a copy/reference of the instanciated child's object, since the parent class doesn't know anything of the instanciated child's object.

From the instanciated child's object-side, it is possible to referrer itself to the parent class. Like you said, "implement it in the child's constructor". But from the parent class constructor, for my knowledge, i can't get the instanciated child's object. Does anyone know a solution for this problem?

Someone else suggested me to use variable variables but that didn't work.

Greetings
Tom