class help

[chucklarge]

hello,
I am looking for help on how to structure several classes that build up from a fundamental item.

Here is a similar sitution to what i am trying to do.

Say i sell computers. Each computer can have several configurable options like color, memory, hard drive, processor etc.

once the computer is built, it goes into a big box, maybe by itself, maybe with 5 other computers. It just can vary.

then the box full of how many computers is put on a pallet with many other boxes, each that have a different number of computers in them. each pallet can have a different number of boxes on it.

Then that pallet is put in a truck with other pallets that contain different numbers of boxes.

so, then what i would like to do is create a truck and have it tell me what is inside. a summary of totals of each thing(pallet, boxes, computers) then have it break down each individual items

truck a (44 pallets, 3000 boxes, 10,000 computers)
=>pallet 1
==>box 1
===>computer 1(black, 512m, 100gig, 2.5Ghz)
===>computer 2(white, 1gig, 75gig, 3Ghz)
===>computer 3(grey, 512m, 100gig, 3.1Ghz)
===>computer 4(black, 512m, 30gig, 2.0Ghz)
==>box 2
===>computer 1(black, 512m, 100gig, 2.5Ghz)
===>computer 2(white, 1gig 75gig, 3Ghz)
===>computer 3(grey, 512m, 100gig, 3.1Ghz)
=>pallet 2
==>box 1
===>computer 1(white, 1gig, 100gig, 3Ghz)
==>box 2
===>computer 1(black, 512m, 100gig, 2.7Ghz)
===>computer 2(grey, 1gig, 75gig, 3Ghz)
.. etc

I am able to build a class with methods and variables and interface with that no problem, i am just getting confused how i start creating classes of other classes and how to then use them.

any help is appreciated.

chuck

any help is appreciated.

[chucklarge]

Well I think I figured it out mostly. How would i move the size of each item up the ladder. ie , how would i report that this is 5 computers?
thanks,
chuck

<?php

class COMPUTER
{	var	$color;
	var $memory;
	var $harddrive;
	var $processor; 

function __construct($color, $memory, $harddrive, $processor)
{	$this->color = $color;
	$this->memory = $memory;
	$this->harddrive = $harddrive;
	$this->processor = $processor;
}

function printComputer()
{	echo $this->returnComputer();
}

function returnComputer()
{	return '('.$this->color.', '.$this->memory.', '.$this->harddrive.', '.$this->processor.')';
}
}

class BOX
{	var $computerArray;

function addComputer($comp)
{	$this->computerArray[]=$comp;
}

function printBox()
{	echo $this->returnBox();
}

function returnBox()
{	$returnString = '<ul>';
	foreach ($this->computerArray as $key => $value)
	{	$returnString .= '<li>Computer '. ($key + 1) . ' ' .$value->returnComputer().'</li>';
	}
	$returnString .= '</ul>';

	return $returnString;
}
}

class PALLET
{	var $boxArray;

function addBox($box)
{	$this->boxArray[] = $box;
}	

function printPallet()
{	echo $this->returnPallet();
}

function returnPallet()
{	$returnString = '<ul>';
	foreach ($this->boxrArray as $key => $value)
	{	$returnString .= '<li>Box '. ($key + 1) . ' ' .$value->returnBox().'</li>';
	}
	$returnString .= '</ul>';

	return $returnString;
}
}

// Pallet 1
$boxP1_1 = new BOX;
$boxP1_1->addcomputer(new COMPUTER('black', '512m', '100gig', '2.5Ghz') );
$boxP1_1->addcomputer(new COMPUTER('white', '1gig', '80gig', '3.0Ghz') );
$boxP1_1->addcomputer(new COMPUTER('black', '1.5gig', '120gig', '3.0Ghz') );
//$box1->printBox();

$boxP1_2 = new BOX;
$boxP1_2->addcomputer(new COMPUTER('grey', '2gig', '100gig', '3.5Ghz') );
$boxP1_2->addcomputer(new COMPUTER('black', '1gig', '80gig', '3.0Ghz') );
//$box2->printBox();

$pallet1 = new PALLET;
$pallet1->addBox($boxP1_1);
$pallet1->addBox($boxP1_2);
$pallet1->printPallet();
?>