How do I define a complex object class in PHP

Question

I'm new to defining classes so I hope this isn't a trivial question.

I want to end up with a collection of data in an object that I access through parameters such as:

AllData->A->Discount->Amount AllData->A->Discount->Percentage AllData->A->Claimed->Amount AllData->A->Claimed->Percentage

I started with

class AllData { public $Discount; public $Claimed; }

How do I defined the next levels (A, A->Amount, A->Percentage, etc.) of the object class?

you should elaborate whether all of the internal objects extends the same interface and have same properties — RomanPerekhrest
– RomanPerekhrest, Commented Dec 16, 2016 at 13:55
An array would work in the simplest case as I've described it, but I'm trying to expand my understanding of classes and objects by using them. — user3765165
– user3765165, Commented Dec 16, 2016 at 17:58

Octavian · Accepted Answer · 2016-12-16 14:02:09Z

You should check \stdClass out.

class AllData { public $Discount; public $Claimed; public function __construct() { $Discount = new \stdClass(); $Discount->Amount = 100; $Discount->Percentage = 300; } }

Now you can access the Discount Amount like this:

$object = new AllData(); echo $object->Discount->Amount;

This would be the fastest way as it seems you have classes that contain only attributes (so stdClass is fine for you).

I don't know why it didn't occur to me to use stdClass within a class.
Octavian's response has me on the right track but how do I go to the next level? If I want $Discount->Amount->USA and $Discount->Amount->CDN how do I define those? When I tried adding $Discount->Amount = new stdClass(), I get: "Warning: Creating default object from empty value"

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