LOD

lod.php

<?php
declare(strict_types=1);


final class Wallet
{
    public function __construct(private Money $balance)
    {
    }

    public function subtract(Money $money): void
    {
        $this->balance = $this->balance->subtract($money);
    }
}

final class SomePerson
{
    public function __construct(
        private readonly Wallet $wallet,
    ) {
    }

    public function getWallet(): Wallet
    {
        return $this->wallet;
    }
}

#1
$somePerson = new SomePerson(new Wallet(Money::USD(100)));
$somePerson->getWallet()->subtract(Money::USD(25));


final class SomeAnotherPerson
{
    public function __construct(
        private readonly Wallet $wallet,
    ) {
    }

    public function subtractMoney(Money $money): void
    {
        $this->wallet->subtract($money);
    }
}

#2
$someAnotherPerson = new SomeAnotherPerson(new Wallet(Money::USD(100)));
$someAnotherPerson->subtractMoney(Money::USD(25));