player.php

<?php
class Player {

    public function __construct()
    {
        $this->drawPile = new Collection();
        $this->drawPile->whenEmpty(function ($collection) {
            return $this->recycleDiscardPile();
        })
    }
    
    
    public function draw(int $numberOfCards): void
    {
        $this->hand = $this->drawPile->splice(0, $numberOfCards);
    }