捨てるの勿体ない気がするから

search.php

<?php
    /**
     * @param int $type
     * @param int $itemId
     * @param int $itemDamage
     *
     * @return ShopItem|null
     */
    public function searchShopItem(int $type, int $itemId, int $itemDamage): ?ShopItem
    {
        foreach ($this->shopItems as $shopItem) {
            if (
                $shopItem->getType() === $type &&
                $shopItem->getItemId() === $itemId &&
                $shopItem->getItemDamage() === $itemDamage
            ) {
                return $shopItem;
            }
        }
        return null;
    }