PHP开发的成本计算功能在企业资源计划（ERP）系统中的使用

class Product {
    private $name;
    private $description;
    private $price;

    public function __construct($name, $description, $price) {
        $this->name = $name;
        $this->description = $description;
        $this->price = $price;
    }

    // Getter and Setter methods

    // Other methods like calculateCost(), etc.
}

class RawMaterial {
    private $name;
    private $quantity;
    private $unitPrice;

    public function __construct($name, $quantity, $unitPrice) {
        $this->name = $name;
        $this->quantity = $quantity;
        $this->unitPrice = $unitPrice;
    }

    // Getter and Setter methods

    // Other methods like calculateCost(), etc.
}

class CostCalculation {
    private $products;
    private $rawMaterials;

    public function __construct($products, $rawMaterials) {
        $this->products = $products;
        $this->rawMaterials = $rawMaterials;
    }

    public function calculateProductCost($productId) {
        $product = $this->products[$productId];
        $rawMaterialsCost = 0;

        // Calculate the cost of raw materials used in the product
        foreach ($product->getRawMaterials() as $rawMaterialId => $quantity) {
            $rawMaterial = $this->rawMaterials[$rawMaterialId];
            $rawMaterialsCost += $rawMaterial->calculateCost() * $quantity;
        }

        // Calculate the total cost of the product
        $totalCost = $rawMaterialsCost + $product->getLaborCost();

        return $totalCost;
    }
}

// Create some products
$products = [
    1 => new Product("Product 1", "Description 1", 10),
    2 => new Product("Product 2", "Description 2", 20),
    // Add more products here
];

// Create some raw materials
$rawMaterials = [
    1 => new RawMaterial("Raw Material 1", 2, 5),
    2 => new RawMaterial("Raw Material 2", 3, 8),
    // Add more raw materials here
];

// Create a CostCalculation instance
$costCalculation = new CostCalculation($products, $rawMaterials);

// Calculate the cost of a product
$productCost = $costCalculation->calculateProductCost(1);
echo "The cost of Product 1 is: $" . $productCost;