告别PHP复杂数据序列化反序列化混乱，serialization/serialization库助你构建清晰架构！

composer require serialization/serialization

// src/Domain/User.php
namespace App\Domain;

class User
{
    public int $id;
    public string $name;

    public function __construct(int $id, string $name)
    {
        $this->id = $id;
        $this->name = $name;
    }
}

// src/Domain/Product.php
namespace App\Domain;

class Product
{
    public string $sku;
    public float $price;

    public function __construct(string $sku, float $price)
    {
        $this->sku = $sku;
        $this->price = $price;
    }
}

// src/Serialization/UserSerializer.php
namespace App\Serialization;

use App\Domain\User;
use Serialization\Serializers\Serializer;
use Serialization\Serializers\DispatchableSerializer;

class UserSerializer implements Serializer, DispatchableSerializer
{
    public function serialize($data): string
    {
        if (!$this->isSerializerFor($data)) {
            throw new \InvalidArgumentException('Expected an instance of User.');
        }
        // 将User对象序列化为JSON字符串
        return json_encode([
            'type' => 'user',
            'id' => $data->id,
            'name' => $data->name,
        ]);
    }

    public function isSerializerFor($data): bool
    {
        return $data instanceof User;
    }
}

// src/Serialization/ProductSerializer.php
namespace App\Serialization;

use App\Domain\Product;
use Serialization\Serializers\Serializer;
use Serialization\Serializers\DispatchableSerializer;

class ProductSerializer implements Serializer, DispatchableSerializer
{
    public function serialize($data): string
    {
        if (!$this->isSerializerFor($data)) {
            throw new \InvalidArgumentException('Expected an instance of Product.');
        }
        // 将Product对象序列化为JSON字符串
        return json_encode([
            'type' => 'product',
            'sku' => $data->sku,
            'price' => $data->price,
        ]);
    }

    public function isSerializerFor($data): bool
    {
        return $data instanceof Product;
    }
}

// public/index.php (或你的任何入口文件)
require __DIR__ . '/vendor/autoload.php';

use App\Domain\User;
use App\Domain\Product;
use App\Serialization\UserSerializer;
use App\Serialization\ProductSerializer;
use Serialization\Serializers\DispatchingSerializer;

// 实例化我们的自定义序列化器
$userSerializer = new UserSerializer();
$productSerializer = new ProductSerializer();

// 创建一个调度序列化器，并将所有可用的序列化器注册进去
$dispatcher = new DispatchingSerializer([
    $userSerializer,
    $productSerializer,
]);

// 创建一些数据对象
$user = new User(1, 'Alice');
$product = new Product('BOOK-001', 29.99);

// 使用调度器进行序列化，无需关心具体类型
$serializedUser = $dispatcher->serialize($user);
$serializedProduct = $dispatcher->serialize($product);

echo "Serialized User: " . $serializedUser . PHP_EOL;
// Output: Serialized User: {"type":"user","id":1,"name":"Alice"}

echo "Serialized Product: " . $serializedProduct . PHP_EOL;
// Output: Serialized Product: {"type":"product","sku":"BOOK-001","price":29.99}

// 尝试序列化一个不支持的类型会抛出异常
try {
    $dispatcher->serialize(new \stdClass());
} catch (\InvalidArgumentException $e) {
    echo "Error: " . $e->getMessage() . PHP_EOL;
    // Output: Error: No serializer found for the given data.
}