<?php
// 定義抽象產(chǎn)品類（汽車）
abstract class Car
{
    protected $brand;
    protected $type;
    public function __construct($brand, $type)
    {
        $this->brand = $brand;
        $this->type = $type;
    }
    abstract public function run();
}
// 定義抽象產(chǎn)品類（手機）
abstract class Phone
{
    protected $brand;
    protected $model;
    public function __construct($brand, $model)
    {
        $this->brand = $brand;
        $this->model = $model;
    }
    abstract public function call();
}

2. 定義具體產(chǎn)品類

<?php
// 定義具體產(chǎn)品類（奔馳汽車）
class BenzCar extends Car
{
    public function run()
    {
        echo "{$this->brand} {$this->type} is running..." . PHP_EOL;
    }
}
// 定義具體產(chǎn)品類（寶馬汽車）
class BmwCar extends Car
{
    public function run()
    {
        echo "{$this->brand} {$this->type} is running..." . PHP_EOL;
    }
}
// 定義具體產(chǎn)品類（蘋果手機）
class ApplePhone extends Phone
{
    public function call()
    {
        echo "{$this->brand} {$this->model} is calling..." . PHP_EOL;
    }
}
// 定義具體產(chǎn)品類（華為手機）
class HuaweiPhone extends Phone
{
    public function call()
    {
        echo "{$this->brand} {$this->model} is calling..." . PHP_EOL;
    }
}

3. 定義抽象工廠類

<?php
// 定義抽象工廠類
abstract class AbstractFactory
{
    abstract public function createCar($type);
    abstract public function createPhone($model);
}

4. 定義具體工廠類

<?php
// 定義具體工廠類（德國工廠）
class GermanFactory extends AbstractFactory
{
    public function createCar($type)
    {
        switch ($type) {
            case 'Benz':
                return new BenzCar('Benz', 'C200L');
            case 'Bmw':
                return new BmwCar('Bmw', 'X3');
            default:
                throw new Exception('Undefined car type.');
        }
    }
    public function createPhone($model)
    {
        switch ($model) {
            case 'iPhone':
                return new ApplePhone('Apple', 'iPhone 11');
            case 'Huawei':
                return new HuaweiPhone('Huawei', 'Mate 30');
            default:
                throw new Exception('Undefined phone model.');
        }
    }
}
// 定義具體工廠類（中國工廠）
class ChineseFactory extends AbstractFactory
{
    public function createCar($type)
    {
        switch ($type) {
            case 'Benz':
                return new BenzCar('奔馳', 'C200L');
            case 'Bmw':
                return new BmwCar('寶馬', 'X3');
            default:
                throw new Exception('Undefined car type.');
        }
    }
    public function createPhone($model)
    {
        switch ($model) {
            case 'iPhone':
                return new ApplePhone('蘋果', 'iPhone 11');
            case 'Huawei':
                return new HuaweiPhone('華為', 'Mate 30');
            default:
                throw new Exception('Undefined phone model.');
        }
    }
}

5. 使用

<?php
// 使用德國工廠
$germanFactory = new GermanFactory();
$car1 = $germanFactory->createCar('Benz');
$car1->run(); // output: Benz C200L is running...
$phone1 = $germanFactory->createPhone('iPhone');
$phone1->call(); // output: Apple iPhone 11 is calling...
// 使用中國工廠
$chineseFactory = new ChineseFactory();
$car2 = $chineseFactory->createCar('Bmw');
$car2->run(); // output: 寶馬 X3 is running...
$phone2 = $chineseFactory->createPhone('Huawei');
$phone2->call(); // output: 華為 Mate 30 is calling...