PHP设计模式 PHP 简单工厂模式
目的
SimpleFactory 是一个简单的工厂模式。
它不同于静态工厂，因为它不是静态的。因此，您可以拥有多个工厂，可以有不同的参数，可以进行子类化，也可以模拟。它总是比静态工厂更受欢迎！
UML 图
代码
SimpleFactory.php
<?php
declare(strict_types=1);
namespace DesignPatterns\Creational\SimpleFactory;
class SimpleFactory
{
public function createBicycle(): Bicycle
{
return new Bicycle();
}
}
Bicycle.php
<?php
declare(strict_types=1);
namespace DesignPatterns\Creational\SimpleFactory;
class Bicycle
{
public function driveTo(string $destination)
{
}
}
用法
$factory = new SimpleFactory();
$bicycle = $factory->createBicycle();
$bicycle->driveTo('Paris');
测试
Tests/SimpleFactoryTest.php
<?php
declare(strict_types=1);
namespace DesignPatterns\Creational\SimpleFactory\Tests;
use DesignPatterns\Creational\SimpleFactory\Bicycle;
use DesignPatterns\Creational\SimpleFactory\SimpleFactory;
use PHPUnit\Framework\TestCase;
class SimpleFactoryTest extends TestCase
{
public function testCanCreateBicycle()
{
$bicycle = (new SimpleFactory())->createBicycle();
$this->assertInstanceOf(Bicycle::class, $bicycle);
}
}