SimpleFactory

SimpleFactory

It differs from the StaticFactory because it is not static. Therefore, you can have multiple factories, differently parameterized, you can subclass it and you can mock it. It always should be preferred over a static factory.

UML

Code

Vehicle.php

<?php

namespace Kuriv\PHPDesignPatterns\Creational\SimpleFactory;

abstract class Vehicle
{
    //
}

Bus.php

<?php

namespace Kuriv\PHPDesignPatterns\Creational\SimpleFactory;

class Bus extends Vehicle
{
    //
}

Car.php

<?php

namespace Kuriv\PHPDesignPatterns\Creational\SimpleFactory;

class Car extends Vehicle
{
    //
}

SimpleFactory.php

<?php

namespace Kuriv\PHPDesignPatterns\Creational\SimpleFactory;

class SimpleFactory
{
    /**
     * Create vehicle.
     *
     * @param  string $name
     * @return Vehicle
     */
    public function createVehicle(string $name): Vehicle
    {
        if ($name == 'Bus') {
            return new Bus();
        }
        if ($name == 'Car') {
            return new Car();
        }
    }
}

Test

SimpleFactoryTest.php

<?php

namespace Kuriv\PHPDesignPatterns\Creational\SimpleFactory;

use PHPUnit\Framework\TestCase;

class SimpleFactoryTest extends TestCase
{
    public function testCanCreateBus()
    {
        $bus = (new SimpleFactory())->createVehicle('Bus');
        $this->assertInstanceOf(Bus::class, $bus);
    }

    public function testCanCreateCar()
    {
        $car = (new SimpleFactory())->createVehicle('Car');
        $this->assertInstanceOf(Car::class, $car);
    }
}