객체 인스턴스화를 관리하기 위해 PHP에서 간단한 팩토리 패턴을 적용하는 방법

abstract class Article {
    protected $title;
    protected $content;

    // getter 和 setter 方法

    public function getTitle() {
        return $this->title;
    }

    public function setTitle($title) {
        $this->title = $title;
    }

    public function getContent() {
        return $this->content;
    }

    public function setContent($content){
        $this->content = $content;
    }
}

class NewsArticle extends Article {
    public function display() {
        echo "这是一篇新闻文章";
    }
}

class BlogArticle extends Article {
    public function display() {
        echo "这是一篇博客文章";
    }
}

class TutorialArticle extends Article {
    public function display() {
        echo "这是一篇教程文章";
    }
}

class ArticleFactory {
    public static function create($type) {
        switch ($type) {
            case 'news':
                return new NewsArticle();
            case 'blog':
                return new BlogArticle();
            case 'tutorial':
                return new TutorialArticle();
            default:
                throw new Exception("不支持的文章类型");
        }
    }
}

$news = ArticleFactory::create('news');
$news->setTitle('PHP简单工厂模式应用示例');
$news->setContent('简单工厂模式是一种创建型设计模式...');

$blog = ArticleFactory::create('blog');
$blog->setTitle('学习PHP简单工厂模式');
$blog->setContent('简单工厂模式是一种创建型设计模式...');

$tutorial = ArticleFactory::create('tutorial');
$tutorial->setTitle('使用PHP简单工厂模式');
$tutorial->setContent('简单工厂模式是一种创建型设计模式...');

$news->display(); // 输出：这是一篇新闻文章
$blog->display(); // 输出：这是一篇博客文章
$tutorial->display(); // 输出：这是一篇教程文章