php设计模式-工厂模式(一)

<?php
abstract class Creator{
    /*
        startFactory 返回一个具体的产品
        factoryMethod 返回对象
    */
    protected abstract function factoryMethod(product $product);
    public function startFactory($product)
    {
        return $this->factoryMethod($product);
    }
}
//所用的产品统一调用
class countryFactory extends Creator{
    private $product;
    protected function factoryMethod(product $product)
    {
        $this->product = $product;
        return $this->product->getProperties();
    }
}

class mysqlFactory extends Creator{
    private $product;
    protected function factoryMethod(product $product)
    {
        $this->product = $product;
        return $this->product->getProperties();
    }
}

class sqliteFactory extends Creator{
    private $product;
    protected function factoryMethod(product $product)
    {
        $this->product = $product;
        return $this->product->getProperties();
    }
}
//共同访问接口
interface product
{
    public function getProperties();
}
//具体的操作
class mysqlProduct implements product{
    private $conn;
    public function getProperties()
    {
        return $this->conn="mysql连接成功".PHP_EOL;;
    }
}

class sqliteProduct implements product{
    private $conn;
    public function getProperties()
    {
        return $this->conn="sqlite连接成功".PHP_EOL;
    }
}

/**
 * 
 */
class client
{
    public $conn;
    public function __construct()
    {
        $this->conn = new countryFactory();
        echo $this->conn->startFactory(new mysqlProduct());
        echo $this->conn->startFactory(new sqliteProduct());
    }
}

$worker = new client();