大佬帮帮忙看个代码吧

<?php
declare(strict_types=1);

namespace mini;

use mini\src\platform\Wx;
use mini\src\platform\Dy;

/**
 * Class Factory
 * @method app(array $config=[]) 获取app
 * @method login(string $code='') 登陆
 */

class Factory
{
//    public static function get(string $platform = 'Wx')
//    {
//        $class = ucfirst($platform);
//        return new $class();
//    }

    public function __construct(string $platform = 'Wx')
    {
        $class = ucfirst($platform);
        $a = new $class;
        var_dump($a);
    }
}

/**
    * 小程序登陆
    */
    public function login()
    {
        $factory = new Factory($this->platform);
        var_dump($factory);
    }