如何在同一个控制器(laravel)中的函数之间传递变量？

class ExampleController extends Controller
{
    private $data;

    public function function1()
    {
        $this->data = "Hello World";
    }

    public function function2()
    {
        echo $this->data; // 输出 "Hello World"
    }
}

class ExampleController extends Controller
{
    private $data;

    public function __construct($data)
    {
        $this->data = $data;
    }

    public function function1()
    {
        echo $this->data; // 输出传递的变量值
    }

    public function function2()
    {
        echo $this->data; // 输出传递的变量值
    }
}

// 在路由中创建控制器实例并传递变量值
Route::get('/example', function () {
    $data = "Hello World";
    $exampleController = new ExampleController($data);

    // 调用函数
    $exampleController->function1();
    $exampleController->function2();
});

class ExampleController extends Controller
{
    public function function1()
    {
        // 存储变量到 Session
        session(['data' => 'Hello World']);
    }

    public function function2()
    {
        // 从 Session 中获取变量
        echo session('data'); // 输出 "Hello World"
    }
}