如何在yii2中返回数组值？

public function actionIndex()
{
    $data = [
        'name' => 'John',
        'age' => 25,
        'email' => 'john@example.com',
    ];
    
    return $this->render('index', ['data' => $data]);
}

public function actionIndex()
{
    $data = [
        'name' => 'John',
        'age' => 25,
        'email' => 'john@example.com',
    ];
    
    return $this->asJson($data);
}

public function actionIndex()
{
    $data = [
        'name' => 'John',
        'age' => 25,
        'email' => 'john@example.com',
    ];
    
    return $this->asArray($data);
}

public function actionIndex()
{
    $data = [
        'name' => 'John',
        'age' => 25,
        'email' => 'john@example.com',
    ];
    
    Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
    return $data;
}