How to set infinite get variables in controller in yii2?

Question

Yii

I have an action code that starts like this:

public function actionCompare($id1, $id2=false, $id3=false, $id4=false) {

I am tormented by doubts that this is not feng shui at all.
How to make an infinite number of id variables so that you can work with them further, as with an array?
How to declare them correctly?

Answer 1

use Yii;
...
public function actionCompare()
{
    $get = Yii::$app->request->get(); // array of GET-params
}