Is it possible to optimize the function call by name?

Question

PHP

I have a piece from a class.
I want that with a different value of $type, the corresponding function would be called for me.
I replaced the original CASE with such a construction, but now the question is, can the call be made even simpler? (in one line)

public function getData($id, $type){
        $functionName = 'get' . $type . 'Data';
        return $this->$functionName($id);
    }

Answer 1

public function getData($id, $type){
        return $this->{'get' . $type . 'Data'}($id);
    }

// или, понятно дело

// ...
$this->{'get' . $type . 'Data'}($id)
// ...

really don't know why...

Answer 2

The fact that you make a call in 1 line does not mean that it will become easier. Now everything is readable and understandable. In general, a factory method would be used for such purposes, but we are talking about a dynamic language, so in the furnace)