Why can laravel directly display the content of the controller without a view?

Question

TP3.2 I remember that if I want to display something, I need a view, but laravel can display it without a controller. How did this happen?

Route::get('/', function () {
    return 222;
});

Answer 1

display and view have nothing to do with each other.

Don’t think about Laravel in terms of TP.

are all PHP frameworks, as long as echo、print、printf、die、exit,... can be output.