Pass dynamic controller in route in laravel

 You can use ::class only on object

$controller_name = RollsController::class;
Route::get($PageController[2], [(new $controller_name)::class, $PageController[2]]);  

or using reflection

$controller_name = RollsController::class;
try {
    $oClass = new ReflectionClass($controller_name);
    Route::get($PageController[2], [$oClass::class, $PageController[2]]);
} catch (ReflectionException $e) {
}