Get query string in laravel 6

I have a problem here I send the date via url, so my url becomes like this

localhost:8000/info/transaksi/89?start_date=2019-09-20&end_date=2019-12-20

I want to take my time to be a variable containing something like this

$var = ?start_date=2019-09-20&end_date=2019-12-20

can it be posible?

or can I replace my web.php url request on the controller?

localhost:8000/info/transaksi/89?start_date=2019-09-20&end_date=2019-12-20 

be like this

sandbox/synch/account/89?start_date=2019-09-20&end_date=2019-12-20 

i'm only need start_date=2019-09-20&end_date=2019-12-20

i try with

$input  = $request->all();

but it produces a different format because it becomes an array

via Chebli Mohamed