Laravel execute MSSQL Store Procedure with output

I working with Laravel 5.3 and MSSQL. I have problem when execute store procedure with output.

My store procedure

create proc spud_test_laravel
(
    @input nvarchar(50),
    @output nvarchar(50) output
)
as
begin
   set @output = @input
end

Please help my to execute this store proce and return the output. I try many ways but no luck.

Thanks all,

via Chebli Mohamed