Update query returns false using pre-set values from form

When I try to update my table with the value="" fields from my form the query fails and returns false, but I can't receive an error from it telling me what's wrong in any way.

$input = Input::get("textfield");
$option = Input::get("optionfield");

if($option == 0)
{
    $option = null;
}

if(empty($input))
{
    $input = null;
}

$update = MyTable::where("id", "=", 1)->update(["input" => $input, "option" => $option]);

If I change the value by typing something in the input field then it updates.

How come?

via Chebli Mohamed