laravel 打印sql 语句 打印sql语句

public function show($id){    DB::connection()->enableQueryLog(); // 开启查询日志    $user = DB::table('question')->where('id', '1')->first();    $users = DB::table('question')->where('id', $id)->get();    DB::table('question'); // 要查看的sql    $queries = DB::getQueryLog(); // 获取查询日志    print_r($queries); // 即可查看执行的sql，传入的参数等等    exit();    return view('user.index', ['users' => $users]);    //return view('user.profile', ['user' => User::findOrFail($id)]);}