如下所示：

DB::connection()->enableQueryLog();#开启执行日志
$count = DB::table('test')   //执行查询
      ->whereNull('deleted_at')
      ->where('id', '=', 3)
      ->where('Name', '=', '测试')
      ->count();
print_r(DB::getQueryLog());  //获取查询语句、参数和执行时间
Array
(
  [0] => Array
    (
      [query] => select count(*) as aggregate from `test` where `deleted_at` is null and `id` = ? and `Name` = ?
      [bindings] => Array
        (
          [0] => 3
          [1] => 测试
        )
 
      [time] => 1
    )
 
)