当存在未知的数据时，将表单数据放入数据库的最佳方法是什么？

I have a pretty large form that consists of radio buttons/checkboxes as well as text inputs. Due to the nature of checkboxes, if they post the form without checking it, it isn't sent in the POST data. Which leaves me a bit stuck with how to handle it.I have a pretty large form that consists of rad