How to submit the unchecked checkbox form?

Question

PHP

I have a dynamic page which generates a table.
Each line of the table has an edit element.
When clicked, a popup window pops up with a form that is generated in php.
And on some elements there is input type="checkbox"
But the problem is that when submitting the form, the checkbox that was unchecked is not specified.
I don't want to do a big load on the database to check what's on and what's off.
So is there a standard method for submitting the unchecked checkbox form?

I really don't want to create a form using JS.

Answer 1

About what big loading on a DB you speak? Set the default value for the column and that's it. There is no load.
Here is an example SQL DEFAULT Constraint