Input field added through javascript not in PHP $_POST variable. How to fix this?

Question

I have a form inside an html table.

I am dynamically adding input fields to a form through jquery. When I took var dump while submitting the form, the $_POST array does

Answer 1

The HTML is invalid.

You cannot have a form inside a <table> but outside a <td> or <th> that is part of that table.

Some browsers error correct by moving the form somewhere it is valid (while leaving all the controls behind).

Use a validator to find this sort of markup error.