Will data order in post form be the same to it in web form?

Question

Assuming there are 5 inputs in web form

Answer 1

Most likely yes, but you should not assume this. It depends on your browser how the inputs are being send, and aditionally PHP does not guarantee that a foreach loop iterates in the same order as the elements were added.

It is a bad practise to give your inputs the same name.

You could append an index after each name value (even with javascript if you want), and then read this in PHP to be sure the order is maintained.