50 points: the form elements are not fixed. how can I transfer them to the backend? (php)

50 points: the form elements are not fixed. how can I transfer them to the backend? (php) I can add up to five groups of text boxes. Their names are the same in the background. I can only accept the first group of text boxes and do not post them to the background. what should I do?

Please give me some advice.

Reply to discussion (solution)

I didn't write any styles for each group of four text boxes. they're crowded together.

Name cannot be written as an array.

Name cannot be written as an array.

If the name is written as an array, the name will be different.