Code in PHP.

RULE: Cannot use array and functions and files !!!

User can show all of the data entered from the beginning to the end.

1. Prompt user to enter a (enter data) or b (show all data)

If a is chosen, enter firstName, lastName if b show all existing data.

Example :

Enter a or b >> a

firstname ; mike

lastname : tyson

Enter a or b >> a

firstname : john

lastname : cena

Enter a or b >> b

Mike Tyson

John Cena

I am having problem with how to display all the existing data (mike tyson and john cena) without using array or functions or files. PHP Please