Code in PHP. RULE: Cannot use array and functions !!! 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,...

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Extracted text: Code in PHP. RULE: Cannot use array and functions !!! 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. PHP Please