Pick one from the For, While, Do-While set and combine it with the Form-and-Receiver example to write a new program. Call the new program “sum_from_x_to_y.php“.
This program is to ask the user for two numbers (like the form input example). Given the two numbers received, the program is to SUM all the numbers from the First number to and including the Second number.
(This is the Sum 1 to 25 algorithm, except that the user is giving you the start and end numbers for the summation.)
After displaying the result, the program must give the user the option to do it again with newly-input numbers.