Index.html Product Discount Calculator Product Discount Calculator Product Description: List Price: Discount Percent: % Display_discount.php Product Discount Calculator Product Discount Calculator Product Description: List Price:

Index.html

Product Discount Calculator

Product Description:

List Price:

Discount Percent:

%

Display_discount.php

// get the data from the form

$product_description = filter_input(INPUT_POST, 'product_description');

$list_price = filter_input(INPUT_POST, 'list_price');

$discount_percent = filter_input(INPUT_POST, 'discount_percent');

// calculate the discount and discounted price

$discount = $list_price * $discount_percent * .01;

$discount_price = $list_price - $discount;

// apply currency formatting to the dollar and percent amounts

$list_price_f = "$".number_format($list_price, 2);

$discount_percent_f = $discount_percent."%";

$discount_f = "$".number_format($discount, 2);

$discount_price_f = "$".number_format($discount_price, 2);

?>

Product Discount Calculator

Product Description:

List Price:

Standard Discount:

Discount Amount:

Discount Price:

2. Add data validation using IF statements, (similar to page 74/75) and return the following error messages; Text box Condition Error Message returned if empty "Product description is a required field." Product description list Price empty or not a number "List price must be a valid number." List Price O or a negative number "List price must be greater than 0." Discount Percent empty or not a number "Discount percent must be a valid whole number." Discount Price 0 or a negative number "Discount percent must be greater than 0." 3. Add a sales tax calculation of 8% based on the discounted price. 4. Then, display the sales tax rate and the calculated sales tax amount after the discounted price