Simple PHP code example

This calculator shows how you can use custom PHP code in your form.

How many widgets would you like to order?

Each widget is $5. If you buy 20 widgets or more, you get a 10% discount.

Your total: $

Source code for this form:

How many widgets would you like to order?
[number* qty]

Each widget is $5. If you buy 20 widgets or more, you get a 10% discount.
[calculation percent_discount cf7-hide "fn_php(if ($_POST{'qty'} >= 20) { return 10; } else { return 0; })"]
[calculate_button "Calculate"]

Your total: $ [calculation total precision:2 "5 * qty * (1 - percent_discount / 100)"]