Recap - Making Decisions

Part of the Fundamentals section of Coddy's PHP journey — lesson 33 of 71.

Challenge

Easy

Read four values from input: an integer age, a string membershipType, a string promoCode, and an integer cartTotal.

Determine the appropriate outputs using the decision-making tools you've learned:

Age Category (use if-elseif-else):
- If age is less than 13, print Child
- Otherwise, if age is less than 20, print Teen
- Otherwise, if age is less than 65, print Adult
- Otherwise, print Senior
Membership Discount (use switch): On a new line, print the discount based on membership type:
- gold → 20% off
- silver → 10% off
- bronze → 5% off
- Any other value → No discount
Promo Status (use null coalescing): Create a variable $appliedPromo set to null. Use the null coalescing operator to assign $displayPromo the value of $appliedPromo if it's not null, otherwise use the promoCode input. Print $displayPromo on a new line.
Shipping (use ternary): On a new line, use the ternary operator to print Free shipping if cartTotal is 50 or more, otherwise print Standard shipping.

Example:

If the inputs are 25, gold, SAVE10, and 75, the output should be:

Adult
20% off
SAVE10
Free shipping

If the inputs are 10, basic, WELCOME, and 30, the output should be:

Child
No discount
WELCOME
Standard shipping

Try it yourself

<?php
// Read input
$age = intval(fgets(STDIN));
$membershipType = trim(fgets(STDIN));
$promoCode = trim(fgets(STDIN));
$cartTotal = intval(fgets(STDIN));

// TODO: Write your code below

// 1. Age Category (use if-elseif-else)


// 2. Membership Discount (use switch)


// 3. Promo Status (use null coalescing)
$appliedPromo = null;


// 4. Shipping (use ternary)

?>

All lessons in Fundamentals

2Variables and Data Types

Numbers Strings and Quotes Booleans Naming Conventions Recap - Variable Init Empty Variables String Concatenation Getting User Input Cast to Different Types

5Conditional Logic

If Statement If - Else The Ternary Operator Null Coalescing Operator Switch StatementRecap - Making Decisions

8Loops

For Loop While Loop Foreach Loop Looping with Keys and Values Break Statement Continue Statement Recap - Iterating Over Data

11Final Challenges

Challenge - Factorial Calc Challenge - Longest Word Challenge - Vowel Counter