Match expression (PHP 8) - Mini Project: Build & Apply

Using Match Expression in PHP 8

📖 Scenario: You are building a simple program to convert day numbers into day names. This is like a small calendar helper that tells you the name of the day when you give it a number.

🎯 Goal: Build a PHP program that uses the match expression to convert a day number (1 to 7) into the corresponding day name.

📋 What You'll Learn

Create a variable $dayNumber with a value between 1 and 7

Create a variable $dayName that uses the match expression with $dayNumber

Use match to return the correct day name string for each number from 1 to 7

Print the value of $dayName

💡 Why This Matters

🌍 Real World

Using <code>match</code> expressions helps write clear and concise code when you want to select one value from many options, like converting codes to names.

💼 Career

Understanding <code>match</code> expressions is useful for PHP developers to write modern, readable, and efficient conditional code.

1

Create the day number variable

Create a variable called $dayNumber and set it to the integer 3.

PHP

<?php

// Create the variable $dayNumber and set it to 3
// Your code here

Need a hint?

Use $dayNumber = 3; to create the variable.

2

Set up the match expression

Create a variable called $dayName and assign it the result of a match expression using $dayNumber.

PHP

<?php

$dayNumber = 3;

// Create $dayName using match with $dayNumber
// Your code here

Need a hint?

Use match($dayNumber) { ... }; with cases for 1 to 7.

3

Complete the match cases

Complete the match expression so that each number from 1 to 7 returns the correct day name string: 1 => 'Monday', 2 => 'Tuesday', 3 => 'Wednesday', 4 => 'Thursday', 5 => 'Friday', 6 => 'Saturday', 7 => 'Sunday'.

PHP

<?php

$dayNumber = 3;

$dayName = match($dayNumber) {
    // Add all cases from 1 to 7 here
    // Your code here
};

Need a hint?

Make sure all numbers 1 to 7 have a matching day name string.

4

Print the day name

Write a print statement to display the value of $dayName.

PHP

 'Monday',
    2 => 'Tuesday',
    3 => 'Wednesday',
    4 => 'Thursday',
    5 => 'Friday',
    6 => 'Saturday',
    7 => 'Sunday',
};

// Print the day name
// Your code here

Need a hint?

Use print($dayName); to show the day name.