Logical operators in PHP - Mini Project: Build & Apply

Logical operators

📖 Scenario: You are creating a simple system to check if a person is eligible for a special discount based on their age and membership status.

🎯 Goal: Build a PHP program that uses logical operators to decide if a person qualifies for the discount.

📋 What You'll Learn

Create variables for age and is_member

Create a variable min_age for the minimum age to qualify

Use logical operators and and or to check conditions

Print the eligibility result

💡 Why This Matters

🌍 Real World

Logical operators help decide if multiple conditions are true or false, like checking eligibility for discounts, access, or features.

💼 Career

Understanding logical operators is essential for programming decisions, validations, and controlling program flow in many software jobs.

1

Create initial variables

Create a variable called age and set it to 20. Create a variable called is_member and set it to true.

PHP

<?php
// Create variables 'age' and 'is_member'
// Your code here

Need a hint?

Use $age = 20; and $is_member = true; to create the variables.

2

Add minimum age configuration

Create a variable called min_age and set it to 18.

PHP

<?php
$age = 20;
$is_member = true;
// Create variable 'min_age' and set it to 18
// Your code here

Need a hint?

Use $min_age = 18; to set the minimum age.

3

Check eligibility with logical operators

Create a variable called eligible that is true if age is greater than or equal to min_age and is_member is true. Use the and logical operator.

PHP

<?php
$age = 20;
$is_member = true;
$min_age = 18;
// Create variable 'eligible' using logical operator 'and'
// Your code here

Need a hint?

Use parentheses to compare $age >= $min_age and combine with && $is_member.

4

Print the eligibility result

Print the text Eligible for discount: followed by the value of eligible. Use var_export to show true or false.

PHP

= $min_age) && $is_member;
// Print eligibility result
// Your code here

Need a hint?

Use print("Eligible for discount: " . var_export($eligible, true)); to show the result.