Boolean type behavior in PHP - Mini Project: Build & Apply

Boolean type behavior

📖 Scenario: Imagine you are creating a simple system to check if certain items are available in stock. You will use boolean values to represent availability.

🎯 Goal: You will create a list of items with their availability as boolean values, set a threshold for availability, check each item against this threshold, and finally print the availability status.

📋 What You'll Learn

Create an associative array with items and their availability as boolean values

Create a variable to represent the availability threshold

Use a loop to check each item's availability against the threshold

Print the availability status for each item

💡 Why This Matters

🌍 Real World

Boolean values are often used to represent simple yes/no or true/false states, such as availability, on/off switches, or feature toggles in software.

💼 Career

Understanding boolean behavior is essential for programming logic, decision making, and controlling program flow in almost all software development jobs.

1

Create the items availability array

Create an associative array called items with these exact entries: 'apple' => true, 'banana' => false, 'orange' => true

PHP

# Create the associative array called items with availability booleans
# Your code here

Need a hint?

Use square brackets to create the array and assign boolean values true or false to each item.

2

Set the availability threshold

Create a boolean variable called threshold and set it to true

PHP

 true, 'banana' => false, 'orange' => true];
# Create a boolean variable called threshold and set it to true
# Your code here

Need a hint?

Just assign the value true to the variable $threshold.

3

Check availability against threshold

Use a foreach loop with variables $item and $available to iterate over $items. Inside the loop, create a boolean variable $isAvailable that is true if $available equals $threshold, otherwise false

PHP

 true, 'banana' => false, 'orange' => true];
$threshold = true;
# Use a foreach loop to check availability against threshold
# Your code here

Need a hint?

Use the strict equality operator === to compare booleans.

4

Print the availability status

Inside the foreach loop, add a print statement that outputs: "$item is available" if $isAvailable is true, otherwise "$item is not available"

PHP

 true, 'banana' => false, 'orange' => true];
$threshold = true;
foreach ($items as $item => $available) {
    $isAvailable = ($available === $threshold);
    # Print availability status here
    # Your code here
}

Need a hint?

Use an if statement to check $isAvailable and print the correct message.