Assignment and compound assignment in PHP - Mini Project: Build & Apply

Assignment and Compound Assignment in PHP

📖 Scenario: You are managing a small online store's inventory. You need to keep track of the number of items in stock and update the stock as sales happen.

🎯 Goal: Build a simple PHP script that uses assignment and compound assignment operators to update the stock count of a product.

📋 What You'll Learn

Create a variable to hold the initial stock count.

Create a variable to hold the number of items sold.

Use a compound assignment operator to update the stock count after sales.

Print the updated stock count.

💡 Why This Matters

🌍 Real World

Managing inventory counts in an online store or any business that tracks stock.

💼 Career

Understanding assignment and compound assignment is essential for updating values efficiently in programming tasks such as inventory management, financial calculations, and data processing.

1

Create the initial stock count variable

Create a variable called $stock and set it to 50 to represent the initial number of items in stock.

PHP

<?php

// Create a variable called $stock and set it to 50
// Your code here

Need a hint?

Use the assignment operator = to set the value.

2

Create the items sold variable

Create a variable called $sold and set it to 13 to represent the number of items sold.

PHP

<?php

$stock = 50;

// Create a variable called $sold and set it to 13
// Your code here

Need a hint?

Remember to use the assignment operator =.

3

Update the stock using compound assignment

Use the compound assignment operator -= with the variable $stock and the variable $sold to subtract the sold items from the stock.

PHP

<?php

$stock = 50;
$sold = 13;

// Use compound assignment to subtract $sold from $stock
// Your code here

Need a hint?

The -= operator subtracts the right value from the left variable and assigns the result back to the left variable.

4

Print the updated stock count

Write a print statement to display the updated value of $stock.

PHP

<?php

$stock = 50;
$sold = 13;
$stock -= $sold;

// Print the updated stock count
// Your code here

Need a hint?

Use print($stock); to show the current stock.