Do-while loop execution model in PHP - Mini Project: Build & Apply

Understanding Do-While Loop Execution Model in PHP

📖 Scenario: Imagine you are counting the number of cups of coffee you drink in a day. You want to make sure you count at least one cup, even if you forget to start counting. This is like a do-while loop, which runs the code first and then checks if it should continue.

🎯 Goal: You will create a PHP program that uses a do-while loop to count coffee cups until a limit is reached. This will help you understand how the do-while loop runs the code at least once before checking the condition.

📋 What You'll Learn

Create a variable to hold the coffee cup count

Create a limit variable for maximum cups

Use a do-while loop to increase the count

Print the final count after the loop ends

💡 Why This Matters

🌍 Real World

Counting or repeating actions at least once is common in real life, like checking if a machine works before stopping.

💼 Career

Understanding do-while loops helps in programming tasks where you must run code first and then decide if it should repeat, useful in user input validation and process control.

1

Create the initial coffee cup count variable

Create a variable called $coffeeCount and set it to 0.

PHP

# Your code here

Need a hint?

Use $coffeeCount = 0; to start counting from zero.

2

Set the maximum coffee cup limit

Create a variable called $maxCups and set it to 3.

PHP

<?php
$coffeeCount = 0;
# Your code here

Need a hint?

Use $maxCups = 3; to set the limit to three cups.

3

Use a do-while loop to count coffee cups

Write a do-while loop that increases $coffeeCount by 1 inside the loop and continues while $coffeeCount is less than $maxCups.

PHP

<?php
$coffeeCount = 0;
$maxCups = 3;
# Your code here

Need a hint?

Remember, the do block runs first, then the while checks the condition.

4

Print the final coffee cup count

Write a print statement to display the text "Total coffee cups: " followed by the value of $coffeeCount.

PHP

<?php
$coffeeCount = 0;
$maxCups = 3;
do {
    $coffeeCount++;
} while ($coffeeCount < $maxCups);
# Your code here

Need a hint?

Use print("Total coffee cups: $coffeeCount"); to show the result.