Why design patterns matter in PHP - See It in Action

Why Design Patterns Matter

📖 Scenario: Imagine you are building a simple PHP application to manage a list of tasks. You want to organize your code so it is easy to understand, reuse, and maintain. Design patterns help you do this by giving you proven ways to solve common problems in programming.

🎯 Goal: You will create a simple PHP script that uses a design pattern to organize task management. This will show why design patterns matter by making your code cleaner and easier to work with.

📋 What You'll Learn

Create an array called $tasks with three tasks as strings.

Create a variable called $maxTasks and set it to 5.

Use a foreach loop with variables $index and $task to iterate over $tasks with index.

Print each task with its number, but only if the number is less than $maxTasks.

💡 Why This Matters

🌍 Real World

Design patterns help developers write code that is easier to understand and maintain, especially in bigger projects like web applications or software tools.

💼 Career

Knowing design patterns is important for software developers because it shows you can write clean, reusable code and solve common problems efficiently.

1

Create the initial task list

Create an array called $tasks with these exact strings: 'Buy groceries', 'Clean the house', and 'Pay bills'.

PHP

# Create the array called $tasks with three tasks
# Your code here

Need a hint?

Use square brackets [] to create an array and separate items with commas.

2

Set the maximum number of tasks to show

Create a variable called $maxTasks and set it to 5.

PHP

<?php
$tasks = ['Buy groceries', 'Clean the house', 'Pay bills'];
# Create the variable $maxTasks and set it to 5
# Your code here

Need a hint?

Use the assignment operator = to set the value.

3

Loop through tasks with index

Use a foreach loop with variables $index and $task to iterate over $tasks with index. Inside the loop, check if $index is less than $maxTasks before printing.

PHP

<?php
$tasks = ['Buy groceries', 'Clean the house', 'Pay bills'];
$maxTasks = 5;
# Use foreach with $index and $task to loop over $tasks
# Your code here

Need a hint?

Use foreach ($tasks as $index => $task) to get both index and value.

4

Print the tasks with numbers

Inside the foreach loop and if condition, print the task number (index + 1) and the task string using echo. Format it as: Task 1: Buy groceries.

PHP

 $task) {
    if ($index < $maxTasks) {
        # Print the task number and task here
        # Your code here
    }
}

Need a hint?

Use echo and add 1 to $index to start counting from 1.