Welcome back! You're off to a great start in your PHP journey. Now that you're comfortable with printing messages to the screen, it's time to learn about a crucial aspect of writing maintainable and understandable code: comments.

In this lesson, you'll discover how to use comments in your PHP code. Comments are sections of your code that are ignored during execution but are invaluable for explaining what the code does. This is essential for anyone who reads your code, including your future self! We'll cover both single-line and multi-line comments.

Here's a brief example to set the stage:

php
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1<?php
2// This is a single-line comment
3
4/*
5This is a multi-line comment
6You can use it to span multiple lines
7*/
8
9echo "Comments are very easy in PHP"; // Inline comment next to a print statement
10?>

Using comments effectively can make your code much easier to read and maintain. Think of comments as the narrative of your code; they explain the story of what your code is doing, making it simpler for you—and others—to understand and modify it in the future. Whether you’re working alone or as part of a team, comments are an invaluable tool for clear communication in code.

Exciting, right? Let's jump into the practice section and explore the power of comments in PHP.