What Are Functions?
Understand the purpose of functions and how to define them.
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What Are Functions?
Welcome to the world of PHP functions! In this lesson, you’ll learn what functions are, why they are useful, and how they make your code more efficient and reusable. Let’s get started!

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Definition of a Function
A function is a block of code that performs a specific task. Functions allow you to write reusable code, making your programs more efficient and easier to maintain.
Example: You can use a function to calculate the area of a rectangle instead of rewriting the same code multiple times.