What are some best practices for structuring and organizing PHP code in a beginner project?

When starting a beginner project in PHP, it is important to follow best practices for structuring and organizing your code to ensure readability, maintainability, and scalability. One common approach is to separate your code into different files or directories based on functionality, such as separating logic from presentation. Using a consistent naming convention for variables, functions, and classes can also help make your code easier to understand. Additionally, utilizing comments and documentation to explain the purpose of your code can improve readability for yourself and others who may work on the project.

// Example of structuring and organizing PHP code in a beginner project

// Separate your code into different files or directories based on functionality
include 'config.php'; // Configuration settings
include 'functions.php'; // Reusable functions
include 'database.php'; // Database connection

// Use a consistent naming convention for variables, functions, and classes
$myVariable = 'Hello World';

function myFunction() {
    // Function logic here
}

class MyClass {
    // Class definition here
}

// Utilize comments and documentation to explain the purpose of your code
// This function calculates the sum of two numbers
function calculateSum($num1, $num2) {
    return $num1 + $num2;
}