How can better code structuring and commenting improve the readability and maintainability of PHP code?

Better code structuring and commenting can improve the readability and maintainability of PHP code by breaking down the code into logical sections, using meaningful variable and function names, and adding comments to explain the purpose of each section or block of code. This makes it easier for developers to understand the code and make changes without introducing errors.

<?php

// Define a class for better code structuring
class Calculator {
    
    // Define variables with meaningful names
    private $num1;
    private $num2;
    
    // Constructor to initialize the variables
    public function __construct($num1, $num2) {
        $this->num1 = $num1;
        $this->num2 = $num2;
    }
    
    // Function to add two numbers
    public function add() {
        return $this->num1 + $this->num2;
    }
}

// Create an instance of the Calculator class
$calculator = new Calculator(5, 3);

// Call the add function and output the result
echo $calculator->add();

?>