Are there any best practices for structuring and organizing PHP code to avoid unexpected errors?

To avoid unexpected errors in PHP code, it is essential to follow best practices for structuring and organizing the code. This includes using proper indentation, commenting, and naming conventions, as well as breaking down the code into smaller, manageable functions or classes. By organizing the code effectively, it becomes easier to identify and fix any potential issues that may arise.

<?php

// Example of structured and organized PHP code
class Calculator {
    public function add($num1, $num2) {
        return $num1 + $num2;
    }

    public function subtract($num1, $num2) {
        return $num1 - $num2;
    }
}

$calculator = new Calculator();
$result = $calculator->add(5, 3);
echo $result;

?>