How can PHP developers improve the readability and maintainability of their code by using proper indentation and commenting?

Proper indentation and commenting are essential for improving the readability and maintainability of PHP code. Indentation helps to visually organize the code structure, making it easier to follow. Commenting provides important context and explanations for the code, making it easier for other developers (or even yourself in the future) to understand the code logic.

// This is a simple PHP code snippet with proper indentation and commenting
function calculateSum($num1, $num2) {
    // Calculate the sum of two numbers
    $sum = $num1 + $num2;
    
    return $sum; // Return the sum
}

// Usage example
$number1 = 5;
$number2 = 10;
$result = calculateSum($number1, $number2);
echo "The sum of $number1 and $number2 is: $result";