In PHP development, what are the advantages and disadvantages of using comments in code for documentation and future reference?

Using comments in PHP code is beneficial for documenting the purpose and functionality of the code, making it easier for other developers to understand and maintain the code in the future. However, excessive or redundant comments can clutter the code and make it harder to read. It's important to strike a balance between providing useful comments and keeping the code clean and concise.

// This function calculates the sum of two numbers
function calculateSum($num1, $num2) {
    // Add the two numbers together
    $sum = $num1 + $num2;
    
    // Return the sum
    return $sum;
}