In what ways can improving the readability and structure of PHP code contribute to easier debugging and maintenance?

Improving the readability and structure of PHP code can contribute to easier debugging and maintenance by making the code more understandable and organized. This can help developers quickly identify and fix issues, as well as make it easier to update and modify the code in the future.

// Before improving readability and structure
function calculateTotal($price, $quantity) {
$total = $price * $quantity;
return $total;
}

// After improving readability and structure
function calculateTotal($price, $quantity) {
    $total = $price * $quantity;
    return $total;
}