In the context of PHP development, how can code refactoring help in identifying and resolving errors in complex scripts?

Code refactoring can help in identifying and resolving errors in complex scripts by restructuring the code to make it more readable, maintainable, and efficient. By breaking down large chunks of code into smaller, more manageable pieces, developers can easily spot and fix errors. Refactoring also helps in removing redundant code, improving code quality, and reducing the likelihood of bugs.

// Original complex script
function calculateTotal($items) {
    $total = 0;
    foreach ($items as $item) {
        $total += $item['price'];
    }
    return $total;
}

// Refactored code
function calculateTotal($items) {
    return array_sum(array_column($items, 'price'));
}