Is optimizing and cleaning up code more beneficial than using tools like Zend SafeGuard or Optimizer on a moderately visited website?

Optimizing and cleaning up code is generally more beneficial than using tools like Zend SafeGuard or Optimizer on a moderately visited website. This is because optimizing code can improve the overall performance and efficiency of the website, leading to faster loading times and better user experience. Additionally, cleaning up code can make it easier to maintain and debug in the future.

// Example of optimizing and cleaning up PHP code

// Before optimization and cleanup
function calculate_total($items) {
    $total = 0;
    foreach ($items as $item) {
        $total += $item['price'];
    }
    return $total;
}

// After optimization and cleanup
function calculate_total($items) {
    return array_sum(array_column($items, 'price'));
}