How can the PHP code provided be optimized to improve readability and maintainability?

The PHP code can be optimized for readability and maintainability by breaking down the long if-else statement into smaller, more manageable parts using functions or switch statements. This will make the code easier to understand and modify in the future. 

function getDiscount($userType, $totalAmount) {
    switch ($userType) {
        case 'regular':
            return calculateRegularDiscount($totalAmount);
            break;
        case 'premium':
            return calculatePremiumDiscount($totalAmount);
            break;
        default:
            return 0;
    }
}

function calculateRegularDiscount($totalAmount) {
    // Calculate discount logic for regular users
    return $totalAmount * 0.1;
}

function calculatePremiumDiscount($totalAmount) {
    // Calculate discount logic for premium users
    return $totalAmount * 0.2;
}

$userType = 'regular';
$totalAmount = 100;
$discount = getDiscount($userType, $totalAmount);
echo "Discount for $userType user is: $discount";

Keywords

PHP optimization readability maintainability code refactoring clean code

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