What are the potential pitfalls of using a large number of if-else statements in PHP code?

Using a large number of if-else statements in PHP code can lead to code that is difficult to read, maintain, and debug. It can also result in redundant code and make it harder to implement changes or add new conditions in the future. To address this issue, consider using switch statements or refactoring the code to use polymorphism or a design pattern like the Strategy pattern.

// Example of refactoring if-else statements using the Strategy pattern

interface PaymentMethod {
    public function processPayment();
}

class CreditCardPayment implements PaymentMethod {
    public function processPayment() {
        // Process credit card payment
    }
}

class PayPalPayment implements PaymentMethod {
    public function processPayment() {
        // Process PayPal payment
    }
}

// Usage
$paymentMethod = new CreditCardPayment();
$paymentMethod->processPayment();