This content originally appeared on DEV Community and was authored by Ahmed Raza Idrisi
Let’s say you have this big fat class:
class UserService {
public function register($data) {
// 1. Save to DB
// 2. Send welcome email
// 3. Log activity
}
}
Refactoring Steps:
Identify different responsibilities inside the method.
Create separate classes for each responsibility.
Use Dependency Injection to connect them.
Refactored Class:
class UserService {
private $repo;
private $notifier;
private $logger;
public function __construct(UserRepository $repo, UserNotifier $notifier, UserLogger $logger) {
$this->repo = $repo;
$this->notifier = $notifier;
$this->logger = $logger;
}
public function register($data) {
$this->repo->create($data);
$this->notifier->sendWelcomeEmail($data['email']);
$this->logger->log("User registered: " . $data['email']);
}
}
Now, each class has one responsibility, and UserService just coordinates them.
Benefits:
Easier testing (mock only the part you need)
Easier changes (change email logic without touching DB code)
Cleaner, more maintainable code
This content originally appeared on DEV Community and was authored by Ahmed Raza Idrisi
Ahmed Raza Idrisi | Sciencx (2025-08-14T08:35:14+00:00) Monolithic class in PHP. Retrieved from https://www.scien.cx/2025/08/14/monolithic-class-in-php/
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