What is tap() helper in Laravel?
Why Interviewers Ask This
This question targets practical, hands-on experience with Laravel. Interviewers want to see if you've worked with these concepts in real projects, not just read about them. Strong answers include concrete examples.
Answer
The tap() helper passes a value to a callback and then returns the original value. It is designed for performing side effects without interrupting a chain. Example: return tap(User::create($data), fn($user) => $user->sendWelcomeEmail()) — creates the user, sends the email (side effect), and returns the user. Without tap: $user = User::create($data); $user->sendWelcomeEmail(); return $user;. In Eloquent: $user->tap(fn() => event(new UserSaved($user)))->save(). Tap is also used for debugging in method chains: User::where("active", true)->tap(fn($q) => info($q->toSql()))->paginate(). The $this->tap() shorthand in models: return $model->tap->sendWelcomeEmail(). Tap encourages side effects to be named and explicit rather than hidden inside the main expression.
Pro Tip
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