Final Classes and Methods

Final Classes and Methods — a practical guide to PHP final keyword with clear examples you can reuse in real projects.

OOP Tutorial Series (31/65). Prefer one article? Read the complete OOP tutorial.

Short description

Use `final` to protect critical classes/methods from unsafe extension.

final examples

final class Money {
    public function __construct(public int $cents) {}
}
class Service {
    final public function boot(): void {}
}