Getters and Setters

Getters and Setters — a practical guide to getters setters OOP with clear examples you can reuse in real projects.

OOP Tutorial Series (36/65). Prefer one article? Read the complete OOP tutorial.

Short description

Getters/setters validate changes and preserve encapsulation. In modern PHP, consider readonly properties when mutation is unnecessary.

Getter/setter

class Profile {
    public function __construct(private string $email) {}
    public function getEmail(): string { return $this->email; }
    public function setEmail(string $email): void {
        if (! filter_var($email, FILTER_VALIDATE_EMAIL)) {
            throw new InvalidArgumentException('Invalid email');
        }
        $this->email = $email;
    }
}