Parent and Child Classes — a practical guide to parent child class OOP with clear examples you can reuse in real projects.
OOP Tutorial Series (32/65). Prefer one article? Read the complete OOP tutorial.
Short description
Children inherit members and can add/override behavior while staying substitutable for the parent type.
Parent/child
class User { public function role(): string { return 'user'; } }
class Admin extends User { public function role(): string { return 'admin'; } }