interface ILogger

{

    public function LogSomething($message);

}

​

class Logger implements ILogger

{

    public function LogSomething($message)

    {

        .....

    }

}

​

abstract class animal

{

        abstract function getowned();

        private $age;

        protected $logger;

​

        protected function __construct($age, $logger) {

                $this->age = $age;

                $this->logger = $logger

                }

​

        public function getage()

                {

                return $this->age;

                }       

}

​

interface insurable {

        public function getvalue();

        }

​

class pet extends animal implements insurable {

        private $name;

        public function __construct($name,$age,$logger) {

                parent::__construct($age,$logger);

                $this->name = $name;

                }

        public function getname() {

                parent::$this->logger.LogSomething("something To Log");

                return $this->name;

                }

        public function getowned() {

                return ("Owner String");

        }

        public function getvalue() {

                return ("Priceless");

        }

}

​

class house implements insurable {

        public function getvalue() {

                return ("Rising fast");

        }

​

}