<?php require 'person.php'; require 'car.php'; $person = new person("Mike"); $car = new car(1234, $person); $person->set_owned_car($car); print_r($person); echo "<br>"; print_r($car); echo "<br>"; print $person->get_name() . " has a car with plate number " . $person->get_owned_car()->get_plate_number(); echo "<br>"; print "The car with plate number " . $car->get_plate_number() . " belongs to " . $car->get_owner()->get_name();