<?php
    class Costumer{
        private $firstname;
        private $lastname;
        Private $seat;

        /**
         * @return mixed
         */
        public function getFirstname()
        {
            return $this->firstname;
        }

        /**
         * @param mixed $firstname
         */
        public function setFirstname($firstname)
        {
            $this->firstname = $firstname;
        }

        /**
         * @return mixed
         */
        public function getLastname()
        {
            return $this->lastname;
        }

        /**
         * @param mixed $lastname
         */
        public function setLastname($lastname)
        {
            $this->lastname = $lastname;
        }

        /**
         * @return mixed
         */
        public function getSeat()
        {
            return $this->seat;
        }

        /**
         * @param $seat
         */
        private function setSeat($seat)
        {
            $this->seat = $seat;
        }

        public function book(){
            $randomseat = random_int(1, 100);
            //query
            $this->setSeat($randomseat);
        }
        public function printTicket(){
            $ticket ="<h2>Ticket</h2>";
            $ticket.="Passenger:" . $this->getFirstname() . $this->getLastname();
            $ticket.="<br />Seat:" . $this->getSeat();
            return $ticket;
        }
    }