PHP

<html>
    <body>
<?php
abstract class Vehicle {
    private $manufacturer;
    private $model;
    private $number;
    private $maxSkorost;
    private $fuelPer100km;

    public function __construct($manufacturer, $model, $number, $maxSkorost, $fuelPer100km) {
        $this->manufacturer=$manufacturer;
        $this->model=$model;
        $this->number=$number;
        $this->maxSkorost=$maxSkorost;
        $this->fuelPer100km=$fuelPer100km;
    }

    public function getManufacturer(){
        return $this->manufacturer;
    }

    public function getModel(){
        return $this->model;
    }

    public function getNumber(){
        return $this->number;
    }

    public function getmaxSkorost(){
        return $this->maxSkorost;
    }

    public function getFuelPer100km(){
        return $this->fuelPer100km;
    }

    public function setNumber($number){
        $this->number=$number;
    }

    public function setMaxSpeed($speed){
        $this->maxSkorost=$speed;
    }

    public function saveToFile()
    {
        $myfile = fopen("record.txt", "a") or die("Unable to open file!");
        $text = "Manufacturer: $this->manufacturer, Model: $this->model, Number: $this->number, Max speed: $this->maxSkorost, Fuel/100: $this->fuelPer100km";
        fwrite($myfile, "\n".$text);
        fclose($myfile);
    }
}
class Car extends Vehicle{
    private $doorsCount;

    public function __construct($manufacturer, $model, $number, $maxSkorost, $fuelPer100km, $doorsCount) {
        parent::__construct($manufacturer, $model, $number, $maxSkorost, $fuelPer100km);
        $this->doorsCount=$doorsCount;
    }

    public function getDoorsCount(){
        return $this->doorsCount;
    }
}
class Bus extends Vehicle {
    private $seatsCount;
    private $wheelsCount;

    public function __construct($manufacturer, $model, $number,$maxSkorost, $fuelPer100km, $seatsCount, $wheelsCount) {
        parent::__construct($manufacturer, $model, $number, $maxSkorost, $fuelPer100km);
        $this->seatsCount=$seatsCount;
        $this->wheelsCount=$wheelsCount;
    }

    public function getSeatsCount(){
        return $this->seatsCount;
    }

    public function getWheelsCount(){
        return $this->wheelsCount;
    }
}
class SchoolBus extends Bus{
    private $schoolName;

    public function __construct($manufacturer, $model, $number, $maxSkorost, $fuelPer100km, $seatsCount, $wheelsCount, $schoolName) {
        parent::__construct($manufacturer, $model, $number, $maxSkorost, $fuelPer100km, $seatsCount, $wheelsCount);
        $this->$schoolName=$schoolName;
    }

    public function getSchoolName()
            {
        return $this->schoolName;
    }

    public function setSchoolName($name)
    {
       $this->schoolName=$name;
    }
}
         $myCar = new Car("carProizvoditel","carModel",300,10,111,4);
            echo $myCar->getManufacturer() . "<br/>";
            echo $myCar->getModel() . "<br/>";
            echo $myCar->getMaxSkorost() . "<br/>";
            echo $myCar->getFuelPer100km() . "<br/>";
            echo $myCar->getNumber() . "<br/>";
            echo $myCar->getDoorsCount() . "<br/>";

            echo "<br/><br/>";
            $myBus = new Bus("BusProizvoditel","busModel",200,20,222,30,4);
            echo $myBus->getManufacturer() . "<br/>";
            echo $myBus->getModel() . "<br/>";
            echo $myBus->getMaxSkorost() . "<br/>";
            echo $myBus->getFuelPer100km() . "<br/>";
            echo $myBus->getNumber() . "<br/>";
            echo $myBus->getSeatsCount() . "<br/>";
            echo $myBus->getWheelsCount() . "<br/>";

            echo "<br/><br/>";
            $mySchoolBus = new SchoolBus("SchoolBusProizvoditel","schoolBusModel",100,30,111,30,4,"Uni");
            echo $mySchoolBus->getManufacturer() . "<br/>";
            echo $mySchoolBus->getmodel() . "<br/>";
            echo $mySchoolBus->getMaxSkorost() . "<br/>";
            echo $mySchoolBus->getFuelPer100km() . "<br/>";
            echo $mySchoolBus->getNumber() . "<br/>";
            echo $mySchoolBus->getSeatsCount() . "<br/>";
            echo $mySchoolBus->getWheelsCount() . "<br/>";
            echo $mySchoolBus->getSchoolname() . "<br/>";

            $myCar->saveToFile();


        ?>

    </body>
</html>