POO Basics 1

Bicycle.php

<?php

    // Bicycle.php

    class Bicycle
    {
        /**
         * @param string $color
         */
public $color;

public function setColor(string $color): void
{
    $this->color = $color;
}

/**
 * @var integer
 */
public $currentSpeed;

/**
 * @var integer
 */
public $nbSeats = 1;

/**
 * @var integer
 */
public $nbWheels = 2;

public function forward()
{
    $this->currentSpeed = 7;

    return "Go !";
}

public function brake(): string
{
    $sentence = "";
    while ($this->currentSpeed > 0) {
        $this->currentSpeed--;
        $sentence .= "Brake !!!";
    }
    $sentence .= "I'm stopped !";
    return $sentence;
}
}

Cars.php

<?php

class Cars
{
    /**
     * @var integer
     */
    private $nbWheels = 4;

    /**
     * @var integer
     */
    private $currentSpeed = 27;

    /**
     * @var string
     */
    private $color = "blue";

    /**
     * @var integer
     */
    private $nbSeats = 5;

    /**
     * @var string
     */
    private $energy = "gasoil";

    /**
     * @var integer
     */
    private $energyLevel = 3;

    /**
     * Cars constructor.
     * @param string $color
     * @param string $nbSeats
     * @param string $energy
     */

    public function __construct(string $color, string $nbSeats, string $energy)
    {
        $this->color = $color;
        $this->nbSeats = $nbSeats;
        $this->energy = $energy;
    }


    public function forward()
    {
        $this->currentSpeed = 16;

        return "Go !";
    }

    public function brake(): string
    {
        $sentence = "";
        while ($this->currentSpeed > 0) {
            $this->currentSpeed--;
            $sentence .= "Brake !!!";
        }
        $sentence .= "I'm stopped !";
        return $sentence;
    }


    /**
     * @return int
     */
    public function getNbWheels(): int
    {
        return $this->nbWheels;
    }

    /**
     * @param int $nbWheels
     */
    public function setNbWheels(int $nbWheels)
    {
        $this->nbWheels = $nbWheels;
    }


    /**
     * @return int
     */
    public function getCurrentSpeed(): int
    {
        return $this->currentSpeed;
    }

    /**
     * @param int $currentSpeed
     */
    public function setCurrentSpeed(int $currentSpeed)
    {
        if ($currentSpeed >= 0) {
            $this->currentSpeed = $currentSpeed;
        }
    }

    /**
     * @return string
     */
    public function getColor(): string
    {
        return $this->color;
    }



    /**
     * @return int
     */
    public function getNbSeats(): int
    {
        return $this->nbSeats;
    }




    /**
     * @return string
     */
    public function getEnergy(): string
    {
        return $this->energy;
    }




    /**
     * @return int
     */
    public function getEnergyLevel(): int
    {
        return $this->energyLevel;
    }

    /**
     * @param int $energyLevel
     */
    public function setEnergyLevel(int $energyLevel)
    {
        $this->energyLevel = $energyLevel;
    }

}

index.php

<?php

require_once 'Cars.php';
require_once 'Bicycle.php';

//Instanciation d'un objet $car
$car = new Cars('blue', '5','gasoil');
var_dump($car);

// Instanciation d'un nouvel objet $rockrider
$rockrider = new Cars('red', '4', 'GPL');
var_dump($rockrider);

// Instanciation d'un nouvel objet $tornado
$tornado = new Cars('yellow', '2', 'electric');
var_dump($tornado);

// Instanciation d'un nouvel objet $bike
$bike = new Bicycle ();
var_dump($bike);

// Moving car
echo $car->forward();
echo '<br> Vitesse de la voiture : ' . $car->getCurrentSpeed(). ' km/h' . '<br>';
echo $car->brake();
echo '<br> Vitesse de la voiture : ' . $car->getCurrentSpeed() . ' km/h' . '<br>';
echo $car->brake();

echo '<br>';

// Moving bike
echo $bike->forward();
echo '<br> Vitesse du vélo : ' . $bike->currentSpeed . ' km/h' . '<br>';
echo $bike->brake();
echo '<br> Vitesse du vélo : ' . $bike->currentSpeed . ' km/h' . '<br>';
echo $bike->brake();