PHP Car::getNumCarsの例

コード例 #1

ファイル: static.php プロジェクト: billyloc/Random_projects

    public $color = " ";
    public static $car_count = 0;
    private static $cars = [];
    public function __construct()
    {
        self::$car_count++;
        self::$cars[] = $this;
    }
    public static function getAllCars()
    {
        return self::$cars;
    }
    public static function getNumCars()
    {
        return self::$car_count;
    }
    public function drive($destination)
    {
        echo "we're in a {$this->color} car going to {$destination}";
    }
}
$car1 = new Car();
$car1->color = "blue";
$car1->drive("mars");
echo "<br>There are " . Car::getNumCars() . " instance(s) of car<br>";
echo "<br>";
$car2 = new Car();
$car2->color = "red";
$car2->drive("flagstaff");
echo "<br>There are " . Car::getNumCars() . " instance(s) of car<br>";
print_r(Car::getAllCars());

コード例 #2

ファイル: static.php プロジェクト: Rufio0425/school

class Car
{
    public $color = '';
    public static $car_count = 0;
    private static $cars = [];
    public function __construct()
    {
        self::$car_count++;
        self::$cars[] = $this;
    }
    public static function getAllCars()
    {
        return self::$cars;
    }
    public static function getNumCars()
    {
        return self::$car_count;
    }
    public function drive($destination)
    {
        echo "we're in a {$this->color} car going to {$destination}";
    }
}
$car1 = new Car();
$car1->color = 'blue';
$car1->drive('mars');
echo 'There are ' . Car::getNumCars() . ' instances of car<br>';
$car2 = new Car();
$car2->color = 'red';
$car2->drive('flagstaff');