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webbserverprogrammering/exercises/classes/
ovn_cls1.php
ovn_cls2.php
ovn_cls3.php
ovn_cls4.php
ovn_cls5.php
ovn_cls6.php
ovn_cls7.php
ovn_cls7.php
91 lines UTF-8 Windows (CRLF)
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<?php
class Ball
{
// Properties
private $color;
private $radius;
private static $no_balls;
// Methods
public function __construct($color, $radius)
{
$this->color = $color;
$this->radius = $radius;
self::$no_balls += 1;
}
public function get_ball_color()
{
return $this->color;
}
public function get_ball_radius()
{
return $this->radius;
}
public function get_ball()
{
return $this;
}
public static function all_balls() {
return self::$no_balls;
}
}
class BallMaterial extends Ball
{
// Properties
private $ball_material;
public function __construct($color, $radius, $ball_material)
{
parent::__construct($color, $radius);
$this->ball_material = $ball_material;
}
public function get_ball_material()
{
return [$this->ball_material];
}
public function get_ball()
{
return $this;
}
}
class BallWeight extends BallMaterial
{
// Properties
private $ball_weight;
public function __construct($color, $radius, $ball_material, $ball_weight)
{
parent::__construct($color, $radius, $ball_material);
$this->ball_weight = $ball_weight;
}
public function get_ball_weight()
{
return [$this->ball_weight];
}
public function get_ball()
{
return $this;
}
}
$ball1 = new BallWeight("red", "12", "stål", "2000");
$ball2 = new BallWeight("blue", "12", "gummi", "100");
$ball3 = new BallWeight("red", "12", "tyg", "10");
$balls = [$ball1->get_ball(), $ball2->get_ball(), $ball3->get_ball()];
print_r($balls);
echo '<br>';
echo "Det finns " . Ball::all_balls() . " bollar!";