{
return new self($name, 'red');
}
public static function createBlueRobot($name)
{
return new self($name, 'blue');
}
private function __construct($name, $color)
{
$this->setName($name);
$this->color = $color;
}
public function setName($name)
{
$this->name = (string) filter_var($name);
}
public function getName()
{
return $this->name;
}
public function getColor()
{
return $this->color;
}
}
$a = Robot::createRedRobot('ロボ太郎');
echo $a->getName();
echo $a->getColor();
$b = Robot::createBlueRobot('ロボ二郎');
echo $b->getName();
echo $b->getColor();