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| interface Shape
{
public function getCircum();
public function getArea();
}
class Rectangle implements Shape
{
private $width, $height;
public function __construct($width, $height)
{
$this->width = $width;
$this->height = $height;
}
public function getCircum()
{
return ($this->width + $this->height) * 2;
}
public function getArea()
{
return $this->width * $this->height;
}
}
class Circle implements Shape
{
private $radii;
public function __construct($radii)
{
$this->radii = $radii;
}
public function getCircum()
{
return 2 * M_PI * $this->radii;
}
public function getArea()
{
return M_PI * pow($this->radii, 2);
}
}
class Factory
{
public static function create()
{
switch (func_num_args()) {
case 1:
return new Circle(func_get_arg(0));
break;
case 2:
return new Rectangle(func_get_arg(0), func_get_arg(1));
break;
}
}
}
$rectangle = Factory::create(4,2);
echo $rectangle->getCircum()." ";
echo $rectangle->getArea()." ";
$circle = Factory::create(3);
echo $circle->getCircum()." ";
echo $circle->getArea();
|