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在PHP項(xiàng)目中實(shí)現(xiàn)多態(tài)性設(shè)計(jì)可以通過使用接口和抽象類來實(shí)現(xiàn)。以下是實(shí)現(xiàn)多態(tài)性設(shè)計(jì)的步驟:
interface Shape {
public function getArea();
}
class Circle implements Shape {
private $radius;
public function __construct($radius) {
$this->radius = $radius;
}
public function getArea() {
return pi() * pow($this->radius, 2);
}
}
class Rectangle implements Shape {
private $width;
private $height;
public function __construct($width, $height) {
$this->width = $width;
$this->height = $height;
}
public function getArea() {
return $this->width * $this->height;
}
}
$circle = new Circle(5);
$rectangle = new Rectangle(4, 6);
$shapes = [$circle, $rectangle];
foreach ($shapes as $shape) {
echo get_class($shape) . " Area: " . $shape->getArea() . "\n";
}
這樣可以在不同的對象中調(diào)用相同的方法,實(shí)現(xiàn)多態(tài)性設(shè)計(jì)。
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