如何写出简洁的总体概述

Question

一位游客想要参观全部 5 个景点。我需要创建一个类来计算访问者访问所有景点一次需要支付的费用。我真的不知道如何在 PHP 中最好地做到这一点。我如何确保它以整齐的轮廓写得工整？

<?php   
 //attraction class
 class Attraction 
 {
    private $name;
    private $capacity;
    private $ticketPrice;

    public function __construct($name, $capacity, $ticketPrice)
    {
        $this->name = $name;
        $this->capacity = $capacity;
        $this->ticketPrice = $ticketPrice;
    }
    
    public function __get($property)
    {
        if (property_exists($this, $property)) {
            return $this->$property;
        }
    }

    public function __set($property, $value) {
        if (property_exists($this, $property)) {
            $this->$property = $value;
        }
    }


    public function display() {
        $result .="Naam" .$this->name . "<br>";
        $result .="Capaciteit" .$this->capacity . "<br>";
        $result .="TicketPrijs" .$this->ticketPrice ."Euro<br>";
        return $result;
    }

}
 //the rollercoaster class and parrent
    class RollerCoaster extends Attraction
    {
        private $height;
        private $speed;

        public function __construct($name, $capacity, $ticketPrice, $height, $speed)
        {
            $this->height = $height;
            $this->speed = $speed;
          parent::__construct($name, $capacity, $ticketPrice);
    } 

    public function __get($property)
    {
        if (property_exists($this, $property)) {
            return $this->$property;
        }
    }

    public function __set($property, $value) {
        if (property_exists($this, $property)) {
            $this->$property = $value;
        }
  }
   
}
//this is the code from the Rollercoaster class

我尝试自己创建一个概述类，但效果不太好。

Answer 1

创建接口：

<?php

declare(strict_types=1);

interface Attraction
{
    public function calculatePrice(): int
}

创建景点：

<?php

declare(strict_types=1);

class RollerCoaster implements Attraction
{
    public function calculatePrice(): int
    {
        // calculate price by RollerCoaster conditions
    }
}

<?php

declare(strict_types=1);

class WatterSlide implements Attraction
{
    public function calculatePrice(): int
    {
       // calculate price by WatterSlide condtions 
    }
}

创建景点集合：

<?php

declare(strict_types=1);

class AttractionCollection
{
    private array $attractions;

    public function add(Attraction $attraction) {
        $this->attractions[] = $attraction;
    }
}

创建计算总价的服务：

<?php

declare(strict_types=1);

class PriceCalculatorService
{
    public function totalAttractionsPrice(AttractionCollection $attractions): int
    {
        $total = 0;

        foreach($attractions->getAttraction() as $attraction){
            $total += $attraction->calculatePrice();    
        }

        return $total;
    }
}

打印价格：

<?php

declare(strict_types=1);

$attractionCollection = new AttractionCollection();
$rollerCoaster = new RollerCoaster();
$waterSlide = new WaterSlide();

$attractionCollection->add($rollerCoaster);
$attractionCollection->add($waterSlide);

$priceCalculator = new PriceCalculatorService();
$totalPrice = $priceCalculator->totalAttractionsPrice($attractionCollection);

echo $totalPrice;