在网上看到一个笔试题，感觉挺有意思的，然后我尝试着解一解，欢迎各位大佬指正。

代码题（用 OOP 的思想编码，注意代码规范） 写出你的思路，最好有代码

用 php 写一个微波炉，注意物品正加热时不能开门，带皮带壳食物不能被加热。

感谢大佬们的建议，更进一步理解了 OOP，现更新第二版。

第二版

<?php /** * Created by PhpStorm. * User: arun * Date: 2019-04-30 * Time: 16:10 */ /** * 厨房用具 * Interface kitchenWare */ interface kitchenWare { /** * 加工食材 * @param Food $food * @return mixed */ public function process(Food $food); /** * 是否正在加工 * @return mixed */ public function hasProcess(); } /** * 微波炉 * Class MicrowaveOven */ class MicrowaveOven implements kitchenWare { /** * 是否加热中 * @var bool */ protected $is_heat = false; /** * @param Food $food * @return mixed|string */ public function process(Food $food) { if ($this->hasProcess()) { return '已有食物在加热，无法打开'; } else { if ($food->hasShuck() || $food->hasPericarp()) { return '食物带壳或者带皮，无法进行加热'; } else { $this->is_heat = true; return '食物加热中，加热完成即可取出'; } } } /** * 是否正在加工 * @return bool|mixed */ public function hasProcess() { return $this->is_heat; } } /** * 烤箱 * Class Oven */ class Oven implements kitchenWare { /** * 是否烧烤中 * @var bool */ protected $is_heat = false; /** * @param Food $food * @return mixed|string */ public function process(Food $food) { if ($this->is_heat) { return '已有食物在烤制，无法打开'; } else { if ($food->hasShuck()) { return '食物带壳，无法进行烤制'; } else { $this->is_heat = true; return '食物烤制中，完成即可取出'; } } } /** * 是否正在加工 * @return bool|mixed */ public function hasProcess() { return $this->is_heat; } } /** * 食物 * Class Food */ class Food { /** * 是否带壳 * @var bool */ protected $is_shuck = false; /** * 是否带皮 * @var bool */ protected $is_pericarp = false; /** * Food constructor. * @param bool $is_shuck * @param bool $is_pericarp */ public function __construct(bool $is_shuck, bool $is_pericarp) { $this->is_shuck = $is_shuck; $this->is_pericarp = $is_pericarp; } /** * 判断是否带壳 * @return bool */ public function hasShuck() { return $this->is_shuck; } /** * 判断是否带皮 * @return bool */ public function hasPericarp() { return $this->is_pericarp; } } /** * 烹饪 * Class Cooking */ class Cooking { /** * @var kitchenWare */ protected $kitchenWare; /** * Cook constructor. * @param kitchenWare $kitchenWare */ public function __construct(kitchenWare $kitchenWare) { $this->kitchenWare = $kitchenWare; } /** * 烹饪食物 * @param Food $food * @return mixed */ public function cooking(Food $food) { $data = $this->kitchenWare->process($food); return $data; } } /** * 微波炉加热 * @return mixed */ function test() { $cooking = new Cooking(new MicrowaveOven()); $food = new Food(false, false); $result = $cooking->cooking($food); $result2 = $cooking->cooking($food); var_dump($result, $result2); } /** * 烤箱烤制 * @return mixed */ function test2() { $cooking = new Cooking(new Oven()); $food = new Food(false, true); $result = $cooking->cooking($food); $result2 = $cooking->cooking($food); var_dump($result, $result2); } test(); test2();

第一版

<?php /** * Created by PhpStorm. * User: arun * Date: 2019-04-30 * Time: 16:10 */ /** * 厨房用具 * Interface kitchenWare */ interface kitchenWare { /** * 加工食材 * * @param $food * @return mixed */ public function process($food); } /** * 微波炉 * Class MicrowaveOven */ class MicrowaveOven implements kitchenWare { /** * 是否加热中 * @var bool */ protected $is_heat = false; public function process($food) { if ($this->is_heat) { return '已有食物在加热，无法打开'; } else { if ($food['is_shuck'] || $food['is_pericarp']) { return '食物带壳或者带皮，无法进行加热'; } else { $this ->is_heat = true; return '食物加热中，加热完成即可取出'; } } } } /** * 烤箱 * Class Oven */ class Oven implements kitchenWare { /** * 是否烧烤中 * @var bool */ protected $is_heat = false; public function process($food) { if ($this->is_heat) { return '已有食物在烤制，无法打开'; } else { if ($food['is_shuck']) { return '食物带壳，无法进行烤制'; } else { $this ->is_heat = true; return '食物烤制中，完成即可取出'; } } } } /** * 食物 * Class Food */ class Food { /** * 是否带壳 * @var bool */ protected $is_shuck = false; /** * 是否带皮 * @var bool */ protected $is_pericarp = false; /** * Food constructor. * @param bool $is_shuck * @param bool $is_pericarp */ public function __construct(bool $is_shuck, bool $is_pericarp) { $this->is_shuck = $is_shuck; $this->is_pericarp = $is_pericarp; } public function getFood() { return [ 'is_shuck' => $this->is_shuck, 'is_pericarp' => $this->is_pericarp, ]; } } /** * 烹饪 * Class Cooking */ class Cooking { /** * @var kitchenWare */ protected $kitchenWare; /** * Cook constructor. * @param kitchenWare $kitchenWare */ public function __construct(kitchenWare $kitchenWare) { $this->kitchenWare = $kitchenWare; } /** * 烹饪食物 * @param $food * @return mixed */ public function cooking($food) { $data = $this->kitchenWare->process($food); return $data; } } /** * 微波炉加热 * @return mixed */ function test() { $cooking = new Cooking(new MicrowaveOven()); $food = new Food(false, false); $result = $cooking->cooking($food->getFood()); $result2 = $cooking->cooking($food->getFood()); var_dump($result, $result2); } /** * 烤箱烤制 * @return mixed */ function test2() { $cooking = new Cooking(new Oven()); $food = new Food(false, true); $result = $cooking->cooking($food->getFood()); $result2 = $cooking->cooking($food->getFood()); var_dump($result, $result2); } test(); test2();

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