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學(xué)習(xí)總結(jié)

• 使用MVC可以有效的把底層的數(shù)據(jù)庫(kù)操作和前端的頁(yè)面渲染分開
• 使用服務(wù)容器可以把模型和視圖封裝在服務(wù)容器中，減少對(duì)外部對(duì)象的依賴
• 門面技術(shù)，可以把模型和視圖中的普通方法封裝成靜態(tài)方法，方便客戶端調(diào)用
• 路由解析可以把url地址中的控制器，方法，參數(shù)進(jìn)行有效解析

效果展示

1.模型類 Model.php

<?php
namespace nMVC
{
use PDO;
class Model
    {
        public function getData():array
        {
            $dbConn  = new \PDO('mysql:host=localhost;dbname=db_phpstudy','root','root');
            $res = $dbConn->query('SELECT * FROM `tb_goods` LIMIT 10')->fetchAll(\PDO::FETCH_ASSOC);
            return $res;
        }
    }
}
?>

2.視圖類 View.php

<?php
namespace nMVC
{
    class View
    {
        public function showData($records)
        {
            echo '<style>
            * {
                padding: 0px;
                margin: 0px;
                box-sizing: border-box;
              }
              .show
              {
                  width: 600px;
                  height: 500px;
                  border: 1px solid #555;
                  margin-left: auto;
                  margin-right: auto;
                  margin-top:20px;
                  background-color: lightseagreen;
                  display: flex;
                  flex-flow: column nowrap;
                  justify-content: space-evenly;
                  align-items: center;
              }
              .show>div
              {
                    width: 100%;
                    border-bottom: 1px solid white;
                    display: flex;
                    flex-flow: row nowrap;
                    justify-content: space-evenly;
                    align-items: center;
               }
               .show>div:first-of-type
                {
                    font-size: larger;
                    font-weight: bolder;
                }
               .show>div>span
                {
                    text-align: center;
                }
               .show > div > span:nth-of-type(1) {
                    width: 50px;
                }
                .show > div > span:nth-of-type(2) {
                    width: 150px;
                }
                .show > div > span:nth-of-type(3) {
                    width: 150px;
                }
                .show > div > span:nth-of-type(4) {
                    width: 100px;
                }
            </style>';
            echo '<div class="show">';
            echo '<h2>商品信息展示</h2>';
            echo '<div><span>編號(hào)</span><span>名稱</span><span>價(jià)格</span><span>時(shí)間</span></div>';
            foreach($records as $record)
            {
                echo '<div >';
                echo '<span>',"{$record['id']}",'</span>';
                echo '<span>',"{$record['name']}",'</span>';
                echo '<span>',"{$record['price']}\\{$record['unit']}",'</span>';
                echo '<span>',"{$record['sdate']}",'</span>';
                echo '</div>';
            }
            echo '</div>';
        }
    }
}
?>

3.服務(wù)容器類 Container.php

<?php
namespace nMVC
{
    require 'Model.php';
    require 'View.php';
    class Container
    {
        protected $case = [];
        public function bind($alias,\Closure $proce)
        {
            $this->case[$alias] = $proce; 
        }
        public function make($alias)
        {
           return call_user_func_array($this->case[$alias],[]);
        }
        public function delete($alias)
        {
            unset($this->case[$alias]);
        }
    }
}
?>

4.門面類 Facede.php

<?php
namespace nMVC
{
    require 'Container.php';
    class Facede
    {
        protected static $container = null;
        protected static $data = [];
        public static function init($container)
        {
            static::$container = $container;
        }
    }
    class Model1 extends Facede
    {
        public static function getdata()
        {
            static::$data = static::$container->make('model')->getdata(); 
        }
    }
    class View1 extends Facede
    {
        public static function showdata()
        {
            $records = static::$container->make('view')->showdata(static::$data);
            return $records;
        }
    }
}
?>

5.控制器類 Controller4.php

<?php
namespace nMVC
{
    require 'Facede.php';
    class Controller4
    {
        public function __construct(Container $container)
        {
            Facede::init($container);
        }
        public function index()
        {
            Model1::getdata();
            return View1::showdata();
        }
    }
    echo 'controller4 Facede 門面技術(shù)<br>';
    //創(chuàng)建一個(gè)服務(wù)容器的對(duì)象
    $container = new Container();
    //服務(wù)容器綁定數(shù)據(jù)
    $container->bind('model',function(){ return new Model; });
    $container->bind('view',function(){ return new View; });
    //創(chuàng)建一個(gè)控制器
    $controller4 = new Controller4($container);
    echo $controller4->index();
    //對(duì)象銷毀
    $container->delete('model');
    $container->delete('view');
}
?>

6.路由解析Route.php

<?php
class GoodsController
{
    public function showdata($id,$name)
    {
        echo '商品編號(hào)：',$id,'<br>';
        echo '商品名稱：',$name,'<br>';
    }
}
//http://localhost/php11/0514/Route.php/goods/showdata/id/1/name/%E7%99%BD%E8%8F%9C/sdate
//獲取pathinfo信息
$pathInfoStr = $_SERVER['PATH_INFO'];
//過慮空數(shù)組元素，生成一個(gè)數(shù)組
$pathInfoArr = array_values(array_filter(explode('/',$pathInfoStr)));
//獲取要訪問的控制器
$controller =ucfirst(array_shift($pathInfoArr)) .'Controller';
//獲取要訪問的控制器的方法
$method = array_shift($pathInfoArr);
//獲取參數(shù)
$paras = [];
for($i=0;$i<count($pathInfoArr);$i+=2):
    //如果參數(shù)沒有值就不解析這個(gè)參數(shù)
    if(isset($pathInfoArr[$i+1])):
        $paras[$pathInfoArr[$i]] = $pathInfoArr[$i+1];
    endif;
endfor;
//動(dòng)態(tài)生成一個(gè)控制器類，動(dòng)態(tài)調(diào)用控制器類中的方法
$goods = new $controller();
$goods->$method(...array_values($paras));
?>

效果展示

批改老師：天蓬老師

批改狀態(tài)：合格

老師批語：這個(gè)案例將我們之前的不少函數(shù)知識(shí)都用到了