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PHP: 一个迷你的MVC小框架
zl的php学习博客
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自己手写一个简易的MVC框架

  1. mvc结构分为: m(model) - v(view) - c(controller).
  2. 其中m和v可用第三方包实现,而c这需要自己实现(原因: c是业务逻辑实现区,充满了不确定性).
  4. m用到的第三方库为: catfan/medoo
  5. v用到的第三方库为: league/plates

具体实现步骤步骤

  1. 创建一个项目目录testFrame在此目录下分别创建application和core目录
  2. 安装第三方包
    1. 安装catfan/medoo: composer require catfan/medoo
      安装catfan-medoo
    2. 安装league/plates: composer require league/plates
      安装league-plates
    3. 最终目录结构
      最终目录结构
  3. 在core目录中新建Model和View脚本并在其中导入第三方包
    1. Model.php的代码:
      1. <?php
      2. namespace core;
      3. use Medoo\Medoo;
      4. class Model extends Medoo
      5. {
      6.  public function __construct(array $options) 
      7.  { 
      8.      parent::__construct($options); 
      9.  }
      10. }
    2. View.php的代码:
      1. <?php
      2. namespace core;
      3. use League\Plates\Engine;
      4. class View extends Engine
      5. {
      6.  public function __construct($directory = null, $fileExtension = 'php') { parent::__construct($directory, $fileExtension); }
      7. }
      3.最终目录
      引入第三方包

  4. 在application目录下创建三个目录,分别是models, views, controllers

    1. 在models目录下新建StaffsModel.php,获取员工表的数据.
    2. 在views目录下新建staffs目录,创建显示员工数据的视图list.php(html).
    3. 在controllers目录下创建StaffsController.php,把员工数据(StaffsModel)插入到视图(StaffsView)中.

    具体代码:

    StaffsController.php
    ```phpt

    1. <?php
    1.   namespace controllers;
    3.   use Closure;
    5.   // 服务容器
    6.   class Container
    7.   {
    8.   protected $instanles;
    10.       // 插入外部依赖
    11.       public function bind($alias, Closure $process)
    12.       {
    13.           $this->instanles[$alias] = $process;
    14.       }
    16.       // 取出外部依赖
    17.       public function make($alias, $params = []):object
    18.       {
    19.           return call_user_func_array($this->instanles[$alias], $params);
    20.       }
    21.   }
    23.   // 门面
    24.   class Facade
    25.   {
    26.   protected static $container = null;
    28.       // 构造函数,初始化$container
    29.       public static function initialize(Container $container)
    30.       {
    31.           static::$container = $container;
    32.       }
    33.   }
    35.   // 静态化模型类
    36.   class StaticStaffModel extends Facade
    37.   {
    38.   public static function select($tablename, $field, $condition)
    39.   {
    40.   return static::$container->make('model')->select($tablename, $field, $condition);
    41.   }
    42.   }
    44.   // 静态化视图类
    45.   class StaticStaffView extends Facade
    46.   {
    47.   public static function fetch($path, $data)
    48.   {
    49.   return static::$container->make('view')->render($path, ['staffs' => $data]);
    50.   }
    51.   }
    53.   // 控制器
    54.   class StaffController
    55.   {
    56.   public function __construct(Container $container)
    57.   {
    58.   Facade::initialize($container);
    59.   }
    61.       public function index($tablename, $field, $condition, $path)
    62.       {
    63.           $data = StaticStaffModel::select($tablename, $field, $condition);
    64.           return StaticStaffView::fetch($path, $data);
    65.       }
    66.   }
    1. > StaffsModel.php
    2. ```phpt
    3. <?php
    4.      namespace models;
    6.      use testFrame\core\Model;
    8.      class StaffModel extends Model
    9.      {
    10.      public function __construct(array $options)
    11.      {
    12.      parent::__construct($options);
    13.      }
    14. }

    staffs/list.php
    ```html

    1.  <!DOCTYPE html>
    2.  <html lang="en">
    3.      <head>
    4.          <meta charset="UTF-8">
    5.          <meta name="viewport" content="width=device-width, initial-scale=1.0">
    6.          <title>员工信息</title>
    7.          <style>
    8.              body {
    9.                  display: flex;
    10.                  flex-direction: column;
    11.                  align-items: center;
    12.              }
    13.              table {
    14.                  border-collapse: collapse;
    15.                  border: 1px solid;
    16.                  width: 50%;
    17.                  text-align: center;
    18.              }
    19.              th,
    20.              td {
    21.                  border: 1px solid;
    22.                  padding: 5px;
    23.              }
    24.              tr:first-child {
    25.                  background-color: #eee;
    26.              }
    27.          </style>
    28.      </head>
    29.      <body>
    30.          <h3>用户管理系统</h3>
    31.          <table>
    32.              <tr>
    33.                  <th>id</th>
    34.                  <th>姓名</th>
    35.                  <th>性别</th>
    36.                  <th>工资</th>
    37.                  <th>邮箱</th>
    38.                  <th>操作</th>
    39.              </tr>
    40.              <?php foreach ($staffs as $staff): ?>
    41.                  <tr>
    42.                      <td><?= $this->e($staff['sid']) ?></td>
    43.                      <td><?= $this->e($staff['name']) ?></td>
    44.                      <td><?= $this->e($staff['gender']) == 'male' ? '男' : '女' ?></td>
    45.                      <td><?= $this->e($staff['salary']) ?></td>
    46.                      <td><?= $this->e($staff['email']) ?></td>
    47.                      <td>
    48.                          <button>编辑</button>
    49.                          <button>删除</button>
    50.                      </td>
    51.                  </tr>
    52.              <?php endforeach ?>
    53.          </table>
    54.          <p>
    55.              <a href="">1</a>
    56.              <a href="">2</a>
    57.              <a href="">3</a>
    58.              <a href="">4</a>
    59.              <a href="">5</a>
    60.              <a href="">6</a>
    61.          </p>
    62.      </body>
    63.  </html>
  1. 5. 在`composer.json`中添加*autoload*,然后在控制台执行`composer dump`.注意,控制台路径要在当前目录下.
  2. ```json5
  3. {
  4.     "name": "zhang/null",
  5.     "description": "this is a test",
  6.     "require": {
  7.         "catfan/medoo": "^1.7",
  8.         "league/plates": "^3.4"
  9.     },
  10.     "autoload": {
  11.         "classmap": [
  12.             "application/controllers",
  13.             "application/models",
  14.             "application/views",
  15.             "core"
  16.         ]
  17.     }
  18. }
  1. 测试,在根目录下创建一个index.php进行测试,具体代码如下:
  1. <?php
  3. use testFrame\core\View;
  5. use models\StaffModel;
  7. use controllers\Container;
  8. use controllers\StaffController;
  10. require_once './vendor/autoload.php';
  13. $container = new Container();
  14. $container->bind('view', function () { return new View('application/views'); });
  15. $container->bind(
  16.     'model', function () {
  17.     $config = [
  18.         'database_type' => 'mysql',
  19.         'database_name' => 'phpedu',
  20.         'server'        => 'localhost',
  21.         'username'      => 'admin',
  22.         'password'      => '123456',
  23.     ];
  24.     return new StaffModel($config);
  25. }
  26. );
  28. $controller = new StaffController($container);
  29. echo $controller->index('staffs', ['sid', 'name', 'age', 'gender', 'salary', 'birthday'], ['LIMIT' => [20, 10]], 'staffs/list');

效果:
效果)

Correcting teacher：天蓬老师天蓬老师

Correction status：qualified

Teacher's comments：
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