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PHP迷你MVC小框架实现步骤
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迷你MVC小框架文件目录结构

  • app 应用目录
    • controller 控制器目录
    • models 模型目录
    • views 视图目录
  • core 核心目录

实现步骤

1.安装第三方包catfan/medoo与league/plates

  • catfan/medoo 数据库框架:composer require catfan/medoo
  • league/plates 模板框架: composer require league/plates

2.core目录新建Model与View文件

  • 模型类:Model.php

    1. namespace core;
    2. use Medoo\Medoo;
    3. class Model extends Medoo
    4. {
    5. public function __construct()
    6. {
    7. parent::__construct([
    8. 'database_type' => 'mysql',
    9. 'database_name' => 'phpedu',
    10. 'server' => 'localhost',
    11. 'username' => 'root',
    12. 'password' => '123456'
    13. ]);
    14. }
    15. public function first() {
    16. // 自定义方法
    17. }
    18. }
  • 视图类:View.php

    1. namespace core;
    2. use League\Plates\Engine;
    3. class View extends Engine
    4. {
    5. public $templates;
    6. public function __construct($path)
    7. {
    8. $templates = parent::__construct($path);
    9. }
    10. }

3.在app目录下新建controllers models views 目录

  • controllers目录:新建UserController.php文件,获取用户数据赋值给模板
  1. namespace controllers;
  2. class UserController
  3. {
  4. public $model;
  5. public $view;
  6. public function __construct($model,$view)
  7. {
  8. $this->model = $model;
  9. $this->view = $view;
  10. }
  11. public function index()
  12. {
  13. return __METHOD__;
  14. }
  15. public function select()
  16. {
  17. // 获取数据
  18. $users = $this->model->select('users',['sid','name','gender','salary','email'],['salary[>=]'=>5000,'LIMIT'=> 8]);
  19. // 模板赋值
  20. return $this->view->render('users/list',['users'=> $users]);
  21. }
  22. }
  • Model目录:新建UserModel.php获取用户表数据
  1. namespace models;
  2. use core\Model;
  3. class UserModel extends Model
  4. {
  5. public function __construct()
  6. {
  7. parent::__construct();
  8. }
  9. }
  • View目录:新建目录users 在新建目录下创建list.php文件显示用户数据视图
  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="UTF-8">
  5. <meta http-equiv="X-UA-Compatible" content="IE=edge">
  6. <meta name="viewport" content="width=device-width, initial-scale=1.0">
  7. <title>用户信息</title>
  8. <style>
  9. body {
  10. display: flex;
  11. flex-direction: column;
  12. align-items: center;
  13. }
  14. table {
  15. border-collapse: collapse;
  16. border: 1px solid;
  17. width: 50%;
  18. text-align: center;
  19. }
  20. th,
  21. td {
  22. border: 1px solid;
  23. padding: 5px;
  24. }
  25. tr:first-child {
  26. background-color: lightcoral;
  27. }
  28. </style>
  29. </head>
  30. <body>
  31. <h3>用户管理系统</h3>
  32. <table>
  33. <tr>
  34. <th>UID</th>
  35. <th>用户名</th>
  36. <th>性别</th>
  37. <th>工资</th>
  38. <th>邮箱</th>
  39. <th>操作</th>
  40. </tr>
  41. <?php foreach ($users as $user): ?>
  42. <tr>
  43. <td><?=$this->e($user['sid'])?></td>
  44. <td><?=$this->e($user['name'])?></td>
  45. <td><?=$this->e($user['gender']) == 'male' ? '男' : '女'?></td>
  46. <td><?=$this->e($user['salary'])?></td>
  47. <td><?=$this->e($user['email'])?></td>
  48. <td><button>编辑</button><button>删除</button></td>
  49. </tr>
  50. <?php endforeach ?>
  51. </table>
  52. <p>
  53. <a href="">1</a>
  54. <a href="">2</a>
  55. <a href="">3</a>
  56. </p>
  57. </body>
  58. </html>

3.composer将控件映射到目录

  1. {
  2. "require": {
  3. "catfan/medoo": "^1.7",
  4. "league/plates": "^3.4"
  5. },
  6. "autoload": {
  7. "psr-4": {
  8. "models\\": "app/models",
  9. "views\\": "app/views",
  10. "controllers\\": "app/controllers",
  11. "core\\": "core"
  12. }
  13. }
  14. }
  • 修改完成在终端运行composer dump更新自动加载

4.index.php入口文件

  1. // 入口文件
  2. use controllers\UserController;
  3. use models\UserModel;
  4. use core\View;
  5. require __DIR__ . '/vendor/autoload.php';
  6. // 模型
  7. $model = new UserModel();
  8. // 视图
  9. $view = new View('app/views');
  10. // 控制器
  11. $controller = new UserController($model,$view);
  12. print_r($controller->select());

运行结果截图:


总结:
1.使用composer第三方包依赖快速创建Model与View
2.创建core核心文件目录
3.创建App目录,严格按照MVC架构创建三个文件夹Models、Views、Controllers
4.composer.js映射autoload目录时需注意在其他文件use导入时的名称

Correcting teacher:天蓬老师天蓬老师

Correction status:qualified

Teacher's comments:
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