PHP迷你MVC小框架实现步骤 - PHP

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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

  namespace core;
  use Medoo\Medoo;
  class Model extends Medoo
  {
  public function __construct()
  {
      parent::__construct([
          'database_type' => 'mysql',
          'database_name' => 'phpedu',
          'server' => 'localhost',
          'username' => 'root',
          'password' => '123456'
      ]);
  }
  public function first() {
      // 自定义方法
  }
  }

视图类：View.php

  namespace core;
  use League\Plates\Engine;
  class View extends Engine
  {
  public $templates;
  public function __construct($path)
  {
      $templates = parent::__construct($path);
  }
  }

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

namespace controllers;
class UserController
{
    public $model;
    public $view;
    public function __construct($model,$view)
    {
        $this->model = $model;
        $this->view = $view;
    }
    public function index()
    {
        return __METHOD__;
    }
    public function select()
    {
        // 获取数据
        $users = $this->model->select('users',['sid','name','gender','salary','email'],['salary[>=]'=>5000,'LIMIT'=> 8]);
        // 模板赋值
        return $this->view->render('users/list',['users'=> $users]);
    }
}

Model目录：新建UserModel.php获取用户表数据

namespace models;
use core\Model;
class UserModel extends Model
{
    public function __construct()
    {
        parent::__construct();
    }
}

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

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>用户信息</title>
    <style>
    body {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    table {
        border-collapse: collapse;
        border: 1px solid;
        width: 50%;
        text-align: center;
    }
    th,
    td {
        border: 1px solid;
        padding: 5px;
    }
    tr:first-child {
        background-color: lightcoral;
    }
    </style>
</head>
<body>
    <h3>用户管理系统</h3>
    <table>
        <tr>
            <th>UID</th>
            <th>用户名</th>
            <th>性别</th>
            <th>工资</th>
            <th>邮箱</th>
            <th>操作</th>
        </tr>
        <?php foreach ($users as $user): ?>
        <tr>
            <td><?=$this->e($user['sid'])?></td>
            <td><?=$this->e($user['name'])?></td>
            <td><?=$this->e($user['gender']) == 'male' ? '男' : '女'?></td>
            <td><?=$this->e($user['salary'])?></td>
            <td><?=$this->e($user['email'])?></td>
            <td><button>编辑</button><button>删除</button></td>
        </tr>
        <?php endforeach ?>
    </table>
    <p>
            <a href="">1</a>
            <a href="">2</a>
            <a href="">3</a>
    </p>
</body>
</html>

3.composer将控件映射到目录

{
    "require": {
        "catfan/medoo": "^1.7",
        "league/plates": "^3.4"
    },
    "autoload": {
        "psr-4": {
            "models\\": "app/models",
            "views\\": "app/views",
            "controllers\\": "app/controllers",
            "core\\": "core"
        }
    }
}

修改完成在终端运行composer dump更新自动加载

4.index.php入口文件

// 入口文件
use controllers\UserController;
use models\UserModel;
use core\View;
require __DIR__ . '/vendor/autoload.php';
// 模型
$model = new UserModel();
// 视图
$view = new View('app/views');
// 控制器
$controller = new UserController($model,$view);
print_r($controller->select());