12月6日_自己实现一个小型mvc框架 - 九期线上班

使用mvc做页面展示

数据表customer

目录

Db.php

<?php
namespace mvc1\model;
use PDO;
class Db
{
    private $dbConfig = [
        'db'=>'mysql',
        'host'=>'localhost',
        'username'=>'root',
        'password'=>'root',
        'dbname'=>'mydb'
    ];
    private static $instance = null;
    private $conn = null;
    private function __construct($params=[]){
    //初始化参数
    $this->dbConfig = array_merge($this->dbConfig,$params);
    //连接数据库
    $this->connect();
    }
    //禁止克隆
    private function __clone(){
    }
    //创建唯一实例
    public static function getInstance($params){
        if(!self::$instance instanceof self){
            self::$instance = new self($params);
        }
        return self::$instance;
    }
    private function connect(){
        //连接数据库
        try{
            $dsn = "{$this->dbConfig['db']}:host={$this->dbConfig['host']};dbname={$this->dbConfig['dbname']}";
        //PDO连接对象
        $this->conn = new PDO($dsn,$this->dbConfig['username'],$this->dbConfig['password']);
        }catch(PDOException $e){
            die('数据库连接失败'.$e->getMessage());
        }
    }
    //查询全部数据
    public function selectAll($sql){
        return $this->conn->query($sql)->fetchAll(PDO::FETCH_ASSOC);
    }
}

Model.php

<?php
namespace mvc1\model;
include 'Db.php';
class Model
{
    protected $db = null;
    public $data = null;
    public function __construct(){
        $this->init();
    }
    private function init(){
        $dbConfig = [
        'username'=>'root',
        'password'=>'12341234',
        'dbname'=>'php_2019',
        ];
        //Db类实例
        $this->db = Db::getInstance($dbConfig);
    }
    //获取数据表全部数据
    public function getAll($tableName){
        $sql = "SELECT * FROM .$tableName;";
        return $this->data = $this->db->selectAll($sql);
    }
}

CustomerModel.php

<?php
namespace mvc1\model;
require 'Model.php';
class CustomerModel    extends Model
{
    private $cid;
    private $name;
    private $password;
    private $sex;
    private $birth;
    private $level;
    private $is_vip;
    private $createtime;
    private $updatetime;
    private $status;
    private $del;
    public function __get($field){
        return $this->$field;
    }
    public function __set($field,$value){
        $this->$field = $value;
    }
    public function __construct(){
        parent::__construct();
        //自动转换 时间日期
        $this->birth = date('Y-m-d' , $this->birth);
        $this->createtime = date('Y-m-d' , $this->createtime);
        $this->updatetime = date('Y-m-d' , $this->updatetime);
        //自动转换 性别
        if($this->sex == 1 || $this->sex == 0){
            $this->sex = $this->sex ? '男' : '女';
        }else{
            $this->sex = '未知';
        }
    }
}

CustomerController.php

<?php
namespace mvc1\controller;
use mvc1\model\CustomerModel;
use mvc1\view\CustomerView;
class CustomerController
{    
    protected $customerModel;
    protected $customerView;
    public function __construct(customerModel $customerModel,customerView $customerView){
        $this->customerModel = $customerModel;
        $this->customerView = $customerView;
    }
    //首页
    public function index(){
        $data = $this->customerModel->getAll('customer');
        return $this->customerView->show($data);
    }
}

CustomerView.php

<?php
namespace mvc1\view;
class CustomerView
{
    public function show($data){
        $table = '<table>';
        $table .= '<caption>客户信息表</caption>';
        $table .= '<tr><th>ID</th><th>客户</th><th>性别</th><th>生日</th><th>等级</th><th>vip</th><th>创建时间</th></tr>';
        foreach ($data as $customer){
            $table .='<tr>';
            $table .='<td>'. $customer['cid'] .'</td>';
            $table .='<td>'. $customer['name'] .'</td>';
            $table .='<td>'. $customer['sex'] .'</td>';
            $table .='<td>'. date('Y-m-d' ,$customer['birth']) .'</td>';
            $table .='<td>'. $customer['level'] .'</td>';
            $table .='<td>'. $customer['is_vip'] .'</td>';
            $table .='<td>'. date('Y-m-d' ,$customer['createtime']) .'</td>';
            $table .='</tr>';
        }
        $table .= '</table>';
        return $table;
    }
}
echo '
    <style>
    table {
        border-collapse: collapse;
        border: 1px solid;
        width: 500px;
        height: 150px;
        margin:auto;
    }
    caption {
        font-size:1.2rem;
        margin-bottom: 10px;
    }
    tr:first-of-type{
        background-color:lightblue;
    }
    td,th{
        border:1px solid
    }
    td:first-of-type{
        text-align:center;
    }
    </style>
';

autoload.php

<?php
spl_autoload_register(function($className){
    $path = str_replace('\\', '/', $className);
    require dirname(__DIR__).DIRECTORY_SEPARATOR.$path.'.php';
});

index.php

<?php
require __DIR__.'/autoload.php';
use mvc1\model\CustomerModel;
use mvc1\view\CustomerView;
use mvc1\controller\CustomerController;
//客户端调用
$customerModel = new CustomerModel();
$customerView = new CustomerView();
$customerController = new CustomerController($customerModel,$customerView);
echo $customerController->index();

页面展示

总结：自己要写一个小框架给自己用还是挺难实现的。脑子里有想法又很乱。只做了基于mvc的展示，很多功能都没有做。