数据对象映射模式(ORM) - 设计模式

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/u013862108/article/details/86635604

是将对象和数据存储映射起来，对一个对象的操作会映射为对数据存储的操作

将复杂的SQL语句映射成对象属性的操作。

index.php

//数据对象映射模式
$user = new \Imooc\User(1);
var_dump($user->id, $user->mobile, $user->name, $user->regtime);
$user->mobile = '13146105129';
$user->name = 'lisi';
$user->regtime = date('Y-m-d H:i:s');

User.php

<?php
/**
 * Created by PhpStorm.
 * User: zhaozhiliang
 * Date: 2019/1/11
 * Time: 下午10:53
 */

namespace Imooc;


class User
{
    public $id;
    public $name;
    public $mobile;
    public $regtime;
    public $serial_no;

    protected $db;
    function __construct($id)
    {
        $this->db = new \Imooc\Database\MySQLi();
        $this->db->connect('192.168.199.129', 'work','123qwe', 'test');
        $res = $this->db->query("select * from user where id={$id} limit 1");
        $data = $res->fetch_assoc();

        $this->id = $data['id'];
        $this->name = $data['name'];
        $this->mobile = $data['mobile'];
        $this->regtime = $data['regtime'];
        $this->serial_no = $data['serial_no'];
    }

    function __destruct()
    {
        $ret  = $this->db->query("update user set name='{$this->name}', mobile='{$this->mobile}', regtime='{$this->regtime}'
       ,serial_no='{$this->serial_no}' where id={$this->id}");
    }
}