PHP custom model addition, deletion, modification and query

<?php
namespace app\index\controller;

use app\common\model\User;
use app\common\model\UserInfo;

class Index
{
    public function index()
    {
        /*
        // 静态访问
        $user = User::get(1);
        // 获取一条记录的数据
        dump($user->getData());
        // 获取记录里面的某个属性值
        dump($user->name);

        // 助手方法
        dump(model(&#39;user&#39;)->find(1)->getData());

        // 直接实例化
        $user = new User();
        dump($user->find(1)->getData());
        */
        $user = UserInfo::get(1);
        dump($user->getData());

        $user = UserInfo::get(1);
        dump($user->getData());

        return "thinkphp5";
    }

    // 新增/更新 数据的方法
    public function saveData()
    {
        // 新增一条数据
//        $data = [
//            &#39;name&#39; => &#39;jikexueyuan&#39;,
//            &#39;password&#39; => md5(123456),
//            &#39;age&#39; => 18,
//            &#39;sex&#39; => "男",
//            &#39;status&#39; => 1,
//            &#39;create_time&#39; => time(),
//            &#39;update_time&#39; => 0,
//        ];

        $user = new User();
//        echo $user->save($data);

        // 新增多条数据
        for($i = 0 ; $i < 10 ; $i ++)
        {
            $data[$i] = [
                &#39;name&#39; => &#39;jikexueyuan&#39; . $i,
                &#39;password&#39; => md5(123456),
                &#39;age&#39; => $i,
                &#39;sex&#39; => "男",
                &#39;status&#39; => 1,
                &#39;create_time&#39; => time(),
                &#39;update_time&#39; => 0,
            ];
        }
        $user->saveAll($data);
    }

    // 数据更新
    public function updateData()
    {
        // 查询后进行更新操作
        $user = User::get(16);
        $user->name = &#39;wangjialin&#39;;
        echo $user->save();

        // 直接使用数据库类的更新方法update
        $user = new User();
        echo "return:".$user->where(&#39;id=18&#39;)->update([&#39;name&#39;=>&#39;wjl&#39;]);

        // saveAll方法可以用于批量的更新
        // [id=>1]
    }

    // 数据查询
    public function getDataList()
    {
        // 无条件查询所有的数据
//        $list = User::all();
//        foreach ($list as $key=>$val)
//        {
//            dump("id:".$val->id.",name:".$val->name . ",age:".$val->age);
//        }

        // 条件列表查询
        $list = User::all(&#39;18,22&#39;);
        foreach ($list as $key=>$val)
        {
            dump("id:".$val->id.",name:".$val->name . ",age:".$val->age);
        }

    }

    // 数据删除
    public function delData()
    {
        echo User::destroy(18);
        echo model(&#39;user&#39;)->where(&#39;id=16&#39;)->delete();
    }



}