doufire_php/app/api/service/UserService.php

<?php
namespace app\api\service;

use app\api\model\User;
use think\Db;
/**
 * 用户表
 */
class UserService {
    public function mktoken(){
        // jwt  
        $guid = get_guid_v4();
        $dtime = time();
        return md5(uniqid($guid.$dtime,true));
    }
    /**
     * 用户登录操作,传入用户查询后才对比密码
     */
    public function userlogin(string $uname,string $pass){
        // query db
        $drs = User::where(['nick_name'=>$uname])->find();
        // 异常处理
        if(!isset($drs)){
            throwError('用户不存在');
            return false;
        }else{
            // 对比密码
            if($drs['password'] != $pass){
                throwError('密码错误');
                return false;
            }
            // 返回用户信息
            return $drs;
        }
        return false;
    }
}