TP5.1对登录的返回码优化

<?php
return [
    'code' => [
        'SUCCESS'                     => 1,
        'USER_LOGIN_VALIDATE_ERROR'   => -1000,
        'ERROR_NO_USER'               => -1001,
        'ERROR_USER_START'            => -1002,
        'ERROR_PASSWORD'              => -1003,
        'ERROR_LOGIN_EXCESS_TIME_OUT' => -1005,
    ],
    'info' => [
        1      => '操作成功',
        -1000  => '用户登录校验不成功',
        -1001  => '用户不存在',
        -1002  => '用户状态不对',
        -1003  => '用户密码错误',
        -1005  => '登录超过规定次数'
    ]
];

<?php
namespace app\behavior;
use Config;
class MessageBehavior
{
    public function run()
    {
        $codes = Config::get('message.code');
        foreach ($codes as $key => $value) {
            define($key,$value);
        }
    }
}

<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 咔咔
// +----------------------------------------------------------------------
// 应用公共文件
function ajaxRuturn($code,$data=[]){
    $result = ['code' => $code , 'message' => getMessage($code)];
    $result = (!empty($data)) ? $result['data'] = $data : $result;
    return $result;
}
function getMessage($code){
    $info = config('message.info');
    return (array_key_exists($code,$info) ? $info[$code] : '操作失败');
}

<?php
namespace app\service;
use app\model\user\User;
class UserService
{
    public function login($username,$password)
    {
        $user = User::where(['user_name'=>$username])->find();
        if(!$user){
            //用户名不存在
           return ERROR_NO_USER;
        }
        if($user->user_status != 1){
            // 用户是否被封
            return ERROR_USER_START;
        }
        if(!password_verify($password,$user->user_password)){
            // 密码错误，登录失败
            return ERROR_PASSWORD;
        }
        //登录成功
        return SUCCESS;
    }
}

<?php
namespace app\admin\controller;
use think\Controller;
use app\model\user\User;
use app\service\UserService;
use Request;
use Db,Log;
class Login extends Controller
{
    private $userService;
    /**
     * 初始化
     */
    public function initialize()
    {
        $this->userService = new UserService;
    }
    /**
     * 登录
     * @return \think\Response
     */
    public function login()
    {
        if(Request::isPost()){
            $username = Request::param('username');
            $password = Request::param('password');
            return ajaxRuturn($this->userService->login($username,$password));
        }
        return $this->fetch();
    }
}