<?php
/*** Created by PhpStorm.* User: finejade* Date: 2023-10-18* Time: 11:08*/
session_start();include_once('header.php');
include_once('connect.php');
include_once('common.php');
include_once('redis.php');
try {// 常量 用户错误次数记录define("USER_LOGIN_ERROR_NUM", 'user_login_error_num');//错误上线，超过明天登录define("ERROR_COUNT", 5);$username = isset($_POST['username']) ? $_POST['username'] : '';$password = isset($_POST['username']) ? $_POST['password'] : '';$captcha = isset($_POST['captcha']) ? $_POST['captcha'] : '';if ($_SERVER['REQUEST_METHOD'] == 'POST') {$ulen = strlen($username);$plen = strlen($password);if ($_SESSION ["captcha"] != $captcha) {return error('图形验证码不正确');}if (!preg_match("/^[\w]+$/", $username) || $ulen < 6 || $ulen > 15) {return error('用户名只能是字母或数字，且长度为6到15个字符');}if (!preg_match("/^[\w]+$/", $password) || $plen < 6 || $plen > 15) {return error('密码只能是字母或数字，且长度为6到15个字符');}$sql = sprintf("SELECT id,username,password,salt FROM m_user where `username`='%s' limit 1", $username);$result = $conn->query($sql);$arr = [];if ($result->num_rows <= 0) {return error('用户名不存在，请核实后重新登陆');}$user = $result->fetch_assoc();if ($redis->exists(USER_LOGIN_ERROR_NUM . '_' . $user['id'])) {if ($redis->get(USER_LOGIN_ERROR_NUM . '_' . $user['id']) >= ERROR_COUNT) {return error('您登陆的错误次数已超过' . ERROR_COUNT . '次，请明天再试');}};$pwd = $user['password'];$sub_time = strtotime(date('Y-m-d', strtotime('+1 day'))) - time();if ($pwd != encryption($password, $user['salt'])) {//如果密码不对，则加入redis 密码错误限制，到达5次，则次日才能登录if ($redis->exists(USER_LOGIN_ERROR_NUM . '_' . $user['id'])) {$redis->incr(USER_LOGIN_ERROR_NUM . '_' . $user['id']);} else {$redis->set(USER_LOGIN_ERROR_NUM . '_' . $user['id'], 1, $sub_time);}return error('用户名或密码错误');}$user_info = [];$user_info['id'] = $user['id'];$user_info['username'] = $user['username'];$user_info['nickname'] = $user['nickname'];$_SESSION['user_id'] = $user['id'];$_SESSION['username'] = $user['username'];$_SESSION['nickname'] = $user['nickname'];//如果登录成功，删除该用户错误次数限制$redis->del(USER_LOGIN_ERROR_NUM . '_' . $user['id']);$conn->close();return success($user_info, '登录成功');}} catch (Exception $exception) {echo error($exception->getMessage());
}?>

redis配置文件

$redis = new Redis();
$redis->connect('127.0.0.1', 6379); // 连接到Redis
$redis->auth('123456789');
$redis->select(0);