您的位置 首页 php

利用会话控制实现页面登录与注销功能

首先是一个普通的登陆页面实现

f0f7c308a09467c2561bc5f99db93f0.png

登录页面login.php

<!DOCTYPE html><html>    <head>        <title>登陆页</title>        <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">    </head>    <body>        <div>            <div class="card col-12 mt-5">                <div>                    <h4>                        用户登录                    </h4>                    <div class="col-12 mt-4 d-flex justify-content-center">                        <form method="post" action="action.php">                            <input type="hidden" name="action" value="login">                            <div>                                <label for="username">用户名</label>                                <input type="text"                                       class="form-control"                                       id="username"                                       name="username"                                       placeholder="请输入用户名">                            </div>                            <div>                                <label for="password">密码</label>                                <input type="password"                                       class="form-control"                                       id="password"                                       name="password"                                       placeholder="请输入密码">                            </div>                            <div class="form-group form-check">                                <input type="checkbox"                                       class="form-check-input"                                       id="remember"                                       name="remember">                                <label                                       for="remember">                                    在这台电脑上记住我的登录状态                                </label>                            </div>                            <button type="submit"                                    class="btn btn-primary">                                登录                            </button>                        </form>                    </div>                </div>            </div>        </div>    </body></html>

登录功能实现action.php

  <?php    session_start();    switch ($_REQUEST['action']) {        case 'login':            $username = $_POST['username'];            $password = $_POST['password'];            $remember = $_POST['remember'];            $user = getUser();            if ($username != $user['username']) {                // 登录失败                sendLoginFailedResponse();            }            if ($password != $user['password']) {                // 登录失败                sendLoginFailedResponse();            }            if ($remember) {                rememberLogin($username);            }            $_SESSION['username'] = $username;            header("location:index.php");            break;        case 'logout':            session_unset();            setcookie("username", "", time() - 1);            header("location:login.php");            break;    }    function getUser() {        return array(            "username" => "cyy",            "password" => "123456"        );    }    function sendLoginFailedResponse() {        $response = "<script>    alert('用户名或密码错误!');    window.location='login.php';    </script>";        echo $response;        die;    }    function rememberLogin($username) {        setcookie("username", $username, time() + 7 * 24 * 3600);    }

首页index.php

a5e11cb265534246d24e003fd92e44d.png

<?php    session_start();    if (rememberedLogin()) {        $_SESSION['username'] = $_COOKIE['username'];    }    if (!hasLoggedIn()) {        header("location:login.php");        die;    }    function hasLoggedIn() {        return isset($_SESSION['username']) && validateUsername($_SESSION['username']);    }    function validateUsername($username) {        return $username == "cyy";    }    function rememberedLogin() {        return isset($_COOKIE['username']) && validateUsername($_COOKIE['username']);    }    ?>    <!DOCTYPE html>    <html>        <head>            <title>主页</title>            <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">        </head>        <body>            <div>                <nav class="navbar navbar-light bg-light">                    <a>                        使用 Cookie 和 Session 实现会话控制                    </a>                    <a href="action.php?action=logout">                        <button class="btn btn-outline-danger my-2 my-sm-0"                                type="button">                            注销                        </button>                    </a>                </nav>                <div class="d-flex justify-content-around mt-5">                    <div class="card col-5">                        <div>                            <h5>                                会话控制实战内容一                            </h5>                            <h6 class="card-subtitle mb-2 text-muted">                                SESSION 部分                            </h6>                            <p>                                实现用户认证功能,用户登录、退出与身份识别                            </p>                        </div>                    </div>                    <div class="card col-5">                        <div>                            <h5>                                会话控制实战内容二                            </h5>                            <h6 class="card-subtitle mb-2 text-muted">                                COOKIE 部分                            </h6>                            <p>                                实现登录记住用户功能,七天免登录认证                            </p>                        </div>                    </div>                </div>                <div class="d-flex justify-content-around mt-4">                    <div class="card col-5">                        <div>                            <h5>                                会话控制实战内容一                            </h5>                            <h6 class="card-subtitle mb-2 text-muted">                                SESSION 部分                            </h6>                            <p>                                实现用户认证功能,用户登录、退出与身份识别                            </p>                        </div>                    </div>                    <div class="card col-5">                        <div>                            <h5>                                会话控制实战内容二                            </h5>                            <h6 class="card-subtitle mb-2 text-muted">                                COOKIE 部分                            </h6>                            <p>                                实现登录记住用户功能,七天免登录认证                            </p>                        </div>                    </div>                </div>            </div>        </body>    </html>

接下来是会话控制实例:许愿墙源码

许愿墙首页index.php

b97957d04de2f0a1cb2619e252c8c22.png

  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">    <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">    <head>        <meta http-equiv="Content-Type" content="text/html;charset=UTF-8">        <title>许愿墙</title>        <link rel="stylesheet" href="Css/index.css" />        <script type="text/javascript" src='Js/jquery-1.7.2.min.js'></script>        <script type="text/javascript" src='Js/index.js'></script>    </head>    <body>        <div id='top'>            <a href="wish.php"><span id='send'></span></a>        </div>        <div id='main'>            <?php            //连接数据库            $connection=mysqli_connect('127.0.0.1','root','123456');            if(mysqli_connect_error()){                die(mysqli_connect_error());            }            mysqli_select_db($connection,'wall');            mysqli_set_charset($connection,'utf8');            $sql="SELECT * FROM wall";            $result=mysqli_query($connection,$sql);            //显示留言            while($row=mysqli_fetch_assoc($result)){                $wish_time=$row['wish_time'];                $time=date('Y-m-d H:i:s',$wish_time);                $id=$row['id'];                //判断留言板颜色                switch($row['color']){                    case 'a1':                        echo "<dl class='paper a1'>";                        break;                    case 'a2':                        echo "<dl class='paper a2'>";                        break;                    case 'a3':                        echo "<dl class='paper a3'>";                        break;                    case 'a4':                        echo "<dl class='paper a4'>";                        break;                    case 'a5':                        echo "<dl class='paper a5'>";                        break;                    default:                        echo "<dl class='paper a1'>";                        break;                }                echo "<dt>";                echo "<span>{$row['name']}</span>";                echo "<span>No.{$row['id']}</span>";                echo "</dt>";                echo "<dd>{$row['content']}</dd>";                echo "<dd>";                echo "<span>{$time}</span>";                echo "<a href=\"delete.php?num={$id}\"></a>";                echo "</dd>";                echo "</dl>";            }            mysqli_close($connection);            ?>        </div>            <!--[if IE 6]>        <script type="text/javascript" src="./Js/iepng.js"></script>        <script type="text/javascript">            DD_belatedPNG.fix('#send,#close,.close','background');        </script>    <![endif]-->    </body>    </html>

添加愿望页面wish.php

071944310073a0de97097b3b9914ca4.png

<!DOCTYPE  >    <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">    <head>        <meta http-equiv="Content-Type" content="text/html;charset=UTF-8">        <title>许愿墙</title>        <link rel="stylesheet" href="Css/index.css" />        <script type="text/javascript" src='Js/jquery-1.7.2.min.js'></script>        <script type="text/javascript" src='Js/index.js'></script>        <style type="text/css">            #content {                width: 638px;                height:650px;                margin:0 auto;                margin-top:100px;                /*background-color:#F0FAFF;                border:2px solid #C9F;*/            }            #content .c-top{                width: 638px;                height: 80px;                background: url(./Images/content_top.jpg) no-repeat;            }            #content .c-bottom{                width: 638px;                height: 50px;                background: url(./Images/content_bottom.jpg) no-repeat;            }            .c-content{                width: 638px;                height: 470px;                background: url(./Images/content_bg.jpg) repeat;            }            .papercolor{                width:588px;                height: 60px;                margin-left: 35px;                padding-top:15px;            }            .p-left{                float: left;                width: 120px;                line-height: 27px;            }p-left            .p-right{                float: left;                        }            .color330{                float: left;                margin-left: 20px;                border-right: #404040 1px solid;                 border-top: #404040 1px solid;                  border-left:#404040 1px solid;                width: 25px;                cursor: pointer;                border-bottom: #404040 1px solid;                height: 25px;            }            .papercontent{                width: 588px;                height: 210px;                margin-left: 35px;            }            .left{                width: 294px;                height:100px;                float: left;            }            .right{                width: 294px;                height:100px;                float: left;            }            .left-top{                margin-bottom: 10px;            }            .left-bottom{            }            .right-top{                margin-bottom: 10px;            }            .right-bottom{                width:200px;                height:150px;                border: 1px solid orange;                margin-left:20px;                background-color:#E8DEFF;            }            .name{                clear: both;                width: 588px;                height: 50px;                margin-left: 35px;                margin-top:10px;            }            .name-left{                width:60px;                height: 26px;                line-height: 26px;                float: left;            }            .name-right{                float: left;            }            .name-right input{                width: 200px;                height: 26px;            }            .code{                clear: both;                width: 588px;                height: 50px;                margin-left: 35px;                margin-top:10px;            }            .code-left{                width:50px;                height: 26px;                line-height: 26px;                float: left;            }            .code-content{                width:100px;                float: left;            }            .code-content input{                width: 100px;                height: 26px;            }            .code-right{                float:left;                margin-left: 10px;            }            .code-right input{                width: 40px;                height: 26px;                background-color: pink;            }            .submit{                width:174px;                height:38px;                background: url(./Images/pic_submit.gif) no-repeat;                margin-left:217px;            }            .shuname{                width:80px;                height:25px;                margin-left: 120px;            }            span{                font-size: 13px;                font-family: "微软雅黑";            }        </style>            </head>    <body>        <div id='top'></div>        <div id="content">            <div></div>            <form action="add.php" method="post" id="myfrom">                <div>                    <div>                        <div>                            <span>请选择纸条颜色:</span>                        </div>                        <div>                            <div id="a1" style="background:#FFDFFF"></div>                              <div id="a2" style="background:#C3FEC0"></div>                              <div id="a3" style="background:#FFE3b8"></div>                              <div id="a4" style="background:#CEECFF"></div>                             <div id="a5" style="background:#E8DEFF"></div>                             <input type="hidden" value="" name="idvalue" id="idvalue">                                           </div>                    </div>                    <div>                        <div>                            <div>                                <span>输入你的祝福纸条内容:</span>                            </div>                            <div>                                <textarea cols="25" rows="8" id="textfont" name="textfont"></textarea>                            </div>                        </div>                        <div>                            <div>                                <span>纸条效果预览:</span>                            </div>                            <div>                                <div style="height:15px"><span>第x条</span><br/></div>                                 <div style="height:100px;margin-top:10px"><span id="font"></span></div>                                 <div><span id="name">署名:</span></div>                                        </div>                        </div>                    </div>                    <div>                        <div>                            <span>您的署名:</span>                        </div>                        <div>                            <input id="nameright" type="text" name="name" value="">                        </div>                    </div>                    <div>                        <div>                            <span>验证码:</span>                        </div>                        <div>                            <input id="codeone" type="text" name="recode" value=""><span></span>                        </div>                        <div>                            <input id="codetwo" type="text" name="code" value="<?php echo mt_rand(1000,9999); ?>" readonly>                        </div>                                    </div>                    <!--<div><button type="submit" style="width:174px;height:38px"></button></div>-->                    <input style="BORDER-RIGHT: #f33b78 1px outset; BORDER-TOP: #f33b78 1px outset; FONT-WEIGHT: bold; BORDER-LEFT: #f33b78 1px outset; COLOR: #ffffff; BORDER-BOTTOM: #f33b78 1px outset; BACKGROUND-COLOR: #70ae0b;margin-left: 225px" type="submit" value="→ 开始贴许愿小纸条 ←" name="submit" id="submit">                                            <a href="index.php"><input type="button" name="Submit2" value="返回"></a>                    </div>            </form>            <hr/ style="color:orange;width:550">            <div></div>        </div>    <!--[if IE 6]>        <script type="text/javascript" src="./Js/iepng.js"></script>        <script type="text/javascript">            DD_belatedPNG.fix('#send,#close,.close','background');        </script>    <![endif]-->        <script type="text/javascript">            //改变颜色            $(".color330").click(function(){                            var value=$(this).css("background-color");                var idvalue=$(this).attr("id");                console.log(idvalue);                $("#idvalue").attr("value",idvalue);                $(".right-bottom").css("background-color",value);            })            //改变值触发的事件            var textfont = document.getElementById('textfont');            var font = document.getElementById('font');            textfont.onchange=function(){                font.innerHTML=textfont.value;                        }            //改变值触发的事件            var nameright = document.getElementById('nameright');            nameright.onchange=function(){                document.getElementById("name").innerText="署名: "+nameright.value;                }                        //在填写完毕验证码之后验证是否一致            var codeone = document.getElementById('codeone');            var codetwo = document.getElementById('codetwo');            //表单时区焦点事件            codeone.onblur=function(){                //验证两次验证码是否一致                if(codeone.value != codetwo.value){                    this.nextSibling.innerHTML='验证码不一致!'                    this.nextSibling.style.color='red';                }            }            $( '#submit' ).click( function () {                window.location.href="add.php";             } );                        </script>    </body>    </html>

新增愿望实现add.php

    <?php    // 获取表单提交数据    $name=$_POST['name'];    $textfont=$_POST['textfont'];    $wish_time=time();    $color=$_POST['idvalue'];    // 数据库操作    $connection=mysqli_connect('127.0.0.1','root','123456');    if(mysqli_connect_error()){        die(mysqli_connect_error());    }    mysqli_select_db($connection,'wall');    mysqli_set_charset($connection,'utf8');    $sql="INSERT INTO wall(content,name,wish_time,color) VALUES('$textfont','$name',$wish_time,'$color')";    $result=mysqli_query($connection,$sql);    if($result){        echo '<script>alert("发布成功!");document.location = "index.php";</script>';    }else{        echo '<script>alert("发布失败!");document.location = "index.php";</script>';    }    mysqli_close($connection);    ?>

删除愿望delete.php

0d6679230ab5a6d2b4ea8e2e1c8c401.png

    <?php    //接受要删除的留言id    $num=$_GET['num'];    // 数据库操作    $connection=mysqli_connect('127.0.0.1','root','123456');    if(mysqli_connect_error()){        die(mysqli_connect_error());    }    mysqli_select_db($connection,'wall');    mysqli_set_charset($connection,'utf8');    $sql="DELETE FROM wall WHERE id=$num";    $result=mysqli_query($connection,$sql);    if($result){        echo '<script>alert("删除成功!");document.location = "index.php";</script>';    }else{        echo '<script>alert("删除失败!");document.location = "index.php";</script>';    }    mysqli_close($connection);    ?>

附上数据库结构wall.sql

-- phpMyAdmin SQL Dump-- version 4.8.5-- https://www.phpmyadmin.net/---- 主机: localhost-- 生成日期: 2019-08-18 22:08:38-- 服务器版本: 8.0.12-- PHP 版本: 7.3.4SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";SET AUTOCOMMIT = 0;START TRANSACTION;SET time_zone = "+00:00";/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;/*!40101 SET NAMES utf8mb4 */;---- 数据库: `wall`---- ------------------------------------------------------------ 表的结构 `wall`--CREATE TABLE `wall` (  `id` tinyint(4) NOT NULL COMMENT '留言编号',  `content` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '留言内容',  `name` varchar(20) NOT NULL DEFAULT '匿名的宝宝' COMMENT '署名',  `wish_time` int(11) NOT NULL COMMENT '留言时间',  `color` char(2) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '留言背景色') ENGINE=InnoDB DEFAULT CHARSET=utf8;---- 转存表中的数据 `wall`--INSERT INTO `wall` (`id`, `content`, `name`, `wish_time`, `color`) VALUES(17, '111', '111', 1566136880, 'a1'),(19, '333', '333', 1566136894, 'a3'),(21, '555', '555', 1566136911, 'a5'),(24, '9999', '9999', 1566137235, 'a4');---- 转储表的索引------ 表的索引 `wall`--ALTER TABLE `wall`  ADD PRIMARY KEY (`id`);---- 在导出的表使用AUTO_INCREMENT------ 使用表AUTO_INCREMENT `wall`--ALTER TABLE `wall`  MODIFY `id` tinyint(4) NOT NULL AUTO_INCREMENT COMMENT '留言编号', AUTO_INCREMENT=26;COMMIT;/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

知识点补充:

【使用 COOKIE 实现会话控制】

用于存储用户关键信息

保存在客户端(浏览器)

通过 HTTP 请求/响应头传输

8901867490ea66617009d04354a7f18.png

【COOKIE 失效】

● COOKIE过期

● 用户手动删除 COOKIE

● 服务器清除 COOKIE 的有效性

【使用 SESSION 实现会话控制】

● 用于存储用户相关信息

● 保存在服务端

● 通过保存在客户端的 SESSION ID 来定位 SESSION 内容

e4272ae180cffe97c1ad9753c4cbde0.png

【SESSION 失效/清除】

● COOKIE过期(关闭浏览器)

● 用户手动删除 COOKIE

● 服务端删除 SESSION 文件或清空 SESSION 内容

更多相关php知识,请访问php教程!

以上就是利用会话控制实现页面登录与注销功能的详细内容,更多请关注求知技术网其它相关文章!

文章来源:智云一二三科技

文章标题:利用会话控制实现页面登录与注销功能

文章地址:https://www.zhihuclub.com/2105.shtml

关于作者: 智云科技

热门文章

发表评论

您的电子邮箱地址不会被公开。

网站地图