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php综合练习--mymessbox--登录

作者：佚名      php网站开发编辑：admin      更新时间：2022-07-23
php综合练习--mymessbox--登录

登录页面：

<!doctype html><html lang="en"><head>    <meta charset="UTF-8">    <title>login</title>    <style>        body {            margin: 0;            padding:0;            background: #ccc;            font-family: '宋体', Simsun;        }        #wrap {            width:290px;            margin:17% auto;        }        #sid {            width: 154px;            margin-left: -6px;        }                #sub {            margin-left: 65px;        }        #res {            margin-left: 55px;        }        #vcode{            float:right;        }        #welcome {            font-size:20px;            font-family: Comic Sans MS;            padding-bottom:5px;        }    </style></head><body>    <div id="wrap">        <div id="welcome">Welcome to mymessbox!</div>        <form action="loginok.php" method="post">            选&nbsp;&nbsp;择：    <select name="loginname" id="sid">                            <option value="manager">管理员</option>                            <option value="user">用户</option>                        </select>            <br>            用户名：<input type="text" name="username" id="">            <br>            密&nbsp;&nbsp;码：<input type="passWord" name="password" id="">            <br>            验证码：<input type="text" name="vcode" id=""><img src="vcode.php" id="vcode">            <br>            <input type="submit" value="login" id="sub">            <input type="reset" value="reset" id="res">        </form>    </div></body></html>
login.php

登录页面处理：

<?php            session_start();            $loginname = $_POST['loginname'];            $username = $_POST['username'];            $password = $_POST['password'];            $vcode = strtolower($_POST['vcode']);            $rcode = strtolower($_SESSION['rcode']);            MySQL_connect("localhost", "root", "111");            mysql_select_db("mymessbox");            mysql_query("set names utf8");            if ($vcode !== $rcode) {                          echo "<script>alert('the code is wrong!');window.location.href='login.php'</script>";            } else {                          if ($loginname == 'manager') {                                       $sql1 = "select username,password from manager  where username='$username' and password='$password'";                                       $ret1 = mysql_query($sql1);                                       $i = mysql_num_rows($ret1);                                       if ($i >=1) {                                                    $_SESSION['mgusername'] = $username;                                                    echo "<script>alert('login success!');window.location.href='./manager/mg_index.php'</script>";                                       }  else {                                                    echo "<script>alert('Login failed!The username or password was wrong!Please login again!');window.location.href='login.php'</script>";                                       }                                                                    } else {                                       $sql2 = "select username,password from user  where username='$username' and password='$password'";                                       $ret2 = mysql_query($sql2);                                       $j = mysql_num_rows($ret2);                                       if ($j >=1) {                                                    $_SESSION['username'] = $username;                                                    echo "<script>alert('login success!');window.location.href='./user/index.php'</script>";                                       }  else {                                                    echo "<script>alert('Login failed!The username or password was wrong!!Please login again!');window.location.href='login.php'</script>";                                       }                            }            }
loginok.php

先发这两个吧，虽然还没有完成，还有很多漏洞百出的地方，但是我会一点一点去改。

希望哪个大神在看的时候，能多多指点。不胜感激！