加PHP用户登陆代码

慢漫曼蔓 2022-09-05 原文

<!DOCTYPE html>
<html>
<head>
    <title>登录</title>
    <meta name="content-type"; charset=UTF-8">
  <style>
    .zhong{
        width: 100%;
        height: 100px;
    }
    .xia{
        width: 100%;
        height: 600px;
        background: url(C:/Users/lou/Desktop/JC-T/denglu.jpg) ;
        background-size: ;
    }
    a{
        text-decoration:none;
    }
    .lable{
        position:relative;
        width:280px;
        height: 300px;
        background: white;
        left: 420px;
        top:100px;
        float: left;
    }
    .ding{
        position:relative;
        left: 160px;
        top:122px;
        font-size: 70px;
        color: white;
        font-weight: bold;
        float: left;
    }
    a{
                color:#9D9D9D;
                text-decoration:none;
            
            }
            a:visited{
                color:#9D9D9D;
            }
    input,submit{
        background: #9D9D9D;
        border:0;
        
    }
    p{
        margin-left: 30px;
    }
    h1{
      font-family: "Alex Brush";
      font-size:55px;
      color:darkgreen;
    }
    table{
    border-spacing:7px;
}
  </style>
</head>
<body>

    <!--头部-->
    <div class="zhong">
        <br>
        &emsp;&emsp;&emsp;&emsp;
        <a href="" style="color:blue;font-size:32px">DDing叮叮</a>
        <br>
    </div>
    <!--中部-->
    <div class="xia">
        <div class="ding">
    <p>买书就找叮叮</p>
        </div>
        <div class="lable">
        <form id="loginform" action="loginaction.php" method="post">
            <table border="0" align="center">
            <br><br><br>
                <tr>
                    <td>用户名：</td>
                    <td>
                        <input type="text" id="name" name="username" required="required"
                               value="<?php echo isset($_COOKIE["wang"])?$_COOKIE["wang"]:"";?>">
                    </td>
                </tr>
                <tr>
                    <td>密&emsp;码：</td>
                    <td><input type="password" id="password" name="password"></td>
                </tr>
                <tr>
                    <td colspan="2" align="center" style="color:red;font-size:10px;">
                        <!--提示信息-->
                        <?php
                        $err=isset($_GET["err"])?$_GET["err"]:"";
                        switch($err) {
                            case 1:
                                echo "用户名或密码错误！";
                                break;
                            case 2:
                                echo "用户名或密码不能为空！";
                                break;
                        }
                        ?>
                    </td>
                </tr>
                <tr>
                    <td colspan="2" align="center">
                        <input type="submit" id="login" name="login" value="登录">
                        <input type="reset" id="reset" name="reset" value="重置">
                    </td>
                </tr>
                <tr>
                    <td colspan="2" align="center">
                        还没有账号，快去<a style="color:red" href="register.php">注册</a>吧！
                    </td>
                </tr>
            </table>
        </form>
    </div>
    </div>
    <!--脚部-->


</body>
</html>