首页 > 代码库 > php用户登入与注销(session)

php用户登入与注销(session)

登入界面

<?php
    session_start();
    header(‘Content-type:text/html;charset=utf-8‘);   
    if(isset($_SESSION[‘username‘]) && $_SESSION[‘username‘]===‘zeng‘){
        exit(‘您已经登入了,请不要重新登入‘);
    }

    if(isset($_POST[‘submit‘])){
        if(isset($_POST[‘username‘]) && isset($_POST[‘password‘]) && $_POST[‘username‘]==‘zeng‘ && $_POST[‘password‘]==‘123456‘ ){
                $_SESSION[‘username‘]=$_POST[‘username‘];
                header(‘location:skip.php?url=index.php&info=登入成功!3秒后跳转到首面‘);
            
        }  else {
            header(‘location:skip.php?url=login.php&info=对不起,用户名活密码填写错误!3秒后跳转到登入页面‘);
        }
    }
?>
<!DOCTYPE html>
<html lang="zh-CN">
    <head>
        <meta charset="utf-8">
        <title>请登入</title>
    </head>
    <body>
        <form method="post" action="">
            姓名:<input type="text" name="username" />
            密码:<input type="password" name="password"/>
            <input type="submit" name="submit" value="http://www.mamicode.com/登入"/>
        </form>
    </body>
</html>

跳转处理页面skip.php

<?php    if(!isset($_GET[‘url‘]) || !isset($_GET[‘info‘])){        exit();    }?><!DOCTYPE html><html>    <head>        <meta charset="utf-8">        <meta http-equiv="refresh" content="3,URL=<?php echo $_GET[‘url‘] ?>"/>        <title>正在跳转中...</title>    </head>    <body>        <div><?php echo $_GET[‘info‘] ?></div>    </body></html>

登入首页index.php

<?php
    session_start();
    header(‘Content-type:text/html;charset=utf-8‘);    
    if(isset($_SESSION[‘username‘]) && $_SESSION[‘username‘]===‘zeng‘){
        echo "您好!{$_SESSION[‘username‘]},欢迎回来!";
        echo "<a href=http://www.mamicode.com/‘logout.php‘>注销";
    }  else {
        echo "<a href=http://www.mamicode.com/‘login.php‘>请登入";
    }
?>



注销处理界面logout.php

<?php
    session_start();
    header(‘Content-type:text/html;charset=utf-8‘);
    if(isset($_SESSION[‘username‘]) && $_SESSION[‘username‘]===‘zeng‘){
            session_unset();//free all session variable
            session_destroy();//销毁一个会话中的全部数据
            setcookie(session_name(),‘‘,time()-3600);//销毁与客户端的卡号
            header(‘location:skip.php?url=index.php&info=注销成功,正在跳转!‘);
        }else{
            header(‘location:skip.php?url=index.php&info=注销失败,请稍后重试!‘);
        }
?>

 

php用户登入与注销(session)