Question

我的网站上有会员服务。目前，当有人注销时，会将其重定向到logout.php，其中包含此代码：

<?php

        //check if the login session does no exist
        if(strcmp($_SESSION['uid'],”) == 0){
            //if it doesn't display an error message
            echo "<center>You need to be logged in to log out!</center>";
        }else{
            //if it does continue checking

            //update to set this users online field to the current time
            mysql_query("UPDATE `users` SET `online` = '".date('U')."' WHERE `id` = '".$_SESSION['uid']."'");

            //destroy all sessions canceling the login session
            session_destroy();

            //display success message
            echo "<center>You have successfully logged out!<br><a href = '/review-pratt/index.php' class='icon-button star'>Return Home</button></center>";
        }

        ?>

而不是让用户被带到“logout.php”并查看一个说他们退出的无聊页面。我希望将它们重定向到index.php。我知道，那部分很容易。

我希望顶部的通知栏显示通知他们已成功退出。我曾尝试过这样做，从来没有任何工作。任何帮助或建议将不胜感激！

更新

我已将logout.php代码更改为：

<?php

        //check if the login session does no exist
        if(strcmp($_SESSION['uid'],”) == 0){
            //if it doesn't display an error message
            echo "<center>You need to be logged in to log out!</center>";
        }else{
            //if it does continue checking

            //update to set this users online field to the current time
            mysql_query("UPDATE `users` SET `online` = '".date('U')."' WHERE `id` = '".$_SESSION['uid']."'");

            //destroy all sessions canceling the login session
            session_destroy();

            //Redirect with success message
            header('Location: /index.php?msg=' . urlencode("You have been successfully logged out!"));
        }

        ?>

并将以下代码添加到我的index.php：

    <?php

    if ($_GET['msg'])
{
       echo '<div class="success_message">' . base64_decode(urldecode($_GET['msg'])) . '</div>';
}

?>

当我退出时，我收到此错误：

Warning: Cannot modify header information - headers already sent by (output started at /home/content/38/10473938/html/review-pratt/business_profiles/logout.php:19) in /home/content/38/10473938/html/review-pratt/business_profiles/logout.php on line 35

Answer 1

你可以这样做：

header('location: index.php?status=loggedout');

并在index.php文件中查看状态是否为空，并显示一个状态为div的div：

<?php 
   if(!empty($_GET['status'])){
          echo '<div>You have been logged out!</div>';
   }
?>

也在if语句中你可以清除用户会话..

Answer 2

有很多解决方案，但几乎所有解决方案都需要logout.php来传递消息，而index.php则需要代码来显示消息。

我首选的方法是将邮件作为URL参数传递。使用header重定向，使用base64_encode缩短网址中的文字，使用url_encode确保网址不会被废弃。

//Redirect with success message
header('Location: /index.php?msg=' . urlencode(base64_encode("You have been successfully logged out!")));

然后，在index.php页面上

if ($_GET['msg'])
{
       echo '<div class="success_message">' . base64_decode(urldecode($_GET['msg'])) . '</div>';
}

修改：如果您的标头已经发出（您是否echo在这些上方的一行上输出了一些文字？），您可以使用Javascript进行重定向。< / p>

将header('Location: ')替换为：echo '<meta http-equiv="Refresh" content="0;url=http://example.com/index.php?msg=' . urlencode(base64_encode('You have been successfully logged out!')) . '">';

Answer 3

您可以使用“Noty”插件在您的网络应用上启用通知。见这里：http://needim.github.com/noty/

实现应该是这样的：

将用户重定向到index.php？logout = 1
使用“查询字符串”参数填充隐藏字段。
使用noty在页面加载时显示隐藏的字段值。

这是一个代码示例：

<?php 
   if(!empty($_GET['logout'])){
          echo '<input id="logoutMsg" value="You have been logged out!"  />';
   }
?>

<script>
   var logoutMsg = $('#logoutMsg').val();
   var noty = noty({text: logoutMsg });
</script>

Answer 4

如果要在成功消息后立即重定向，请使用以下代码： -

    <?php

        //check if the login session does no exist
        if(strcmp($_SESSION['uid'],”) == 0){
            //if it doesn't display an error message
            echo "<center>You need to be logged in to log out!</center>";
        }else{
            //if it does continue checking

            //update to set this users online field to the current time
            mysql_query("UPDATE `users` SET `online` = '".date('U')."' WHERE `id` = '".$_SESSION['uid']."'");

            //destroy all sessions canceling the login session
            session_destroy();

            //display success message
            echo "<center>You have successfully logged out!
            echo '<meta http-equiv="Refresh" content="0;url=http://url.which.you.want.to.be.redirected.to">';
}
         }
?>

注销时重定向并显示“您已成功注销！”

4 个答案: