如何返回会话变量并在下次刷新渲染后立即清除它？

发布于 2024-12-03 21:36:15 字数 832 浏览 2 评论 0原文

我有一个功能，可以显示当前管理登录信息，还可以显示会话变量中包含的反馈消息。

我进行了设置，以便会话变量在显示后立即设置为空。然而，在实现中，我让显示变量的函数像这样显示它：

function loginInfo()
{
    $code .= 'You are logged in as bob.';
    $code .= 'msg:'.$_SESSION['msg'];

    $_SESSION['msg'] = null;

    return $code;
}

function breadCrumbs($section = '')
{
    $html .= $this->loginInfo();
    $html .= '<h1><a href="/admin">Dashboard</a> &gt; '.$section.'</h1>';

    return $html;
}

function dashboard()
{
    $html .= $this->breadCrumbs('');
    $html .= '<ul>';
    $html .= etc.. 
}

-----------

$_SESSION['msg'] = 'message here';
header(Redirect "/admin");
exit();

然后在新页面上调用仪表板函数。

echo $admin->dashboard();

上面总是返回 null，我假设它是因为在返回显示 $code 之前它在函数中更改为 null？

我该如何解决这个问题？

原文

I have a function which displays current admin log in information which also displays feedback messages contained in a session variable.

I had it setup so the session variable would be set to null straight after it was displayed. However in the implementation I have the function displaying the variable displays it like so:

function loginInfo()
{
    $code .= 'You are logged in as bob.';
    $code .= 'msg:'.$_SESSION['msg'];

    $_SESSION['msg'] = null;

    return $code;
}

function breadCrumbs($section = '')
{
    $html .= $this->loginInfo();
    $html .= '<h1><a href="/admin">Dashboard</a> > '.$section.'</h1>';

    return $html;
}

function dashboard()
{
    $html .= $this->breadCrumbs('');
    $html .= '<ul>';
    $html .= etc.. 
}

-----------

$_SESSION['msg'] = 'message here';
header(Redirect "/admin");
exit();

then the dashboard function is called on the new page.