unset vs. session_unset不能正常工作

Question

当我想回显存储在会话中的数据，然后取消特定的会话.什么都没发生。当我使用session_unset(特定会话)时，它会破坏所有会话。有什么想法吗？

function danger($text)
{
    echo "<div class='alert alert-danger alert-dismissable'>
    <a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a>" . $text . "</div>";
}

public function success($text)
{
    echo "<div class='alert alert-success alert-dismissable'>
    <a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a>" . $text . "</div>";
}

function flash($session)
{
    return $session;
    unset($session);
}

用法：

function checkErrors()
{
    if (isset($_SESSION['login_error']))
    {
        return danger(flash($_SESSION['login_error']));
    } elseif (isset($_SESSION['login_true']))
    {
        return success(flash($_SESSION['login_true']));
    }
}

Answer 1

尝试添加临时变量，然后取消设置变量，如下所示：

function flash($session)
{
    $temp = $session;
    unset($session);
    return $temp;
}

你的职责应该是：

function danger($text)
{   $display = "<div class='alert alert-danger alert-dismissable'>
    <a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a>" . $text . "</div>";
    return $display;
}

public function success($text)
{
    $display = "<div class='alert alert-success alert-dismissable'>
    <a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a>" . $text . "</div>";
    return $display;
}