復制代碼 代碼如下:

session_start();

if (!isset ($_SESSION['login_ok']))
{
echo "<script language=javascript>alert ('要訪問的頁面需要先登錄。');</script>";
$_SESSION['userurl'] = $_SERVER['REQUEST_URI'];
echo '<script language=javascript>window.location.href="login.php"</script>';
}

復制代碼 代碼如下:

session_start();

//此處省略了賬號密碼驗證代碼，驗證OK再執行下面代碼

if (isset ($_SESSION['userurl']))
{
//會話中有要跳轉的頁面
$url = $_SESSION['userurl'];
}
else
{
//沒有要跳轉的頁面，則轉到首頁
$url = "home.php";
}

//0.5s后跳轉
echo "<meta http-equiv=/"refresh/" content=/"0.5;url=$url/">";