正如標(biāo)題所示，我正在嘗試使用相同的 .php 頁面，并讓它在從特定位置重定向時(shí)顯示新的內(nèi)容。在上下文中...我有一個(gè)登錄，成功登錄后重定向到主頁，但如果不成功，則重定向到索引。有沒有辦法讓我的索引頁面在從登錄頁面重定向時(shí)顯示“登錄錯(cuò)誤”消息？這是我的登錄代碼...<?phpsession_start();include('conn.php');$query = "SELECT * FROM User";$result = mysqli_query($conn, $query) or die(mysqli_error($conn));if (isset($_POST["submit"])) {    $logEmail = $conn->real_escape_string($_POST['logEmail']);    $logPass = $conn->real_escape_string($_POST['logPass']);    $checkuser = "SELECT * FROM User WHERE Email='$logEmail' AND UserPassword=AES_ENCRYPT('$logPass', 'MyKey')";    $userresult = mysqli_query($conn, $checkuser) or die(mysqli_error($conn));    $loginsucc = (mysqli_num_rows($userresult) > 0);    if (mysqli_num_rows($userresult) > 0) {        while ($row = mysqli_fetch_assoc($userresult)) {            $userPriKey = $row['UserID'];            $userid = $row['Email'];            $accounttype = $row['IsAdmin'];            $firstname = $row['FirstName'];            $surname = $row['LastName'];            $_SESSION['userPriKey'] = $userPriKey;            $_SESSION['name'] = $firstname;            $_SESSION['surname'] = $surname;            $_SESSION['Email'] = $userid;            $_SESSION['IsAdmin'] = $accounttype;            if($accounttype == '1'){                header("Location: home.php");            }else if ($accounttype == '0'||$accounttype == NULL ) {                header("Location: userhome.php");            }        }    } else {        header("Location: index.php");    }}?>