这是我的代码,适用于本地主机并将我重定向到登录页面:
require("common.php");
unset($_SESSION['user']);
session_destroy();
header("Location: login.php");
但是当我将它上传到我的网络服务器时,不会发送标头。用户登录时未重定向到我的登录页面。但会话已经开始。
这是代码:
require("common.php");
$submitted_username = '';
if(!empty($_POST))
{
$query = "
SELECT
id,
username,
password,
salt,
email
FROM users
WHERE
username = :username
";
$query_params = array(
':username' => $_POST['username']
);
try
{
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
}
catch(PDOException $ex)
{
die("Failed to run query: " . $ex->getMessage());
}
$login_ok = false;
$row = $stmt->fetch();
if($row)
{
$check_password = hash('sha256', $_POST['password'] . $row['salt']);
for($round = 0; $round < 65536; $round++)
{
$check_password = hash('sha256', $check_password . $row['salt']);
}
if($check_password === $row['password'])
{
$login_ok = true;
}
if($login_ok)
{
unset($row['salt']);
unset($row['password']);
$_SESSION['user'] = $row;
header("Location:form_menu.php");
}
else
{
echo("<font color=red>Login Failed. Icorrect Password </font>");
$submitted_username = htmlentities($_POST['username'], ENT_QUOTES, 'UTF-8');
}
}
}
如何解决这个问题?我的网络服务器有问题吗?