PHP密碼更改腳本

Question

我正在嘗試制作一個腳本來更改MySQL表中的加密密碼。 我認為代碼是正確的，但是腳本不會更改密碼。 它會檢測舊密碼何時錯誤以及新密碼何時與確認密碼不匹配。 當所有內容都簽出時，它不會給出錯誤，而只是重定向。

    try
{
    $db = new PDO("mysql:host={$host};dbname={$dbname};charset=utf8", $username, $password, $options);
}
catch(PDOException $ex)
{
    die("Failed to connect to the database: " . $ex->getMessage());
}

$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$db->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);

if(function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc())
{
    function undo_magic_quotes_gpc(&$array)
    {
        foreach($array as &$value)
        {
            if(is_array($value))
            {
                undo_magic_quotes_gpc($value);
            }
            else
            {
                $value = stripslashes($value);
            }
        }
    }

    undo_magic_quotes_gpc($_POST);
    undo_magic_quotes_gpc($_GET);
    undo_magic_quotes_gpc($_COOKIE);
}

header('Content-Type: text/html; charset=utf-8');

session_start();
if(!empty($_SESSION['user']))
unset ($_SESSION['user']);
if(!empty($_POST))
{
    $query = "
        SELECT
            username,
            password,
            salt
        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());
    }

    $pass = false;

    $row = $stmt->fetch();

    if($row)
    {
        $check_password = hash('sha256', $_POST['old'] . $row['salt']);
        for($round = 0; $round < 65536; $round++)
        {
            $check_password = hash('sha256', $check_password . $row['salt']);
        }

        if($check_password !== $row['password'])
        {
            die("Incorrect old password!");
        }
        if($_POST['new'] !== $_POST['confirm'])
        {
            die("Password does not match!");
        }
        $pass = true;
    }

    if($pass)
    {       
        $salt = dechex(mt_rand(0, 2147483647)) . dechex(mt_rand(0, 2147483647));
        $password = hash('sha256', $_POST['new'] . $salt);
        for($round = 0; $round < 65536; $round++)
        {
            $password = hash('sha256', $password . $salt);
        }

        $query1 = " UPDATE users SET password = ':password', salt = ':salt' WHERE username = ':username' ";

        $query_params1 = array(
            ':username' => $_POST['username'],
            ':password' => $password,
            ':salt' => $salt
        );

        try
        {
            $stmt1 = $db->prepare($query1);
            $result1 = $stmt1->execute($query_params1);
        }
        catch(PDOException $e)
        {
            die("Failed to run query: " . $e->getMessage());
        }
            header("Location: index.php");
            die;
    }
    else
    {
        print("Password change failed.");
    }   
}

Answer 1

您不引用綁定變量：

$query1 = 'UPDATE users SET password = :password, salt = :salt WHERE username = :username";