prepare('SELECT id FROM users WHERE email = ?'); $stmt->execute([$email]); if ($stmt->fetch()) { $error = t('email_already_registered'); } else { $hashed_password = password_hash($password, PASSWORD_DEFAULT); $stmt = $pdo->prepare('INSERT INTO users (email, password) VALUES (?, ?)'); $stmt->execute([$email, $hashed_password]); $success = t('registration_successful'); } } catch (PDOException $e) { $error = "Database error: " . $e->getMessage(); } } } ?>