PDO::ERRMODE_EXCEPTION, PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC, PDO::ATTR_EMULATE_PREPARES => false, ]); } catch (PDOException $e) { http_response_code(503); die(json_encode(['success' => false, 'message' => 'Database connection error.'])); } return $pdo;