release(trim((string)($data['operation_type'] ?? ''))); $answer['success'] = 1; $answer['message'] = 'Lock released.'; } catch (PDOException $e) { error_log('[release_op_lock] ' . $e->getMessage()); http_response_code(500); $answer['message'] = 'Database error, please try again.'; } catch (Exception $e) { http_response_code(400); $answer['message'] = $e->getMessage(); } exit(json_encode($answer));