query($sql); echo json_encode([ 'success' => true, 'users' => $stmt->fetchAll(PDO::FETCH_ASSOC) ], JSON_UNESCAPED_UNICODE); } catch (PDOException $e) { http_response_code(500); echo json_encode([ 'success' => false, 'message' => 'Erreur base de données.' ], JSON_UNESCAPED_UNICODE); }