connect_error) { die(json_encode([ 'success' => false, 'message' => 'Koneksi database gagal: ' . $conn->connect_error ])); } $conn->set_charset("utf8"); function sendResponse($success, $message, $data = null) { $response = [ 'success' => $success, 'message' => $message ]; if ($data !== null) { $response['data'] = $data; } echo json_encode($response); exit; } ?>