$log"; } ) ->setClientId("test") ->open() ->connect(); $value = @$_POST['value']; if ( $value ) { $client->publish( $topic, $value ); echo "Value '".htmlentities($value)."' saved. Read the value"; } else { $value = $client->subscribe( $topic ); echo "Actual Value: ".$value; } $client->disconnect(); } catch(Exception $exception) { error_log( $exception->getMessage().":".$exception->getTraceAsString()); echo "Error: ".$exception->getMessage().""; } ?>