-var_dump(stream_select($r, $w, $e, NULL));
+var_dump(stream_select($r, $w, $e, 0));
+$consumer->poll();
+
+$producer->notify("other", "this should not show up");
+
+var_dump(stream_select($r, $w, $e, 0));
+$consumer->poll();
+
+$producer->notify("test", "just to be sure");
+
+$r = array($consumer->socket);
+$w = null; $e = null;
+var_dump(stream_select($r, $w, $e, 0));