--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+pcntl_signal(SIGUSR1, function () { echo 'SIGUSR1'; exit; });
+
+echo 'Caught ';
+
+$n = 0;
+
+while ($n++ < 400) {
+ usleep(10000);
+ pcntl_signal_dispatch();
+}