usleep

<?php                 }

            }



            usleep(self::CYCLE_SLEEP);

        }

    }

<?php                 unset($this->workers[$index]);

            }



            usleep(self::CYCLE_SLEEP);

        }

    }

<?php         $this->workers[$token]->stop();


        while ($this->workers[$token]->isRunning()) {

            usleep(self::CYCLE_SLEEP);

        }



        unset($this->workers[$token]);