src/Drivers/Beanstalkd.php
public function later($delay, $queue, $payload, $ttr = PheanstalkInterface::DEFAULT_TTR)
    {
        return $this->pushRaw($queue, $payload, $ttr, $delay);
    }
public function later($delay, $queue, $payload, $ttr = PheanstalkInterface::DEFAULT_TTR)
    {
        return $this->pushRaw($queue, $payload, $ttr, $delay);
    }
延时分发到队列

@param $delay
@param $queue
@param $payload
@param int $ttr

@return int