与PHP的Gearman – 在工作者的螺纹

我正在搜索的输出是：

$./daemon.php  
Starting daemon...
Received job: H:www-dev1:15 
Received job: H:www-dev1:16 
Finished
Finished

但是当前代码的输出是：

$./daemon.php  
Starting daemon...
Received job: H:www-dev1:15 
Finished
Received job: H:www-dev1:16 
Finished

是否可以使用pcntl_fork()来分叉GearmanWorker？

客户：
????

$client = new GearmanClient();
$client->addServer();

$args = array('test' => 'test1');
$args = serialize($args);

$client->doBackground('test',$args);
sleep(1);
$client->doBackground('test',$args);

echo "Done";

工人：

#!/usr/bin/php
<?php

echo "Starting daemon..." . PHP_EOL;

$worker = new GearmanWorker();
$worker->addServer();
$worker->addFunction('test','testFunc');

while ($worker->work()) {
}

function testFunc($job) {

    echo "Received job: " . $job->handle() . PHP_EOL;
    sleep(10);
    echo "Finished" . PHP_EOL;  
}