```php
$http_worker = new Worker("http://x.x.x.x:2345");
$tcp_worker = new Worker("tcp://x.x.x.x:2346");
$http_worker->onMessage = function($connection,$data)
{
$connection->send($data);
foreach($tcp_worker->connections as $con){
$con->send("hello");
}
};
Worker::runAll();
```
命令行提示tcp_worker未定义。这样的交互方式不行吗?
是要加global ?