(PECL gearman >= 0.5.0)
GearmanWorker::addServers — Add job servers
Adds one or more job servers to this worker. These go into a list of servers that can be used to run jobs. No socket I/O happens here.
A comma separated list of job servers in the format host:port. If no port is specified, it defaults to 4730.
成功时返回 TRUE， 或者在失败时返回 FALSE.
Example #1 Add two job servers
<?php
$worker= new GearmanWorker();
$worker->addServers("10.0.0.1,10.0.0.2:7003");
?>