(PECL gearman >= 0.5.0)
GearmanClient::addServers — Add a list of job servers to the client
Adds a list of job servers that can be used to run a task. No socket I/O happens here; the servers are simply added to the full list of servers.
A comma-separated list of servers, each server specified in the format 'host:port'.
成功时返回 TRUE， 或者在失败时返回 FALSE.
Example #1 Add two job servers
<?php
# Create our client object.
$gmclient= new GearmanClient();
# Add multiple job servers, the first on the default 4730 port
$gmclient->addServers("10.0.0.1,10.0.0.2:7003");
?>