(PECL zookeeper >= 0.1.0)
Zookeeper::setWatcher — Set a watcher function
watcher_cb
A watch will be set at the server to notify the client if the node changes.
锟缴癸拷时锟斤拷锟斤拷 TRUE
锟斤拷 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE
锟斤拷
This method emits PHP error/warning when parameters count or types are wrong or fail to set watcher.
Since version 0.3.0, this method emits ZookeeperException and it's derivatives.