Php/docs/zookeeper.setwatcher
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Zookeeper::setWatcher
(PECL zookeeper >= 0.1.0)
Zookeeper::setWatcher — Set a watcher function
说明
public
Zookeeper::setWatcher
( callable $watcher_cb
) : bool
参数
watcher_cb- A watch will be set at the server to notify the client if the node changes.
返回值
成功时返回 true， 或者在失败时返回 false。
错误／异常
This method emits PHP error/warning when parameters count or types are wrong or fail to set watcher.
Caution Since version 0.3.0, this method emits ZookeeperException and it's derivatives.
参见
- Zookeeper::exists() - Checks the existence of a node in zookeeper synchronously
- Zookeeper::get() - Gets the data associated with a node synchronously
- ZookeeperException
