Zookeeper::setWatcher

(PECL zookeeper >= 0.1.0)

Zookeeper::setWatcher — Set a watcher function

public Zookeeper::setWatcher(callable $watcher_cb): bool

watcher_cb: A watch will be set at the server to notify the client if the node changes.

成功时返回 true，或者在失败时返回 false。

This method emits PHP error/warning when parameters count or types are wrong or fail to set watcher.

警告

Since version 0.3.0, this method emits ZookeeperException and it's derivatives.