Zookeeper::setWatcher
(PECL zookeeper >= 0.1.0)
Zookeeper::setWatcher — Set a watcher function
Description
public Zookeeper::setWatcher ( callable $watcher_cb ) : bool
Parameters
-
watcher_cb -
A watch will be set at the server to notify the client if the node changes.
Return Values
Returns true on success or false on failure.
Errors/Exceptions
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.
See Also
- Zookeeper::exists() - Checks the existence of a node in zookeeper synchronously
- Zookeeper::get() - Gets the data associated with a node synchronously
- ZookeeperException
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https://www.php.net/manual/en/zookeeper.setwatcher.php