(PECL gearman >= 0.5.0)
GearmanClient::setWorkloadCallback — Set a callback for accepting incremental data updates
public GearmanClient::setWorkloadCallback(callable $callback): bool
Sets a callback function to be called when a worker needs to send back data prior to job completion. A worker can do this when it needs to send updates, send partial results, or flush data during long running jobs.
Note:
The callback will only be triggered for tasks that are added (e.g. by calling GearmanClient::addTask()) after calling this method.
callbackA function or method to call. It should return a valid Gearman return value.
If no return statement is present, it defaults to GEARMAN_SUCCESS.
callback(GearmanTask $task, mixed $context): int
taskThe task this callback is called for.
context Whatever has been passed to GearmanClient::addTask() (or equivalent method) as context.
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https://www.php.net/manual/en/gearmanclient.setworkloadcallback.php