(PECL gearman >= 0.5.0)
GearmanClient::setWorkloadCallback — Set a callback for accepting incremental data updates
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.
taskThe task this callback is called for.
context
Whatever has been passed to GearmanClient::addTask() (or equivalent method) as context.