(PECL gearman >= 0.5.0)
GearmanClient::setWorkloadCallback — Set a callback for accepting incremental data updates
public GearmanClient::setWorkloadCallback ( callable $callback ) : bool
Sets a 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. The callback should accept a single argument, a GearmanTask object.
callback
A function to call
Returns true on success or false on failure.
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https://www.php.net/manual/en/gearmanclient.setworkloadcallback.php