Set a callback for worker warnings

public bool GearmanClient::setWarningCallback ( callback $callback )

Sets a function to be called when a worker sends a warning. The callback should accept a single argument, a GearmanTask object.

Returns TRUE on success or FALSE on failure.

GearmanClient::setDataCallback - Callback function when there is a data packet for a task
GearmanClient::setCompleteCallback - Set a function to be called on task completion
GearmanClient::setCreatedCallback - Set a callback for when a task is queued
GearmanClient::setExceptionCallback - Set a callback for worker exceptions
GearmanClient::setFailCallback - Set callback for job failure
GearmanClient::setStatusCallback - Set a callback for collecting task status
GearmanClient::setWorkloadCallback - Set a callback for accepting incremental data updates

GearmanClient::setWarningCallback