(PECL gearman >= 0.5.0)
Add a background task to be run in parallel
public GearmanTask GearmanClient::addTaskBackground ( string $function_name, string $workload [, mixed &$context [, string $unique ]] )
Adds a background task to be run in parallel with other tasks. Call this method for all the tasks to be run in parallel, then call GearmanClient::runTasks() to perform the work.
Parameters: