(PECL gearman <= 0.5.0)
GearmanClient::setData — Set application data (deprecated)
$data): boolSets some arbitrary application data that can later be retrieved by GearmanClient::data().
注意:
This method has been replaced by GearmanCient::setContext() in the 0.6.0 release of the Gearman extension.
data
Always returns true.