(PECL gearman >= 0.5.0) Run a list of tasks in parallel

(PECL gearman >= 0.5.0) Set a callback for worker warnings

(PECL gearman >= 0.5.0) Add a list of job servers to the client

(PECL gearman >= 0.5.0) Set a callback for when a task is queued

(PECL gearman >= 0.5.0) Add a task to be run in parallel

(PECL gearman >= 0.5.0) Add a job server to the client

(PECL gearman >= 0.5.0) Run a task in the background

(PECL gearman >= 0.5.0) Set a callback for accepting incremental data updates

(PECL gearman >= 0.5.0) Run a low priority task in the background

(PECL gearman >= 0.5.0) Set callback for job failure