(PECL memcached >= 2.0.0) Set Memcached options

(PECL memcache >= 0.4.0) Open memcached server persistent connection

(PECL svn >= 0.2.0) Return true if content is different, false otherwise

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

(PECL memcache >= 0.2.0) Add an item to the server

(PHP 5 <= 5.0.5) Get next pending FAM event

(PECL gearman >= 0.5.0) Create a GearmanClient instance

(PECL event >= 1.2.6-beta) Adjusts read and/or write watermarks

(No version information available, might only be in Git) Get the idle timeout

(PECL gearman >= 0.5.0) Create a GearmanTask instance