(PECL memcache >= 2.0.0) Add a memcached server to connection pool

(PECL net_gopher >= 0.1) Translate a gopher formatted directory entry into an associative array.

(PECL event >= 1.2.6-beta) Sets number of priorities per event base

(PHP 5, PHP 7) Sends an arbitrary command to an FTP server

(PECL libevent >= 0.0.1) Re-configures event

(PECL gearman >= 0.5.0) Add a task to get status

(PHP 4 >= 4.0.5, PECL yaz >= 0.9.0) Prepares for retrieval (Z39.50 present)

(PHP 4, PHP 5, PHP 7) Logs in to an FTP connection

(PHP 5, PHP 7) Get information about the current transfers

(PECL sam >= 1.1.0) Turn on or off additional debugging output.