(PECL libevent >= 0.0.1) Change a buffered event file descriptor

(PECL eio >= 0.0.1dev) Commit buffer cache to disk

(PHP 4, PHP 5, PHP 7) Return the real group ID of the current process

(PECL ev >= 0.2.0) Configures the watcher

(PECL eio >= 0.0.1dev) Cancels a request group

(PECL pthreads >= 2.0.0) Manipulation public

(PECL sync >= 1.0.0) Waits for an exclusive write lock

(PECL pthreads >= 2.0.0) Identification public

(PHP 5 >= 5.1.0, PHP 7) Determine accessibility of a file

(PECL libevent >= 0.0.1) Create new buffered event