(PHP 4 >= 4.1.0, PHP 5, PHP 7) Returns the signal which caused the child to terminate

(PHP 5, PHP 7) Kills a process opened by proc_open

(PECL ev >= 0.2.0) Creates EvFork watcher object associated with the current event loop instance

(PECL libevent >= 0.0.1) Exit loop after a time

(PECL pthreads >= 2.0.0) Identification public

(PHP 4, PHP 5, PHP 7) Acquire a semaphore bool

(PECL eio >= 0.0.1dev) Close file resource

(PECL eio >= 0.0.1dev) Returns number of not-yet handled requests

(PECL ev >= 0.2.0) Create stopped EvEmbed watcher object

(PECL pthreads >= 2.0.0) Creates a new Pool of Workers