(PECL pthreads >= 2.0.0) State Detection public

(PECL eio >= 0.0.1dev) Adds a request to the request group.

(PECL sync >= 1.0.0) Constructs a new SyncReaderWriter object

(PHP 5 >= 5.3.0, PHP 7) Sets and retrieves blocked signals

(PHP 5 >= 5.3.4, PHP 7) Retrieve the error number set by the last pcntl function which failed

(PECL ev >= 0.2.0) Must be called after a fork

(PECL ev >= 0.2.0) Constructs the event loop object

(PECL eio >= 0.0.1dev) Createsa request group.

(PECL eio >= 0.0.1dev) Set maximum poll time

(PHP 5 >= 5.3.4, PHP 7) Alias of