(PECL ev >= 0.2.0) Constructs the EvFork watcher object

(PECL ev >= 0.2.0) Returns the values most recently detected by Ev

(PECL ev >= 0.2.0) Constructs EvPeriodic watcher object

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

(PECL ev >= 0.2.0) Create instance of a stopped EvCheck watcher