Event
PHP 手册

Event flags

Event::READ This flag indicates an event that becomes active when the provided file descriptor(usually a stream resource, or socket) is ready for reading.

Event::WRITE flag indicates an event that becomes active when the provided file descriptor(usually a stream resource, or socket) is ready for reading.

Event::SIGNAL used to implement signal detection. See "Constructing signal events" below.

Event::TIMEOUT indicates an event that becomes active after a timeout elapses. The Event::TIMEOUT flag is ignored when constructing an event: one can either set a timeout when event is added , or not. It is set in the $what argument to the callback function when a timeout has occurred.

See also » Fast portable non-blocking network programming with Libevent, Working with events, Event flags


Event
PHP 手册