This is an extension to efficiently schedule I/O, time and signal based events using the best I/O notification mechanism available for specific platform. This is a port of libevent to the PHP infrastructure.
注意:
Note, Windows support introduced in event-1.9.0 .
Version 1.0.0 introduces new object-oriented API (breaking backwards compatibility), and support of libevent 2+ including HTTP, DNS, OpenSSL and the event listener.
注意:
Note, event-1.0.0 and greater is not compatible with previous versions.