Ev::stop (PECL ev >= 0.2.0)Ev::stop — Stops the default event loop 说明 final public static Ev::stop( int $how = ?): void Stops the default event loop 参数 how One of Ev::BREAK_* constants. 返回值 没有返回值。 参见 Ev::run() - Begin checking for events and calling callbacks for the default loop