Event::set

(PECL event >= 1.2.6-beta)

Event::set — Re-configures event

public Event::set(
  EventBase $base ,
  mixed $fd ,
  int $what  = ?,
  callable $cb  = ?,
  mixed $arg  = ?
): bool

Re-configures event. Note, this function doesn't invoke obsolete libevent's event_set. It calls event_assign instead.

base: The event base to associate the event with.
fd: Stream resource, socket resource, or numeric file descriptor. For timer events pass -1 . For signal events pass the signal number, e.g. SIGHUP .
what: See Event flags .
cb: The event callback. See Event callbacks .
arg: Custom data associated with the event. It will be passed to the callback when the event becomes active.

Returns true on success or false on failure.

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https://www.php.net/manual/en/event.set.php