# event_add

(PECL libevent >= 0.0.1)

event_add — Add an event to the set of monitored events

### 说明

event_add ( resource `$event` [, int `$timeout` = -1 ] ) : bool

event_add() schedules the execution of the `event` when the event specified in event_set() occurs or in at least the time specified by the `timeout` argument. If `timeout` was not specified, not timeout is set. The `event` must be already initalized by event_set() and event_base_set() functions. If the `event` already has a timeout set, it is replaced by the new one.

### 参数

`event`

  Valid event resource.

`timeout`

  Optional timeout (in microseconds).

### 返回值

event_add() returns `TRUE` on success or `FALSE` on error.