event_buffer_set_callback
(PECL libevent >= 0.0.4)
event_buffer_set_callback — Set or reset callbacks for a buffered event
说明
event_buffer_set_callback
( resource
$event
, mixed $readcb
, mixed $writecb
, mixed $errorcb
[, mixed $arg
] ) : bool
Sets or changes existing callbacks for the buffered event.
参数
-
event -
Valid buffered event resource.
-
readcb -
Callback to invoke where there is data to read, or NULL if no callback is desired.
-
writecb -
Callback to invoke where the descriptor is ready for writing, or NULL if no callback is desired.
-
errorcb -
Callback to invoke where there is an error on the descriptor, cannot be NULL.
-
arg -
An argument that will be passed to each of the callbacks (optional).
返回值
成功时返回 TRUE， 或者在失败时返回 FALSE。