(PECL event >= 1.6.0)
EventUtil::setSocketOption — Sets socket options
$socket
,
int
$level
,
int
$optname
,
mixed
$optval
) : boolSets socket options.
socket
Socket resource, stream, or numeric file descriptor associated with the socket.
level
One of
EventUtil::SOL_*
constants. Specifies the protocol level at which the option resides. For
example, to retrieve options at the socket level, a
level
parameter of
EventUtil::SOL_SOCKET
would be used. Other levels, such as TCP, can be used by specifying the
protocol number of that level. Protocol numbers can be found by using
the
getprotobyname()
function. See
EventUtil constants
.
optname
Option name(type). Has the same meaning as corresponding parameter of socket_get_option() function. See EventUtil constants .
optval
Accepts the same values as
optval
parameter of the
socket_get_option()
function.
成功时返回 true， 或者在失败时返回 false。