getservbyport
(PHP 4, PHP 5, PHP 7, PHP 8)
getservbyport — Get Internet service which corresponds to port and protocol
说明
getservbyport
( int
$port
, string $protocol
) : string|false
getservbyport() returns the Internet service
associated with port
for the specified
protocol
as per /etc/services.
参数
-
port
-
The port number.
-
protocol
-
protocol
is either"tcp"
or"udp"
(in lowercase).
返回值
Returns the Internet service name as a string, 或者在失败时返回 false
.