getprotobyname

(PHP 4, PHP 5, PHP 7, PHP 8)

getprotobynameGet protocol number associated with protocol name

Description

getprotobyname(string $protocol): int|false

getprotobyname() returns the protocol number associated with the protocol protocol as per /etc/protocols.

Parameters

protocol

The protocol name.

Return Values

Returns the protocol number, or false on failure.

Examples

Example #1 getprotobyname() example

<?php$protocol = 'tcp';$get_prot = getprotobyname($protocol);if ($get_prot === FALSE) {    echo 'Invalid Protocol';} else {    echo 'Protocol #' . $get_prot;}?>

See Also