W3cubDocs

/PHP

getprotobyname

(PHP 4, PHP 5, PHP 7)

getprotobyname — Get protocol number associated with protocol name

Description

getprotobyname ( string $name ) : int|false

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

Parameters

name: 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

getprotobynumber() - Get protocol name associated with protocol number

© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.getprotobyname.php