getprotobyname

(PHP 4, PHP 5, PHP 7)

Get protocol number associated with protocol name

int getprotobyname ( string $name )

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

Parameters:

name

The protocol name.

Returns:

Returns the protocol number, or FALSE on failure.

Examples:

getprotobyname() example

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