Get Internet service which corresponds to port and protocol
Syntax
getservbyport ( int $port , string $protocol ) : string
Parameters
portThe port number.
protocolprotocol is either "tcp" or "udp" (in lowercase).
Return
Returns the Internet service name as a string.
Examples
1 · port protocol
<? $port = 80; $protocol = "tcp"; $return = getservbyport($port, $protocol); echo $return; ?>
http
2 · 1
<?
$array = array(21, 22, 23, 25, 43, 70, 79, 80, 110, 143);
$protocol = "tcp";
foreach ($array as $port)
{
$return = getservbyport($port, $protocol);
echo "$port: $return\n";
}
?>21: ftp 22: ssh 23: telnet 25: smtp 43: nicname 70: gopher 79: finger 80: http 110: pop3 143: imap
