getservbyport

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

getservbyport — Get Internet service which corresponds to port and protocol

function getservbyport(int $port, string $protocol): string |false

getservbyport() returns the Internet service associated with port for the specified protocol as per /etc/services.

Returns the Internet service name as a string, 或者在失败时返回 false .

25 years ago

Example:
<?php $value = getservbyport(137, "udp"); ?>

The same goes for getservbyname()