gethostbyaddr

PHP function Edit on GitHub ✎

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

Get the Internet host name corresponding to a given IP address

Description

gethostbyaddr(string $ip): string|false

Returns the host name of the Internet host specified by ip.

Returns the host name on success, the unmodified ip on failure, or false on malformed input.

A simple gethostbyaddr() example

php

<?php
$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);

echo $hostname;
?>