PHP Manual
Prev |  | Next

# gethostbyaddr

(PHP 3, PHP 4, PHP 5)

gethostbyaddr -- Get the Internet host name corresponding to a given IP address

## Description

string gethostbyaddr ( string ip_address )

Returns the host name of the Internet host specified by `ip_address` or a string containing the unmodified `ip_address` on failure.

Example 1. A simple gethostbyaddr() example

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

## See Also

gethostbyname()
gethostbynamel()

Prev | Home | Next
fsockopen | Up | gethostbyname