What is PhpDig?
PhpDig is a PHP MySQL based
Web Spider & Search Engine.



gethostbyaddr — Gets the human-readable name for an IP address.


string gethostbyaddr(IP_address);
string IP_address: IP address of the Internet host


Internet hostname; IP_address argument on error


gethostbyaddr() performs a DNS lookup of an Internet IP address and returns the corresponding domain name. If no name exists, the function returns the IP_address argument.


PHP Version: 3+, 4+


Example 834. Find the hostname for an IP address

$ip = '';
$host = gethostbyaddr ($ip);

if ($ip != $host)
    echo "The hostname for <i>$ip</i> is <i>$host</i>.";
    echo "I could not successfully look up <i>$ip</i>.";

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2005, Jelsoft Enterprises Ltd.
Copyright © 2001 - 2005, ThinkDing LLC. All Rights Reserved.