rhost.inc.t

来自「eGroupWare is a multi-user, web-based gr」· T 代码 · 共 29 行

<?php
/***************************************************************************
* copyright            : (C) 2001-2003 Advanced Internet Designs Inc.
* email                : [e-mail]
* $Id: rhost.inc.t,v 1.2 2003/10/29 05:34:54 iliaa Exp $
*
* This program is free software; you can redistribute it and/or modify it 
* under the terms of the GNU General Public License as published by the 
* Free Software Foundation; either version 2 of the License, or 
* (at your option) any later version.
***************************************************************************/

function get_host($ip)
{
	if (!$ip || $ip == '0.0.0.0') {
		return;
	}

	$name = gethostbyaddr($ip);

	if ($name == $ip) {
		$name = substr($name, 0, strrpos($name, '.')) . '*';
	} else if (substr_count($name, '.') > 2) {
		$name = '*' . substr($name, strpos($name, '.')+1);
	}

	return $name;
}
?>