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- <?php
- //
- // +----------------------------------------------------------------------+
- // | PHP Version 4 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1997-2002 The PHP Group |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 2.0 of the PHP license, |
- // | that is bundled with this package in the file LICENSE, and is |
- // | available at through the world-wide-web at |
- // | http://www.php.net/license/2_02.txt. |
- // | If you did not receive a copy of the PHP license and are unable to |
- // | obtain it through the world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Authors: Martin Jansen <mj@php.net> |
- // | Guido Haeger <gh-lists@ecora.de> |
- // +----------------------------------------------------------------------+
- //
- // $Id: CheckIP.php,v 1.5 2002/08/17 09:41:24 mj Exp $
-
- /**
- * Class to validate the syntax of IPv4 adresses
- *
- * Usage:
- * <?php
- * require_once "Net/CheckIP.php";
- *
- * if (Net_CheckIP::check_ip("your_ip_goes_here")) {
- * // Syntax of the IP is ok
- * }
- * ?>
- *
- * @author Martin Jansen <mj@php.net>
- * @author Guido Haeger <gh-lists@ecora.de>
- * @package Net_CheckIP
- * @version 1.1
- * @access public
- */
- class Net_CheckIP
- {
-
- /**
- * Validate the syntax of the given IP adress
- *
- * This function splits the IP address in 4 pieces
- * (separated by ".") and checks for each piece
- * if it's an integer value between 0 and 255.
- * If all 4 parameters pass this test, the function
- * returns true.
- *
- * @param string $ip IP adress
- * @return bool true if syntax is valid, otherwise false
- */
- function check_ip($ip)
- {
- $oct = explode('.', $ip);
- if (count($oct) != 4) {
- return false;
- }
-
- for ($i = 0; $i < 4; $i++) {
- if (!is_numeric($oct[$i])) {
- return false;
- }
-
- if ($oct[$i] < 0 || $oct[$i] > 255) {
- return false;
- }
- }
-
- return true;
- }
- }
- ?>
-