Viewing file: CheckIP.php (2.34 KB) -rw-rw-rw- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
<?php /* * Copyright (c) 2002-2006 Martin Jansen * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * $Id: CheckIP.php,v 1.8 2006/12/15 17:42:26 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; $i++) { if (!preg_match("/^[0-9]+$/", $oct[$i])) { return false; }
if ($oct[$i] < 0 || $oct[$i] > 255) { return false; } }
return true; } } ?>
|