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<?php
/**
* IP range converter for a CIDR IP address
*
* PHP version 5.5
* @category OpCacheGUI
* @package Network
* @subpackage Ip
* @author Pieter Hordijk <[email protected]>
* @copyright Copyright (c) 2014 Pieter Hordijk <https://github.com/PeeHaa>
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @version 1.0.0
*/
namespace OpCacheGUI\Network\Ip;
class Cidr implements Converter
{
* Checks whether is certain address is valid for the converter implementation
* @param string $address The address to check
* @return boolean True when the address is valid
public function isValid($address)
return !!preg_match('/^\d+\.\d+\.\d+\.\d+\/\d+$/', $address);
}
* Converts an IP address or range into a range to easily check for access
* @param string $address The IP address / range
* @return double[] Array containing the first and last ip in the range
public function convert($address)
$cidr = explode('/', $address);
return [
(float) sprintf('%u', (ip2long($cidr[0])) & ((-1 << (32 - (int) $cidr[1])))),
(float) sprintf('%u', (ip2long($cidr[0])) + pow(2, (32 - (int) $cidr[1])) - 1),
];
PeeHaa /
OpCacheGUI
