OpCacheGUI\Network\Ip\Cidr

Complexity

Total Complexity

2

Size/Duplication

Total Lines	31
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	0

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	isValid()	0	4	1
A	convert()	0	9	1

<?php
/**
 * IP range converter for a CIDR IP address
 *
 * PHP version 5.5
 *
 * @category   OpCacheGUI
 * @package    Network
 * @subpackage Ip
 * @author     Pieter Hordijk <info@pieterhordijk.com>
 * @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;

/**
 * IP range converter for a CIDR IP address
 *
 * @category   OpCacheGUI
 * @package    Network
 * @subpackage Ip
 * @author     Pieter Hordijk <info@pieterhordijk.com>
 */
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),
        ];
    }
}