Network Address Types for PHP

This library provides types to handle the most common network addresses. The following address types are supported:

• MAC addresses in the following forms:
  • Colon separated (00:00:00:00:00:00)
  • Dash separated (00-00-00-00-00-00)
  • Without separator (000000000000)
• IPv4 (ex: 127.0.0.1)
• IPv6 (ex: ::1)
• CIDR addresses for IPv4 and IPv6 (ex: 129.0.0.1/12, ff80:e::/64)

Installation

Installation can be performed with composer:

composer require luka/network-address-types

Requirements

• PHP
  • 7.4 (until version 1.1.0)
  • 8.0
  • 8.1
  • 8.2
• ext-gmp for handling IPv6 calculations
• ext-json as it supports json_encode by implementing JSONSerializable

Getting started

use LUKA\Network\NetworkAddress;

$address = NetworkAddress::fromString('127.0.0.1');
assert($address instanceof \LUKA\Network\IPv4\IPv4Address);
$address = NetworkAddress::fromString('127.0.0.1/8');
assert($address instanceof \LUKA\Network\IPv4\CIDRv4Address);
$address = NetworkAddress::fromString('::1');
assert($address instanceof \LUKA\Network\IPv6\IPv6Address);
$address = NetworkAddress::fromString('ff80::1/64');
assert($address instanceof \LUKA\Network\IPv6\CIDRv6Address);
$address = NetworkAddress::fromString('84:34:ff:ff:ff:ff');
assert($address instanceof \LUKA\Network\MACAddress);

Serialization

All types can be constructed from strings and can therefore be converted to strings as well with the toString() method.

use LUKA\Network\NetworkAddress;

assert('::1' === NetworkAddress::fromString('::1')->toString());

When converting addresses to strings, they will be normalized for the corresponding type:

use LUKA\Network\NetworkAddress;

assert('::1' === NetworkAddress::fromString('0:0:0:0::1')->toString());
assert('00:00:00:00:00:00' === NetworkAddress::fromString('00-00-00-00-00-00')->toString());

JSON

All address types implement the JSONSerializable interface, and can therefore be used with json_encode() directly.

Binary

IP and MAC addresses can also be converted to the corresponding byte sequence. (for example to storing them in a BINARY database field).

They can also be constructed from this byte sequence with the static fromByteString() method of the corresponding class.

Address Comparison

Compare equality

Each address implements an equals() method to compare it to other network addresses.

Addresses are considered equal when they are from the same type and contain the same value:

use LUKA\Network\NetworkAddress;

assert(
    true === NetworkAddress::fromString('::1')
        ->equals(NetworkAddress::fromString('::1'))
);

// Value mismatch:
assert(
    false === NetworkAddress::fromString('::1')
        ->equals(NetworkAddress::fromString('::2'))
);

// Type mismatch (different IP version):
assert(
    false === NetworkAddress::fromString('::1')
        ->equals(NetworkAddress::fromString('127.0.0.1'))
);

// Type mismatch (cidr vs non-cidr)
assert(
    false === NetworkAddress::fromString('192.168.0.5')
        ->equals(NetworkAddress::fromString('192.168.0.5/24'))
);

Comparing addresses to networks

CIDR addresses allow to obtain the corresponding network to the denoted address. With this network you can check if an IP address is within this network.

use LUKA\Network\NetworkAddress;

$cidr = NetworkAddress::fromString('192.168.0.7/8');
$network = $cidr->toNetwork();

assert(true === $network->containsAddress(NetworkAddress::fromString('192.168.0.1')));
assert(true === $network->containsAddress(NetworkAddress::fromString('192.45.0.2')));
assert(false === $network->containsAddress(NetworkAddress::fromString('127.10.0.1')));
assert(false === $network->containsAddress(NetworkAddress::fromString('ff80::5')));

This will work for IPv6 as well:

use LUKA\Network\NetworkAddress;

$cidr = NetworkAddress::fromString('ff80::/64');
$network = $cidr->toNetwork();

assert(true === $network->containsAddress(NetworkAddress::fromString('ff80::1')));
assert(true === $network->containsAddress(NetworkAddress::fromString('ff80::10:e5:7')));
assert(false === $network->containsAddress(NetworkAddress::fromString('ff80:e::1')));
assert(false === $network->containsAddress(NetworkAddress::fromString('127.0.0.1')));