gwk/ip_address

IP address handling library

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Language: PHP

0.1 2013-04-17 21:45 UTC

README

This library allows you to handle IP addresses in various forms (currently IPv4 only) and test whether an IP matches certain constraints (equality, in a subnet or in a range).

Example

<?php

use IPAddress\IPv4\Address;
use IPAddress\IPv4\Subnet;

$address = new Address("1.2.8.200"); // These statements yield the same address
$address = new Address(0x010208c8);
$address = new Address(array(1, 2, 8, 200));
$address = new Address(array("1", "2", "010", "0xc8"));

$subnet = new Subnet("1.2.3.4", "255.255.0.0"); // These statements yield the same subnet
$subnet = Subnet::fromCidr("1.2.3.4", 16);
$subnet = Subnet::fromString("1.2.3.4 255.255.0.0");
$subnet = Subnet::fromString("1.2.3.4/16");

if($address->isPrivate()) {
    echo "Your address is in one of the RFC1918 Private networks.\n";
}

if($subnet->match($address)) {
    echo "I know your address is in the \"$subnet\" subnet.\n";
    // OUTPUT: I know your address is in the "1.2.3.4 netmask 255.255.0.0" subnet.
}

The library's test have been run on both 32-bit and 64-bit php and should work on both. Please note that the Address class' int() method (which returns the integer representation of an IP address) will return a negative number for ip addresses larger than 127.255.255.255 on 32-bit php due to the fact that php doesn't support unsigned integers.

TODO

  • More utility methods
  • IPv6 support

Disclaimer

I have limited knowledge of IP addresses so I could have made some mistakes regarding terminology or even behavior of the library in certain cases.

License

MIT, see LICENSE