PhutilIPAddress.php
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	<?php

	/**
	* Represent and manipulate IPv4 and IPv6 addresses.
	*/
	abstract class PhutilIPAddress
	extends Phobject {

	private function __construct() {
	// <private>
	}

	abstract public function toBits();
	abstract public function getBitCount();
	abstract public function getAddress();

	public static function newAddress($in) {
	if ($in instanceof PhutilIPAddress) {
	return clone $in;
	}

	try {
	return PhutilIPv4Address::newFromString($in);
	} catch (Exception $ex) {
	// Continue, trying the address as IPv6 instead.
	}

	try {
	return PhutilIPv6Address::newFromString($in);
	} catch (Exception $ex) {
	// Continue, throwing a more tailored exception below.
	}

	throw new Exception(
	pht(
	'IP address "%s" is not properly formatted. Expected an IPv4 address '.
	'like "%s", or an IPv6 address like "%s".',
	$in,
	'23.45.67.89',
	'2345:6789:0123:abcd::'));
	}

	}