/**
* Try get the range instance starting from its string representation.
*
* @param string|mixed $range
*
* @return static|null
*/
public static function fromString($range)
{
$result = null;
if (is_string($range) && strpos($range, '*') !== false) {
if ($range === '*.*.*.*') {
$result = new static(IPv4::fromString('0.0.0.0'), IPv4::fromString('255.255.255.255'), 4);
} elseif (strpos($range, '.') !== false && preg_match('/^[^*]+((?:\\.\\*)+)$/', $range, $matches)) {
$asterisksCount = strlen($matches[1]) >> 1;
$fromAddress = IPv4::fromString(str_replace('*', '0', $range));
if ($fromAddress !== null) {
$fixedBytes = array_slice($fromAddress->getBytes(), 0, -$asterisksCount);
$otherBytes = array_fill(0, $asterisksCount, 255);
$toAddress = IPv4::fromBytes(array_merge($fixedBytes, $otherBytes));
$result = new static($fromAddress, $toAddress, $asterisksCount);
}
} elseif ($range === '*:*:*:*:*:*:*:*') {
$result = new static(IPv6::fromString('::'), IPv6::fromString('ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff'), 8);
} elseif (strpos($range, ':') !== false && preg_match('/^[^*]+((?::\\*)+)$/', $range, $matches)) {
$asterisksCount = strlen($matches[1]) >> 1;
$fromAddress = IPv6::fromString(str_replace('*', '0', $range));
if ($fromAddress !== null) {
$fixedWords = array_slice($fromAddress->getWords(), 0, -$asterisksCount);
$otherWords = array_fill(0, $asterisksCount, 0xffff);
$toAddress = IPv6::fromWords(array_merge($fixedWords, $otherWords));
$result = new static($fromAddress, $toAddress, $asterisksCount);
}
}
}
return $result;
}
/**
* Create an IPv6 representation of this address.
*
* @return IPv6
*/
public function toIPv6()
{
$myBytes = $this->getBytes();
return IPv6::fromString('2002:' . sprintf('%02x', $myBytes[0]) . sprintf('%02x', $myBytes[1]) . ':' . sprintf('%02x', $myBytes[2]) . sprintf('%02x', $myBytes[3]) . '::');
}