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<?php declare(strict_types=1); namespace SpomkyLabs\Pki\X509\GeneralName; use UnexpectedValueException; use function array_slice; use function count; final class IPv4Address extends IPAddress { public static function create(string $ip, ?string $mask = null): self { return new self($ip, $mask); } /** * Initialize from octets. */ public static function fromOctets(string $octets): self { $mask = null; $bytes = unpack('C*', $octets); $bytes = $bytes === false ? [] : $bytes; switch (count($bytes)) { case 4: $ip = implode('.', $bytes); break; case 8: $ip = implode('.', array_slice($bytes, 0, 4)); $mask = implode('.', array_slice($bytes, 4, 4)); break; default: throw new UnexpectedValueException('Invalid IPv4 octet length.'); } return self::create($ip, $mask); } protected function octets(): string { $bytes = array_map('intval', explode('.', $this->ip)); if (isset($this->mask)) { $bytes = array_merge($bytes, array_map('intval', explode('.', $this->mask))); } return pack('C*', ...$bytes); } }
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