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<?php /** * This file is part of the ramsey/uuid library * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. * * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> * @license http://opensource.org/licenses/MIT MIT * @link https://benramsey.com/projects/ramsey-uuid/ Documentation * @link https://packagist.org/packages/ramsey/uuid Packagist * @link https://github.com/ramsey/uuid GitHub */ namespace Ramsey\Uuid; use DateTime; use JsonSerializable; use Ramsey\Uuid\Converter\NumberConverterInterface; use Ramsey\Uuid\Exception\UnsatisfiedDependencyException; use Ramsey\Uuid\Exception\UnsupportedOperationException; use Serializable; /** * UuidInterface defines common functionality for all universally unique * identifiers (UUIDs) */ interface UuidInterface extends JsonSerializable, Serializable { /** * Compares this UUID to the specified UUID. * * The first of two UUIDs is greater than the second if the most * significant field in which the UUIDs differ is greater for the first * UUID. * * * Q. What's the value of being able to sort UUIDs? * * A. Use them as keys in a B-Tree or similar mapping. * * @param UuidInterface $other UUID to which this UUID is compared * @return int -1, 0 or 1 as this UUID is less than, equal to, or greater than `$uuid` */ public function compareTo(UuidInterface $other); /** * Compares this object to the specified object. * * The result is true if and only if the argument is not null, is a UUID * object, has the same variant, and contains the same value, bit for bit, * as this UUID. * * @param object $other * @return bool True if `$other` is equal to this UUID */ public function equals($other); /** * Returns the UUID as a 16-byte string (containing the six integer fields * in big-endian byte order). * * @return string */ public function getBytes(); /** * Returns the number converter to use for converting hex values to/from integers. * * @return NumberConverterInterface */ public function getNumberConverter(); /** * Returns the hexadecimal value of the UUID. * * @return string */ public function getHex(); /** * Returns an array of the fields of this UUID, with keys named according * to the RFC 4122 names for the fields. * * * **time_low**: The low field of the timestamp, an unsigned 32-bit integer * * **time_mid**: The middle field of the timestamp, an unsigned 16-bit integer * * **time_hi_and_version**: The high field of the timestamp multiplexed with * the version number, an unsigned 16-bit integer * * **clock_seq_hi_and_reserved**: The high field of the clock sequence * multiplexed with the variant, an unsigned 8-bit integer * * **clock_seq_low**: The low field of the clock sequence, an unsigned * 8-bit integer * * **node**: The spatially unique node identifier, an unsigned 48-bit * integer * * @return array The UUID fields represented as hexadecimal values */ public function getFieldsHex(); /** * Returns the high field of the clock sequence multiplexed with the variant * (bits 65-72 of the UUID). * * @return string Hexadecimal value of clock_seq_hi_and_reserved */ public function getClockSeqHiAndReservedHex(); /** * Returns the low field of the clock sequence (bits 73-80 of the UUID). * * @return string Hexadecimal value of clock_seq_low */ public function getClockSeqLowHex(); /** * Returns the clock sequence value associated with this UUID. * * @return string Hexadecimal value of clock sequence */ public function getClockSequenceHex(); /** * Returns a PHP `DateTime` object representing the timestamp associated * with this UUID. * * The timestamp value is only meaningful in a time-based UUID, which * has version type 1. If this UUID is not a time-based UUID then * this method throws `UnsupportedOperationException`. * * @return DateTime A PHP DateTime representation of the date * @throws UnsupportedOperationException If this UUID is not a version 1 UUID * @throws UnsatisfiedDependencyException if called in a 32-bit system and * `Moontoast\Math\BigNumber` is not present */ public function getDateTime(); /** * Returns the integer value of the UUID, converted to an appropriate number * representation. * * @return mixed Converted representation of the unsigned 128-bit integer value * @throws UnsatisfiedDependencyException if `Moontoast\Math\BigNumber` is not present */ public function getInteger(); /** * Returns the least significant 64 bits of this UUID's 128 bit value. * * @return string Hexadecimal value of least significant bits */ public function getLeastSignificantBitsHex(); /** * Returns the most significant 64 bits of this UUID's 128 bit value. * * @return string Hexadecimal value of most significant bits */ public function getMostSignificantBitsHex(); /** * Returns the node value associated with this UUID * * For UUID version 1, the node field consists of an IEEE 802 MAC * address, usually the host address. For systems with multiple IEEE * 802 addresses, any available one can be used. The lowest addressed * octet (octet number 10) contains the global/local bit and the * unicast/multicast bit, and is the first octet of the address * transmitted on an 802.3 LAN. * * For systems with no IEEE address, a randomly or pseudo-randomly * generated value may be used; see RFC 4122, Section 4.5. The * multicast bit must be set in such addresses, in order that they * will never conflict with addresses obtained from network cards. * * For UUID version 3 or 5, the node field is a 48-bit value constructed * from a name as described in RFC 4122, Section 4.3. * * For UUID version 4, the node field is a randomly or pseudo-randomly * generated 48-bit value as described in RFC 4122, Section 4.4. * * @return string Hexadecimal value of node * @link http://tools.ietf.org/html/rfc4122#section-4.1.6 */ public function getNodeHex(); /** * Returns the high field of the timestamp multiplexed with the version * number (bits 49-64 of the UUID). * * @return string Hexadecimal value of time_hi_and_version */ public function getTimeHiAndVersionHex(); /** * Returns the low field of the timestamp (the first 32 bits of the UUID). * * @return string Hexadecimal value of time_low */ public function getTimeLowHex(); /** * Returns the middle field of the timestamp (bits 33-48 of the UUID). * * @return string Hexadecimal value of time_mid */ public function getTimeMidHex(); /** * Returns the timestamp value associated with this UUID. * * The 60 bit timestamp value is constructed from the time_low, * time_mid, and time_hi fields of this UUID. The resulting * timestamp is measured in 100-nanosecond units since midnight, * October 15, 1582 UTC. * * The timestamp value is only meaningful in a time-based UUID, which * has version type 1. If this UUID is not a time-based UUID then * this method throws UnsupportedOperationException. * * @return string Hexadecimal value of the timestamp * @throws UnsupportedOperationException If this UUID is not a version 1 UUID * @link http://tools.ietf.org/html/rfc4122#section-4.1.4 */ public function getTimestampHex(); /** * Returns the string representation of the UUID as a URN. * * @return string * @link http://en.wikipedia.org/wiki/Uniform_Resource_Name */ public function getUrn(); /** * Returns the variant number associated with this UUID. * * The variant number describes the layout of the UUID. The variant * number has the following meaning: * * * 0 - Reserved for NCS backward compatibility * * 2 - The RFC 4122 variant (used by this class) * * 6 - Reserved, Microsoft Corporation backward compatibility * * 7 - Reserved for future definition * * @return int * @link http://tools.ietf.org/html/rfc4122#section-4.1.1 */ public function getVariant(); /** * Returns the version number associated with this UUID. * * The version number describes how this UUID was generated and has the * following meaning: * * * 1 - Time-based UUID * * 2 - DCE security UUID * * 3 - Name-based UUID hashed with MD5 * * 4 - Randomly generated UUID * * 5 - Name-based UUID hashed with SHA-1 * * Returns null if this UUID is not an RFC 4122 variant, since version * is only meaningful for this variant. * * @return int|null * @link http://tools.ietf.org/html/rfc4122#section-4.1.3 */ public function getVersion(); /** * Converts this UUID into a string representation. * * @return string */ public function toString(); }