class RandomNodeProvider

RandomNodeProvider generates a random node ID

@link http://tools.ietf.org/html/rfc4122#section-4.5 RFC 4122, ยง 4.5: Node IDs that Do Not Identify the Host

Hierarchy

Expanded class hierarchy of RandomNodeProvider

1 file declares its use of RandomNodeProvider
FeatureSet.php in vendor/ramsey/uuid/src/FeatureSet.php

File

vendor/ramsey/uuid/src/Provider/Node/RandomNodeProvider.php, line 36

Namespace

Ramsey\Uuid\Provider\Node
View source 
class RandomNodeProvider implements NodeProviderInterface {
    public function getNode() : Hexadecimal {
        try {
            $nodeBytes = random_bytes(6);
        } catch (Throwable $exception) {
            throw new RandomSourceException($exception->getMessage(), (int) $exception->getCode(), $exception);
        }
        // Split the node bytes for math on 32-bit systems.
        $nodeMsb = substr($nodeBytes, 0, 3);
        $nodeLsb = substr($nodeBytes, 3);
        // Set the multicast bit; see RFC 4122, section 4.5.
        $nodeMsb = hex2bin(str_pad(dechex(hexdec(bin2hex($nodeMsb)) | 0x10000), 6, '0', STR_PAD_LEFT));
        // Recombine the node bytes.
        $node = $nodeMsb . $nodeLsb;
        return new Hexadecimal(str_pad(bin2hex($node), 12, '0', STR_PAD_LEFT));
    }

}

Members

Title Modifiers Object type Summary Overriden Title
RandomNodeProvider::getNode public function Returns a node ID Overrides NodeProviderInterface::getNode