public static function generate()
{
$hex = \UIDGenerator::newTimestampedUID88(16);
$hex = str_pad($hex, static::HEX_LEN, '0', STR_PAD_LEFT);
return self::fromHex($hex);
}
/**
* Returns a UUID objects based on given input. Will automatically try to
* determine the input format of the given $input or fail with an exception.
*
* @param mixed $input
* @return UUID|null
* @throws InvalidInputException
*/
public static function create($input = false)
{
// Most calls to UUID::create are binary strings, check string first
if (is_string($input) || is_int($input) || $input === false) {
if ($input === false) {
// new uuid in base 16 and pad to HEX_LEN with 0's
$hexValue = str_pad(\UIDGenerator::newTimestampedUID88(16), self::HEX_LEN, '0', STR_PAD_LEFT);
return new static($hexValue, static::INPUT_HEX);
} else {
$len = strlen($input);
if ($len === self::BIN_LEN) {
$value = $input;
$type = static::INPUT_BIN;
} elseif ($len >= self::MIN_ALNUM_LEN && $len <= self::ALNUM_LEN && ctype_alnum($input)) {
$value = $input;
$type = static::INPUT_ALNUM;
} elseif ($len === self::HEX_LEN && ctype_xdigit($input)) {
$value = $input;
$type = static::INPUT_HEX;
} elseif ($len === self::OLD_BIN_LEN) {
$value = substr($input, 0, self::BIN_LEN);
$type = static::INPUT_BIN;
} elseif ($len === self::OLD_HEX_LEN && ctype_xdigit($input)) {
$value = substr($input, 0, self::HEX_LEN);
$type = static::INPUT_HEX;
} elseif (is_numeric($input)) {
// convert base 10 to base 16 and pad to HEX_LEN with 0's
$value = wfBaseConvert($input, 10, 16, self::HEX_LEN);
$type = static::INPUT_HEX;
} else {
throw new InvalidInputException('Unknown input to UUID class', 'invalid-input');
}
if (isset(self::$instances[$type][$value])) {
return self::$instances[$type][$value];
} else {
return new static($value, $type);
}
}
} else {
if (is_object($input)) {
if ($input instanceof UUID) {
return $input;
} elseif ($input instanceof Blob) {
return self::create($input->fetch());
} else {
throw new InvalidInputException('Unknown input of type ' . get_class($input), 'invalid-input');
}
} elseif ($input === null) {
return null;
} else {
throw new InvalidInputException('Unknown input type to UUID class: ' . gettype($input), 'invalid-input');
}
}
}
