DateIntervalNormalizer does not support weeks and days together

[oneNevan]

Symfony version(s) affected

5.4.12,6.1.4

Description

Since PHP 8.0 DateInterval::construct supports periods containing both D and W period designators

echo (new \DateInterval('P3W2D'))->format('%d');
// outputs '2' prior PHP 8.0
// outputs '23' in PHP >= 8.0

The problem is the built-in DateIntervalNormalizer does not support it, so it throws exception if both weeks and date exist in source period string as current regular expression in method isISO8601 does not allow it

        if (!$this->isISO8601($data)) {
            throw new UnexpectedValueException('Expected a valid ISO 8601 interval string.');
        }

How to reproduce

// PHP >= 8.0
$normalizer = new \Symfony\Component\Serializer\Normalizer\DateIntervalNormalizer();
$object = $normalizer->denormalize('P2W6D', \DateInterval::class, null, [
    'dateinterval_format' => '%rP%yY%mM%wW%dDT%hH%iM%sS',
]);
// expected: $object instanceof \DateInterval
// actual: \Symfony\Component\Serializer\Exception\UnexpectedValueException thrown

Possible Solution

I believe a possible solution would be to update regular expression used in isISO8601 method for PHP versions >= 8.0, like this:

    private function isISO8601(string $string): bool
    {
        if (PHP_VERSION_ID >= 80000) {
            return preg_match('/^[\-+]?P(?=\w*(?:\d|%\w))(?:\d+Y|%[yY]Y)?(?:\d+M|%[mM]M)?(?:\d+W|%[wW]W)?(?:\d+D|%[dD]D)?(?:T(?:\d+H|[hH]H)?(?:\d+M|[iI]M)?(?:\d+S|[sS]S)?)?$/', $string);
        }

        return preg_match('/^[\-+]?P(?=\w*(?:\d|%\w))(?:\d+Y|%[yY]Y)?(?:\d+M|%[mM]M)?(?:(?:\d+D|%[dD]D)|(?:\d+W|%[wW]W))?(?:T(?:\d+H|[hH]H)?(?:\d+M|[iI]M)?(?:\d+S|[sS]S)?)?$/', $string);
    }

Additional Context

No response

[carsonbot]

Hey, thanks for your report!
There has not been a lot of activity here for a while. Is this bug still relevant? Have you managed to find a workaround?

[carsonbot]

Just a quick reminder to make a comment on this. If I don't hear anything I'll close this.

[oneNevan]

this is still an issue, let's keep it open, I think I can open a PR for it, maybe sometime this week