[php-src] Issue #12843: `+` stripped from date strings with parse_url

Issue: https://github.com/php/php-src/issues/12843 Author: spiro-peimbertandreakis ### Description The following code: ```php <?php // Valid dates in RFC3339 format $querystr = 'from_date=2023-03-21T05:00:00+00:00&to_date=2023-11-28T20:40:01+00:00'; $parsed = null; parse_str($querystr, $parsed); var_dump($querystr, $parsed); ``` Resulted in this output: ``` string(69) "from_date=2023-03-21T05:00:00+00:00&to_date=2023-11-28T20:40:01+00:00" array(2) { ["from_date"]=> string(25) "2023-03-21T05:00:00 00:00" ["to_date"]=> string(25) "2023-11-28T20:40:01 00:00" } ``` But I expected this output instead (note the + not being stripped): ``` string(69) "from_date=2023-03-21T05:00:00+00:00&to_date=2023-11-28T20:40:01+00:00" array(2) { ["from_date"]=> string(25) "2023-03-21T05:00:00+00:00" ["to_date"]=> string(25) "2023-11-28T20:40:01+00:00" } ``` The incorrect parsed value causes an error if I try to then use it to create a DateTimeImmutable like so: ```php $normal = new DateTimeImmutable($parsed['from_date']); ``` Which throws the following error: ``` Fatal error: Uncaught Exception: Failed to parse time string (2023-03-21T05:00:00 00:00) at position 20 (0): Double time specification ``` ### PHP Version PHP 8.0.10 ### Operating System _No response_