[php-src] Issue #8370: parse_url mistakes hostname with path

Issue: https://github.com/php/php-src/issues/8370 Comment Author: cmb69 From the [docs](https://www.php.net/parse_url): > Partial and invalid URLs are also accepted, parse_url() tries its best to parse them correctly. parse_url looks for a scheme, and if it is missing, it has support for scheme relative URLs (e.g. "//www.j-p.pl"). But if the indicators (two slashes) are missing, the URL is treated as path. Given that [long standing behavior](https://3v4l.org/TV5A6), we cannot treat it as bug, since there may be a lot of code relying on it. IMO, WONTFIX; maybe clarifying the algorithm in the docs might be useful.