Fix for Basic Auth not being passed through with PHP in CGI mode

[graham73may]

#1 Issue fixed.

PHP_AUTH_USER & PHP_AUTH_PW are now being set if PHP is using fast CGI

[mnelson4]

FYI pulled into https://github.com/eventespresso/Basic-Auth

[sebastienbarre]

This is sorely needed, this was hard to track. Please consider merging.

[kadamwhite]

Just flagged this in core slack to see if @rmccue et al can take a look

[bigandy]

Any progress on this issue? For the moment I am using @mnelson4 version https://github.com/eventespresso/Basic-Auth which works A+

[alkema]

The solution developed here https://github.com/eventespresso/Basic-Auth is the best one in my opinion because it does not suggest any Apache-specific solutions. The handling of HTTP headers is best handled in PHP, then the plugin just works with any web server. Thanks @mnelson4!

[kadamwhite]

@rmccue Could you review this?

[MrToph]

Thanks so much, this fixed my issue with Basic Authentication not working 👍

[Tug]

I know this is quite an old one but I did a similar patch and just found out about this PR :)

This should be quite useful for sites who use CGI/FastCGI imo!

[Ipstenu]

This was approved a year ago.

A number of hosts use FastCGI and telling customers to use an htaccess workaround to force HTTP for auth is not really a good security practice. Can this please be revisited for WP 5.5?

[graham73may]

I know this is an incredibly old PR at this point but I've resolved the review comments in the hope that this might be merged one day.