php-cgi does not pass HTTP basic authentication

[pondermatic]

I installed Learning Locker on a server with Apache, FastCGI and PHP, but could not send learning statements until I added the following to .htaccess

# php-cgi under Apache does not pass HTTP Basic user/pass to PHP by default
RewriteCond %{HTTP:Authorization} ^(.+)$
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

[pondermatic]

This rewrite workaround is documented in the Symphony\Component\HttpFoundation\ServerBag class.

I have tested with Apache 2.4.9, mod_fcgid 2.3.9 and php 5.5.11 (non thread safe) and also with php 5.5.1 (thread safe) running as an Apache module.

This workaround should be added to the .htaccess file, or at least added to the "Installing" wiki.