Detect Apache version in apache config?

Question

tl;dr: How do I do the following in a .conf or .htaccess file:

  # Do A


  # Do B
&         


        

Answer 1

I ran into this problem because FallbackResource is not in early versions of Apache and often clever hosting companies remove mod_rewrite once they have a version of Apache with FallbackResource. I use the following .htaccess when I want to put library code up that adapts to its environment:

    RewriteEngine on
    RewriteRule ^ - [E=protossl]
    RewriteCond %{HTTPS} on
    RewriteRule ^ - [E=protossl:s]
    RewriteRule "(^|/)\." - [F]
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_URI} !=/favicon.ico
    RewriteRule ^ index.php [L]



    FallbackResource index.php

Now of course there are some Apache versions / setups where this fails - but if mod_rewrite is there, use it and if not, hope that FallbackResource is there.