Is it possible to set a SetEnv variable in an .htaccess file differently depending on hostname?
For example, I need my .htaccess file to have the following value:
SetEnv PYRO_ENV production
On production boxes, and...
SetEnv PYRO_ENV stage
On staging boxes. The .htaccess file is version controlled, which is the reason I'm looking for a conditional solution.
Fabian Schmengler
For conditional settings there is SetEnvIf:
SetEnvIf Host ^stage\.example\.com$ PYRO_ENV=stage
SetEnvIf Host ^(www\.)?example\.com$ PYRO_ENV=production
You can, with mod_rewrite:
RewriteEngine on
RewriteCond %{HTTP_HOST} ^stage\.domain\.com$
RewriteRule (.*) $1 [E=PYRO_ENV:stage]
RewriteCond %{HTTP_HOST} ^www\.domain\.com$
RewriteRule (.*) $1 [E=PYRO_ENV:production]
来源：https://stackoverflow.com/questions/10727720/conditional-setenv-in-htaccess