Apache: The Definitive Guide, 3rd Edition

Name

SetEnv

Synopsis

SetEnv variable value
Server config, virtual hosts

This directive sets an environment variable that is then passed to CGI scripts. We can create our own environment variables and give them values. For instance, we might have several virtual hosts on the same machine that use the same script. To distinguish which virtual host called the script (in a more abstract way than using the HTTP_HOST environment variable), we could make up our own environment variable VHOST:

<VirtualHost host1>
SetEnv VHOST customers
...
</VirtualHost>
<VirtualHost host2>
SetEnv VHOST salesmen
...
</VirtualHost>