ENV{"varname"} -- inspect the value of an environment variable
- Returns the current value of the environment variable in the CGI (Common Gateway Interface) environment. This is the environment that the CommandAndCGIScripts are running in.
- Note: For security reasons, only those environment variables whose names match the regular expression in
{AccessibleENV}in the Security Settings/Miscellaneous section ofconfigurecan be displayed. Any other variable will just be shown as an empty string, irrespective of its real value. - Example:
%ENV{MOD_PERL}%displays as: not set - If an environment variable is undefined (as against being set to the empty string) it will be returned as
not set. - Related: HTTP_HOST, REMOTE_ADDR, REMOTE_PORT, REMOTE_USER