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 TWiki scripts run in on the web server.
- Note: For security reasons, only those 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 a variable is undefined (as against being set to the empty string) it will be returned as
not set. - Category: SystemInformationVariables
- Related: HTTP_HOST, REMOTE_ADDR, REMOTE_PORT, REMOTE_USER
r2 - 12 Nov 2012 - 08:22:16 - TWikiContributor
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