CGI Environmental Variables

When a CGI application is called, the server passes it environmental information in the env array. This array contains information about the server application, the browser application, server and browser addresses, protocol version, etc. The env also contains query information, if any, that was sent with the request.

The following links call the CGI /cgi-bin/params.vi which simply generates an HTML document describing the contents of the request.

cgi-bin/params.vi

This call does not contain query information.

cgi-bin/params.vi?query_parameter

This call contains the query string query_parameter.

cgi-bin/params.vi/extra/path

This call passes additional path information /extra/path to the CGI VI. The CGI receives this path information in the PATH_INFO and PATH_TRANSLATED environmental variables. See the Customized Page CGI example for usage of the PATH_INFO environmental variable.

cgi-bin/params.vi/extra/path?query_parameter

This call passes additional path information /extra/path as well as the query string query_parameter.