SSI_ROOT
The path of the topmost file. All include requests must be in this directory
or a child of this directory.
Example:
<!--#echo var=SSI_DIR -->
Note: You can use echo to display a value set by the set or global
directives.
URI Same as DOCUMENT_URL
URL Same as DOCUMENT_URL
USERID
Same as REMOTE_USER.
USERNAME
Same as REMOTE_USER.
Note: All headers sent by the client (such as Set-Cookie) are prefixed by ″HTTP_″,
and their values can be extracted. To access variables that are headers, prefix
the variable name with ″HTTP_″. You can also create new variables using
the HTTP_set() predefined function.
Chapter7. Writing Server API programs 127