As far as I can tell this is not possible. SSI are include-tags in your HTML pages. These directives are processed by the webserver at the time the server receives the request for that HTMLpage.

When a server gets a request for a script of some sort (Perl, Python, Shell, or whatever) it executes this script. Period. There is no SSI in CGI-scripts.

All you can do with SSI however -and a very lot more- can be done in Perl, so why do you want to use SSI in a Perlscript anyway?

Jouke Visser, Perl 'Adept'