Including Perl CGI output

Well, this is my first post on this list, so here goes :-) I have a Perl CGI script that returns a plain piece of text to me. I used to include this output in my documents with SSI but now I have moved to PHP I am not sure how to get the same result as I am not mixing two languages. I can include output from a PHP file using: <?PHP require ('/xxx/xxx.php3'); ?> But it doesn't work for Perl scripts Has anyone get any ideas? Thanks in advance Adam Charnock