Then have a look at the Template Toolkit, which allows you to do:

My rocket ship goes:<br>
[% PERL %]
     print join ' ', reverse 'BLAST OFF!', 0..10;
[% END %]
[download]

You don't even have to lear the Template Toolkit language as you can use just Perl if you like. I don't think you can get any closer to embedding Perl than this.