With Apache1, you cannot run a page with SSI and PHP parsing at the same time.
With Apache2, you can, but, it isn't recommended. Apache2 would be something like:
Code:
<FilesMatch "\.htm(l)?$">
SetOutputFilter INCLUDES
</FilesMatch>
AddType application/x-httpd-php .htm .html
maybe..... not all servers will allow you to mix them.