Solution:
1. Use XbitHack on , but you have to rewrite the /html/cgi-bin/ cgi scripts to javascript because of vulnerability https://www.owasp.org/index.php/Server-Side_Includes_%28SSI%29_Injection
<Directory /var/www/>
##includes addded by d
##includes addded by d
#$Options -Indexes FollowSymLinks MultiViews +Includes
Options -Indexes FollowSymLinks MultiViews +IncludesNOEXEC
#AllowOverride None
AllowOverride All
Order allow,deny
allow from all
#AddType text/html .shtml
#AddOutputFilter INCLUDES .html .shtml
XbitHack on
</Directory>
Options -Indexes FollowSymLinks MultiViews +IncludesNOEXEC
#AllowOverride None
AllowOverride All
Order allow,deny
allow from all
#AddType text/html .shtml
#AddOutputFilter INCLUDES .html .shtml
XbitHack on
</Directory>
<Directory "/var/www/html/whitt.com/html"> Options FollowSymLinks +Includes AllowOverride All AddType text/html .shtml DirectoryIndex index.php index.html index.html.var index.shtml </Directory>
Create a SSI test file and save it under /var/www/ssi-test.shtml.
Test it works <html> <head> <title>SSI Test Page </head> <body> <!--#echo var="DATE_LOCAL" --> </body> </html>
2. use mod_rewrite, http://corz.org/serv/tricks/htaccess2.php to rewrite php to html, this could have you penalized by the search engines.
3. use javascript http://www.boutell.com/newfaq/creating/include.html
REFERENCES
//IncludesNOEXEC
//How to use SSI