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Run PHP from a .html extension
I recently had an odd request, they wanted their site to appear as HTML but run PHP; my first thought was why? but, if thats what they want, thats what they get.
It turned out to be a very simple task. If you open up your .htaccess file and add the following line:
AddType application/x-httpd-php .html
.html will execute as PHP!
Job done. 
