This isn't a question, just a tip that I hope someone finds useful. :)
If you're like me, you like to be able to insert PHP inside HTML files for various purposes. You can allow PHP parsing in other file types. Here's how you do it in HTML files.
1) sudo nano /etc/apache2/httpd.conf
2) Add the following lines:
# Allow PHP to run in HTML files
AddHandler php5-script .php .html
3) Restart Apache: sudo /etc/init.d/apache2 restart
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