On 16.04 Ubuntu, I want to run a cakephp app on the localhost to make some modifications. How can I do that?
Installed application has files in 3 different directories:

1. opt
2. etc
3. usr

I know apache files run on var/www/html but how can I move those installed files there to run the application? As far as I know, index.php is the start file of php projects but for cakephp, there is a default.ctp file for the main program page, of course there are other index.php files for other pages, and I am really stuck with that.

Thanks in advance.