I have Joomla installed in my computer, but recently have been writing php files that aren\'t related to the Joomla-managed site. For some reason, when I try to open those p
PHP is interpreted in the server, not the browser. Whatever's going wrong, you need to look at the SERVER side to resolve it.
My first guess: maybe you didn't suffix the file ".php" (so the server doesn't recognize it as a PHP file?)
Second guess: is the directory containing your PHP files configured to parse PHP?
If you have Joomla, you probably have PHP. You probably also have Apache.
So check your Apache configuration, and check your file naming conventions.