How can PHP developers differentiate between HTML paths and PHP paths when using RewriteRule?

When using RewriteRule in PHP, developers can differentiate between HTML paths and PHP paths by specifying different RewriteCond conditions based on the file extension. For example, they can use a condition like %{REQUEST_FILENAME} !-f to check if the requested file does not exist, which can indicate that it is a PHP path. This way, developers can handle HTML and PHP paths differently in their RewriteRule directives.

RewriteEngine On

# Rewrite rule for HTML paths
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^\.]+)$ $1.html [NC,L]

# Rewrite rule for PHP paths
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^\.]+)$ $1.php [NC,L]