Command Line – How to Quickly Get the Complete Path to a File for Terminal Use

To display the full path of a file in the terminal just drag the file's icon into the terminal, and the full path of the file will be displayed enclosed by two apostrophes (single quotation mark characters). It's that simple.

In Ubuntu 20.04 and later drag and drop of files or directories doesn't work from the desktop, but does work in other locations including dragging from the desktop in Files file manager.

Have you tried symlinking the php binary from /usr/bin?

Assume your XAMPP installation is in default location /opt/lampp

This is the command to achieve that (in your case):

sudo ln -s /opt/lampp/bin/php /usr/bin/php