Databases MySQL Database PHP
Pure PHP Point of sale system with MySQL
The files don’t have a structure, but like I said, it’s an example. I also write this because it either serves someone else or it serves myself for some references.
For data persistence it uses MySQL. This POS Save products and sales. It does not handle user permissions. We store the shopping cart in the session, and well, I better explain it in parts in this post.
Obviously this POS software is free and open source.