A teaching example that creates and implements a faux webstore (uses HTML, CSS, JS, PHP, JQUERY, SQL, ERD)
start with php/demo.php, the main page
http://onyx.csit.parkland.edu/~cschultz/webstore_demo/php/demo.php
I used resources and ideas from the following:
https://community.tableau.com/docs/DOC-1236
https://tutorialzine.com/2009/09/shopping-cart-php-jquery