• View the provided structure: you get both an index file and another file containing a form. How are these two working together? In form-view form => require 'form-view.php'; in index.php
• Think of a funny / surprising / original name for a store that should definitely exist. => Video Call Gears
• Think of some products to sell (feel free to be creative) and update the products array with these. => Video Call Gears
• Check if all the products & prices are currently visible in the form. => Create Array of arrays

• Show an order confirmation when the user submits the form. This should contain the chosen products and delivery address).
• [!] We will learn how to save this information to a database later, so no need to do this now.

• Use PHP to check the following:
  • Required fields are not empty.
  • [!] Zip code are only numbers.
  • [*] Email address is valid.
• Show any problems (empty or invalid data) with the fields at the top of the form. Tip: use the bootstrap alerts for inspiration. If they are valid, the confirmation of step 1 is shown.
• If the form was not valid, show the previous values in the form so that the user doesn't have to retype everything.

Usually, validation is a combination of server side checks (for security, these can't be bypassed) and checks in html / JS (can be bypassed but can give live user feedback).

• Check out the possibilities of the PHP session and cookies.
• We want to prefill the address (after the first usage), as long as the browser isn't closed. Which of these techniques is the better choice here? Session

When using cookies on a live site, check any legal requirements.

• Read about get variables and what you can do with it.
• Find commented navigation and activate it. Tweak the content for your own store.
• Make a second category of products, and provide a new array for this info.
• The navigation should work as a toggle to switch between the two categories of products.

• Show the expected delivery time in the confirmation message (2h by default).
• A user can opt for express delivery (5$ for delivery in 45min).

• Show statistics about how much money has been spent. This info should be kept (can you use the session or cookies for this?) when the browser closes.
• Include the most popular product (by this user) and amount of products bought by this user.

• What kind of style would suit your store? Add a color schema and a suitable font.
• Check what you can do for validation with html and JS. Use this to improve your validation.

• Allow the user to specify how much he or she wants to buy of a certain products

Sales are almost there... last thing to do is waiting for customers on a shopping spree!