Build mini website, mostly php part

I have a mini website, mostly complete, only need php part to be done, details here: Must be done within ~6hours Functional Registration In the registration page use PHP to conduct server-side validation. Validation should check that no fields are left blank, that the password fields match and that the password is at least 8 characters. If validation on the server-side is successful, open a text file, [login to view URL] and write all the user registration information into the file (the formatting is up to you). Multiple registrations should be possible and each new registration should be separated by a blank line. A message should be displayed informing the user that the registration was successful or that there were errors while processing on the server Functional Login & Logout In side menu area add a link labeled “Login”. When clicked, the link should direct the user to a new page: login.php. This page should include a form with two fields: - Email Address - Password If both fields are filled out, PHP should be used to read the [login to view URL] file and find a registration record that matches the email address and password entered by the user. If the login is successful, a PHP Session should be created and used to persistently keep the user logged in throughout all pages of the website. When logged in, the “Login” link on the side menu should display “Logout” instead. Clicking the Logout link should destroy the Session and re-direct the user to the website home page. Add to Cart A link should be added either in the side menu or in the header that allows users who are logged in to access their shopping cart. The shopping cart page ([login to view URL]) should display all items that have been added to the cart by the user during their session. Each items associated price should also be listed along with an overall total that should appear at the bottom of the cart page. The “add to cart” link must work to call upon PHP to store the item and its price in Session variable(s). The user should be brought to the cart page and given the option to either “continue shopping” – redirects the user to the page that contains the list of items, or “Checkout”