LEMP stack using Twig 1.34 and bootstrap. The application is split into three parts. The root file "index.php" is the default view which also handles the search results. This calls either "search-results.phtml", "product-info.phtml" or "home.phtml" depending on the number of results from a search (if any). Next is basket.php which handles the basket and all the payment pages. The last is account.php which handles the users account information including past orders. Payment details are not stored by the site as everthing is managed with the paypal API.
As 123-reg hosting uses PHP 5.5 I have also used random_bytes from https://github.com/paragonie/random_compat.
The database at the moment is mysql as it comes with the web hosting and the traffic is unlikely to be demanding. There are seperate interfaces for the three main tables as each is handled differently although they may be combined/abstracted at a later date.
Filenames and frontend varibles use cammelCase and CapsCase for classes.
PHP uses underscore seperated varibles and funcation names and CapsCase for classes.