Hello,
.php is required when you need some serverside code to run on your page.
The only functionality which requires a PHP page in Wappler is the security enforcer.
For everything else, you can use plain HTML pages.
But there is really no difference for your server if it’s an HTML or a PHP page, if you just run simple HTML code.
No,
If you use database you can still use HTML as no PHP code is used in the page, to display the dynamic data. App Connect, which is a JavaScript framework is used for that.
Only use PHP if you need to restrict access to the page using the security enforcer.