How to add a HTML or a PHP file, that includes a form, into Wordpress?

Question

I am currently working on a Wordpress project for fun. My current problem is, that I don't know how to insert my html/php pages in to WordPress so the users could see them and I could for example, get the POST data for my queries.

Answer 1

you can create a custom Template page, that contain what you like and save it into your current theme folder,

<?php /* Template Name: MyPage */ 
//do what you like
?>

after you in backend you can add a new page and select your new Template in Page's attributes->Model