A Variable in PHP is just like with any other coding. It is used to store information to use in code without the need of repeating it over and over again or as something dynamic or user-input interceptive.
PHP (or PHP: Hypertext Preprocessor) is a server-side web scripting language designed solely for the purpose of back-end web development and it is rendered as HTML on front-end once it is viewed on a web browser.
Forms allows us to get input from the users that we then submit to the backend server for processing. Forms are created using HTML mark up but Django provides us with special tools that simplify and automate the process.
In the last tutorial, we created some pages using templates and views. In the next tutorials, we want to create new pages to create and update objects. However, It won't be rational if we let everyone do such operations.
In the last tutorial we have created a base template and also we have seen a very simple view. In this tutorial, we create some pages for our application to show a list of books and also the details of each book.