How can the server know that it is my script that sends the request, and not someone writes to the console?

Question

PHP

If the question seems too noob to you, please indicate the direction of movement to understand the question.
Why did such a question arise?
Here is the lesson
loftblog.ru/2013/02/11/backbone-js-22-udalenie-dan... Does
everyone come in and crash the whole database to me?

Answer 1

Everyone has the same question ...
Think about how Toaster or Vkontakte distinguishes who is writing from where.
And read about authentication and authorization

Answer 2

Not at all. It is only possible to send some key with the request, which will identify the request as your request.