How to get the whole page in curl?

Question

PHP

Why doesn't the curl return the entire page?
On a simple page reload, only

When you perform some action appears

and text on the page in the browser, curl does not show this text. Why?
Perhaps you need to get the contents of the 302 header? how to get it?

Answer 1

Understood in what an essence, in the answer 302 send other cookies with this answer (text). Thanks to all)