What is cookies and how it works?

Answer 1

A cookie is often used to identify a user. A cookie is a small file that the server embeds on the user's computer. Each time the same computer requests a page with a browser, it will send the cookie too. With PHP, you can both create and retrieve cookievalues.---from php5

Answer 2

cookie is file which is on user computer.
it is used to stored user information, user behaviour.
when user open any webpage its current state is get by this.
when user search anything from cookies its interesting(multiple times search results) search results are get.

Answer 3

Cookies are files created by websites you visit. They make your online experience easier by saving your browsing information