What does cookie session mean?

Cookie session refers to tracking the user's entire session through Cookie technology to ensure that the server can identify the user and maintain the user's status. This is very useful for saving user data, identifying user identity, and performing personalized settings.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

Cookie session refers to tracking the user's entire session through Cookie technology. In Web programs, session technology is a common technology used to track the user's entire session to ensure that the server can identify the user and maintain the user's status.

When the browser establishes a connection with the server, the browser will send a request and the server will respond. Before the browser is closed, all requests and responses constitute a session. However, the HTTP protocol is stateless, which means that the server cannot track the session from the connection. In order to solve this problem, the server will send the required data to the browser through the set-cookie response header when it responds for the first time, and the browser will automatically save it as a cookie. On the next request, the browser will automatically carry a cookie request header, which contains the cookie information in the browser. In this way, the server can identify the user through the cookie and maintain the user's status, thus forming a cookie session.

The main function of the cookie session is to track the user's entire session to ensure that the server can identify the user and maintain the user's status. This is useful for saving user data, identifying users, and personalizing them. For example, in a shopping website, a cookie session can record the contents of the user's shopping cart so that the user can continue browsing and purchasing the next time he visits.

The above is the detailed content of What does cookie session mean?. For more information, please follow other related articles on the PHP Chinese website!