PHP session and Cookie Differences _php tutorial

The difference between a cookie and a session in PHP:

1. The cookie data is stored on the client's browser and the session data is placed on the server.

2, the cookie is not very safe, others can be stored in the local cookie and cookie spoofing, considering that security should use the session.

3. Session will be saved on the server for a certain period of time. When the number of accesses increases, the performance of your server will be compared, and cookies should be used in consideration of mitigating server performance.

4, the limit of a single cookie on the client is 3K, that is, a site in the client store cookies can not be 3 K.

So personal advice: the login information and other important information stored as a session, other information if necessary to retain, can be placed in a cookie .

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