[php] 세션과 쿠키의 차이 (differences session and cookie)

php에서 세션과 쿠키의 차이를 정리해 봅니다.

A Cookie

- Cookies are stored in the browser as a text file format.

- It is stored limit amount of data.It is only allowing 4kb[4096bytes

- we can access the cookies values easily. so it is less secure.

- a cookie can be stored for months or years depending on the lifespan of the cookie

- setting the cookie time to expire the cookie.

A Session

- a collection of data  are stored in server side.

- can be larger than a cookie. Actually, It is stored an unlimited amount of data

- more secure than cookie as it is stored in server side. 

- the data in the session is lost when the web browser is closed.

- using session_destory(), we will destroyed the sessions.

2) 1- Session stored Server side, however cookie is stored client side

2- Session is created and maintained by the web server or application server, however is created and maintained by the developer