How to use session in PHP

Today we will explain to you how to use session in PHP. Here you can understand how we can start a session, create session variable, retrieve session variable and destroy the session.

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A session is a method which is used to store information on the server. It can be accessed in multiple webpages. We use $_SESSION to create and retrieve the session variables and it is a super global variable. To store the information in session, we need to start the session using the session_start() function.

Way to use session

  1. Create Session variable
  2. Retrieve Session variable
  3. Destroy Session variable
  4. Destroy Session

1. Create Session variable

Here, we show how to create session variables. We take one example to store logged in user details in session which will be retrieved in all other web pages.

2. Retrieve Session variable

In other webpages we don’t need to set the value of session variables. Using $_SESSION global variable we can retrieve the data after starting the session by session_start() function.

3. Destroy Session variable

We can remove session variables using the unset function. If we want to remove $_SESSION['user_id'] then we can write as below.

4. Destroy Session

We can remove all sessions using session_destroy() like below.

That’s it for today.
Thank you for reading. Happy Coding!

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