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Course Content

Log out Operation

Learn how to log out in php in 30 seconds using the simple steps outlined in this process. Logging out of PHP programs is a matter of convenience and efficiency. It is neither easy nor difficult. But still I think it can be improved by using logout links in different locations of websites. How to log out in this php program to guide step by step in this process.


You'll start by creating a login database and table, and then a login form with just two fields: username and password. Then you'll connect to your MySQL table "login" and paste some PHP code into it. In both login and logout, I'll utilise a session for authentication. This is your "login" information.

  • On successful login, create a session variable.
  • If the session variable is not set in the home page, redirect to the login page.
  • When you log out, you should delete the session variable.

Logout widgets are non-visual widgets that allow you to stop a user's session and redirect to a mashup or a URL. The Logout function's authentication is comparable to the ThingWorx Platform's authentication.

As with any other variable, you can use the isset() function to see if a variable has been set in a user's session. You must call session start() before using isset() on a session variable because the $_SESSION superglobal is only initialised once session start() has been invoked.

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