PHP DESTROY OR UNSET SESSION - PHP LESSON 21 STUDENTSBLOG100

There are two methods to clear php session variables. Mostly programmers use session_unset() method to clear session data.  

PHP SESSION UNSET SYNTAX:

session_unset(); - Frees all session variables

PHP SESSION DESTROY SYNTAX:

session_destroy(); - Destroys all data registered to a session

We suggest you to use session_unset method to unset all session variables.

Have doubt in session creation refer our previous tutorial "How to create PHP sessions"

PHP SESSION UNSET PROGRAM:
<?php session_start(); // To start session session_unset("username"); // clearing session variable named username if(!isset($_SESSION["username"])) { echo "Session cleared successfully"; } else { echo "Session was not cleared"; } ?>
OUTPUT:

If the session was cleared, then the output will be "Session cleared successfully" else "Session was not cleared"

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