How can isset() and !isset be used to verify the success of session deletion in PHP?

To verify the success of session deletion in PHP, you can use isset() and !isset to check if the session variables are still set after calling session_destroy(). If the session variables are unset, it indicates that the session deletion was successful.

// Start the session
session_start();

// Perform any necessary operations

// Destroy the session
session_destroy();

// Check if session variables are unset
if (!isset($_SESSION['your_session_variable'])) {
    echo "Session deletion was successful.";
} else {
    echo "Session deletion failed.";
}