Source code example for Web Database Applications
Unless otherwise stated, the source code distributed with this book can be
redistributed in source or binary form so long as an acknowledgment appears
in derived source files.
The citation should list that the code comes from Hugh E.
Williams and David Lane, "Web Database Application with PHP and MySQL"
published by O'Reilly & Associates.
This code is under copyright and cannot be included in any other book,
publication, or educational product without permission from O'Reilly &
No warranty is attached; we cannot take responsibility for errors or fitness
// This script logs a user out and redirects
// to the calling page.
// Restore the session
// Is the user logged in?
// Register a message to show the user
$message = "Error: you are not logged in!";
// Redirect the browser back to the calling page
// Delete the redirection session variable
// Then, use it to redirect to the calling page