Dynamically output the page title with php

I am trying to output the page title dynamically. I am using induces and this script is withing the header.php the goal is to output the header dynamically using a case/switch statement. here is my code:

<?php  $title ;
    switch($_SERVER['PHP_SELF'])  {
        case '/index.php': 
            $title = 'Home'; 
            break;
        case '/about.php': 
            $title = 'About'; 
            break;
        case '/services.php': 
            $title = 'Services'; 
            break;
        case '/portfolio.php': 
            $title = 'Portfolio'; 
            break;
        case '/staff.php': 
            $title = 'Staff'; 
            break;
        case '/contact.php': 
            $title = 'Contact us'; 
            break;
} ?>  <title><?php echo $title ?></title>

I am getting a error telling me my variable $title is not defined?

What i am doing wrong?

Answer

In your first line, you have

<?php  $title ;

This $title ; shouldn’t be there.

And, as Kailash Ahirwar already mentioned, it’s always a good idea to provide a default value for your $title:

switch($_SERVER['PHP_SELF']) {
    [...]
    default:
        $title = "Default title goes here";
}