Dynamic Titles

Hello, im trying to make the CMS system im using more SEO friendly by giving each page it's own title. Right now, the system assigns all pages the same general title. I would like to use PHP to discertain which page is being viewed and in turn, which title should be used.

I have put in the title tags the variable "$title". As for the PHP im using, I scripted the following:

$url = "http://'.$_SERVER['SERVER_NAME']''.$_SERVER['REQUEST_URI']'";
switch ( $url )
{
    default:
        $title = "Photoshop tutorials, Flash tutorials, and more! Newtuts Tutorial Search";
        break;

    case "$config[HTTP_SERVER]help.php" :
        $title = "Newtuts Help";
        break;
}
 
Right now, im getting this error:
Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING in /home/a7201901/public_html/includes/classes/tutorial.php on line 803 
 
Can someone please help me with this?



Thanks!