(PHP) header() function

/*note*/

xml/html/css/javascript/plain
header("Content-Type: text/xml");
jpg/gif/png/
header("Content-Type: image/jpg");

Errors
header("HTTP/1.0 301 Moved Parmanently");
header("HTTP/1.0 401 Unauthorized");
header("HTTP/1.0 403 Forbidden");
header("HTTP/1.0 404 Not Found");
header("HTTP/1.0 500 Internal Server Error");

Redirect
header("Location: http://fkob.net");

No cash
header( 'Expires: Mon, 26 Jul 1997 05:00:00 GMT' );
header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s' ) . ' GMT' );
header( 'Cache-Control: no-store, no-cache, must-revalidate' );
header( 'Cache-Control: post-check=0, pre-check=0', false );
header( 'Pragma: no-cache' );