if( strpos( $_SERVER['REQUEST_URI'], 'reviews' ) !== false ) // Check if url contains 'reviews'
$uribits = explode("/",$_SERVER['REQUEST_URI']); 'explode uri'
$operator_slug = $uribits[3]; 'get operator name from exploded uri'
header('Location: http://www.superfreeslotgames.com/mobile/reviews'.$operator_slug.$subid_url ); // new redirect
} else {
header('Location: http://www.superfreeslotgames.com/mobile/'.$subid_url ); // default to standard redirect
}