if ( $_SERVER['REQUEST_URI'] == str_replace('http://' . $_SERVER['HTTP_HOST'], '', $vbulletin->options['bburl']) . '/index.php' ) {
header('HTTP/1.1 301 Moved Permanently');
header('Location: ' . $vbulletin->options['bburl'] . '/');
exit();
}
if ( strpos($_SERVER['HTTP_HOST'], 'www.') === 0 && strpos($vbulletin->options['bburl'], 'http://www.') === false ) {
header('HTTP/1.1 301 Moved Permanently');
header('Location:
http://' . substr($_SERVER['HTTP_HOST'], 4) . $_SERVER['REQUEST_URI']);
exit();
} elseif ( strpos($_SERVER['HTTP_HOST'], 'www.') !== 0 && strpos($vbulletin->options['bburl'], 'http://www.') === 0 ) {
header('HTTP/1.1 301 Moved Permanently');
header('Location:
http://www.' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
exit();
}