[brakken]

$text = '[ url = http://www.tehskeen.com]tehskeen[ / url ]';

require_once(DIR . '/global.php');
require_once(DIR . '/includes/class_bbcode.php');
$parser =& new vB_BbCodeParser($vbulletin, fetch_tag_list());
$parsed_text = $parser->do_parse($text, $do_html, $do_smilies, $do_bbcode, $do_imgcode, $do_nl2br, $cachable);

echo $parsed_text;

I spaced the URL tag so it would not be parsed here.

Output is same as input - it doesn't get parsed. I am running the PHP code as a script in a content block in vbportal, but I checked the paths with the DIR statement and they are correct.