CommentController::getMentionIds

static function getMentionIds($text)
{
	preg_match_all("/\[user\s*=\s*([^\]]*)\](.+?)\[\/user\]/is" . BX_UTF_PCRE_MODIFIER, $text, $mentionList);
	$mentionList = $mentionList[1];
	if (empty($mentionList) || !is_array($mentionList))
		return array();

	$mentionList = array_unique($mentionList);
	return $mentionList;
}