thinkPHP

public function getGroups($uid) {
        static $groups = array();
        if (isset($groups[$uid]))
            return $groups[$uid];
        $user_groups = M()
            ->table($this->_config['AUTH_GROUP_ACCESS'] . ' a')
            ->where("a.uid='$uid' and g.status='1'")
            ->join($this->_config['AUTH_GROUP']." g on a.group_id=g.id")
            ->field('uid,group_id,title,rules')->select();
        $groups[$uid]=$user_groups?:array();
        return $groups[$uid];
    }