获取用户关系树

gistfile1.txt

 public function getDown(&$fenxiaos,$userid){
        $user=M('user');
        $where = array(
                'shares_tree' => array('like','%|'.$userid.'|-%'),
                'status' => 1,
                'uid'=>array('in',array('2','3','5'))
         );
        $users=$user->where($where)->field('id')->select();
        foreach($users as $key=>$value){
            $fenxiaos[] = $value['id'];
            $this->getDown($fenxiaos,$value['id']);
        }
}