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public function _initialize()    {
           if (!strpos($_SERVER['REQUEST_URI'], 'login')) {
               if (empty($_SESSION['isAgentLogin']) || empty($_SESSION['isAgentUser'])) {
                   header('Location:' . U('login'));            }        }        $subList = $this->getSubList($_SESSION['isAgentUserId']);        $subIdList = array_map('array_shift', $subList);        $this->subIdList = implode(',', $subIdList);//        print_r($this->subIdList);//        die();    }    /** PHP递归合并所有下级     * array_merge($a1,  null)   null     * @param $id     * @return array     */    private function getSubList($id)    {
           $subList = [];        $list = getData("user", "all", " 1=1 and top = '{
   $id }'");        foreach ($list as $value) {
               $subList = array_merge($subList, $this->getSubList($value['id']));        }        return array_merge($list, $subList);    }

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