//读取用户所属用户组
$groups = $this->getGroups($uid);
$ids = array(); //保存用户所属用户组设置的所有权限规则id
foreach ($groups as $g) {
$ids = array_merge($ids, explode(',', trim($g['rules'], ',')));
}

dump($groups)
结果：
即使我定义了变量也会报错。图3