PHP 找出所有上级部门 ThinkPHP6框架

// 获取部门上级ID
public function GetParentDepartments($dep_id)
{
    $result = Db::table("department")->field("id,pid,name")->select()->toArray();
    return getParentss($result, $dep_id);
}

public function getParentss($array, $p_id)
{
    $sups = array();
    foreach ($array as $item) {
        if ($item['id'] == $p_id) {
            $sups[] = $item;
            $sups = array_merge($sups, getParentss($array, $item['pid']));
        }
    }
    return $sups;
}

GetParentDepartments(100);