易优CMS调用会员阅读权限的名称函数写法示例

if (!function_exists('diy_getArcrank')){
//显示文档的会员阅读权限名称
function diy_getArcrank($arcrank = '')
{
static $users_level_list = [];
if (empty($users_level_list)) {
$users_level_list = \think\Db::name('users_level')->field('level_name,level_value')
->where('lang', get_current_lang())
->order('is_system desc, level_value asc')
->getAllWithIndex('level_value');
}
if (!empty($users_level_list[$arcrank])) {
return $users_level_list[$arcrank]['level_name'];
} else if (empty($arcrank)) {
$firstUserLevel = current($users_level_list);
return $firstUserLevel['level_name'];
} else {
return '';
}
}
}