/**
* @brief 根据参数或instance获取该instance内部序号
*
* @param $instance 指定的instance字符串，不传则为当前
*
* @return
*/
public static function getInstanceIndex($instance = null)
{
if ($instance === null) {
$instance = self::$_instance;
}
if (empty(self::$_instance_idx)) {
self::$_instance_idx = Bd_Conf::getConf('/i18n/i18n/instances');
if (empty(self::$_instance_idx)) {
Bd_Log::warning(" instances => index is empty! check /i18n/i18n.conf");
}
}
foreach (self::$_instance_idx as $_v) {
if ($_v['instance'] === $instance) {
return $_v['index'];
}
}
return null;
}
