>[info] 预计算时长 调用本接口，根据考勤系统的排班情况，预计算员工加班、出差及请假的时长信息。 **官方文档地址：** [链接](https://open.dingtalk.com/document/orgapp-server/calculate-duration-based-on-attendance-scheduling) ***** * 代码： ~~~ $json = [ 'userid' => '304xxxx0774', 'biz_type' => 3, 'from_time' => '2021-08-15', 'to_time'=>'2021-08-17', 'duration_unit'=>'day', 'calculate_model' =>0 ]; Approve::durationCalculate($json); ~~~