<?php/*** @desc excel接口* @author mengdejun*/interface  IExcel{        //导入excel        public function import($fileName,$convert_callback_function=null);        //导出excel        public function export($fileName="excel");        //添加行        public function addRow(array $array,$sheet="sheet1");        //添加表头        public function addHead(array $array,$sheet="sheet1");        //添加工作簿        public function  addSheet($sheet);        //释放资源        public function release();}?>