php解析excel文件

public static function getStaffByXlsx($path) {
　　　　　/*dirname(__file__): 当前代码所在的目录，$path: ”／文件名“　*/
        $PHPReader = PHPExcel_IOFactory::createReaderForFile(dirname(__file__) . $path);
　　　　　/*加载当前目录下边的文件*/
        $PHPExcel = $PHPReader->load(dirname(__file__) . $path);
　　　　　/*获取表的第一个sheet*/
        $currentSheet = $PHPExcel->getSheet(0);
　　　　 /*获取表里内容的最大列数*/
        $allColumn = $currentSheet->getHighestColumn();
        /*获取表里内容的最大行数*/
        $allRow = $currentSheet->getHighestRow();
        $data = array();

        for ($currentRow = 3; $currentRow <= $allRow; $currentRow++) {
            for($currentColumn= 'A'; $currentColumn<= $allColumn; $currentColumn++){
                $address = $currentColumn.$currentRow;
                $val = $currentSheet->getCell($address)->getValue();
                $data[$currentRow - 3][$currentColumn] = $val;
            }
        }

        if (empty($data)) {
            return ['error' => 1, 'message' => 'data is empty'];
        }

        return $data;
    }