PHP 导出 Excel 兼容 CSV XlS格式

class ExcelRead
{

    /**
     * 获取Excel文件内容
     * @param $file
     * @return mixed
     * @throws PHPExcel_Reader_Exception
     * @author Starfish
     * @date 2020-06-09 11:29
     */
    public function getExcelFileData($file) {

        $file_types = explode ( ".", $file['name'] );
        $file_type = strtolower(end($file_types));
        $excel_type = array('xls','csv','xlsx');
        if (!in_array($file_type,$excel_type)){
            echo 'file type error';exit;
        }

        $inputFileType = PHPExcel_IOFactory::identify($file['tmp_name']);
        if($file_type == 'csv') {
            $objReader = PHPExcel_IOFactory::createReader($inputFileType)
                ->setDelimiter(',')
                ->setInputEncoding('GBK')  //新版本可删除
                ->setSheetIndex(0);
        }else {
            $objReader = PHPExcel_IOFactory::createReader($inputFileType);
        }

        $objPHPExcel = $objReader->load($file['tmp_name']);

        $res = $objPHPExcel->getActiveSheet()->toArray();
        foreach ($res as $k => $v) {
            // 空值处理
            if(!$v['0']) {
                unset($res[$k]);
            }
        }

        return $res;
    }
}