PhpSpreadsheet读取excel【包含图片】

$reader           = \PhpOffice\PhpSpreadsheet\IOFactory::createReader('Xlsx'); //实例化阅读器对象。
$spreadsheet      = $reader->load($filename);  //将文件读取到到$spreadsheet对象中
$sheet            = $spreadsheet->getSheet(0);//sheet
$highestColumn    = $sheet->getHighestColumn(); // 取得总列数
$highestRow       = $sheet->getHighestRow(); // 取得总行数

      for ($col = 1; $col <= $highestColumnIndex; ++$col) //列数是以A列开始
        {
            $column_name = $sheet->getCellByColumnAndRow($col, 1)->getFormattedValue();
            if(in_array($column_name,array_keys($format_column)))$column[] = ['clo' => $col,'key' => $format_column[$column_name]];
        }
        // 2 根据以上确定的列直接循环取值
        for ($row = 2; $row <= $highestRow; ++$row) //行号从1开始
        {
            $row_data = [];
            foreach ($column as $item){
                switch ($item['key']) {
                    case "tax":
                        $value = $sheet->getCellByColumnAndRow($item['clo'], $row)->getFormattedValue();
                        if(strpos($value, "%") > 0) $value = (float)$value/100;
                        $row_data[$item['key']] = $value;
                        break;
                    case "num" :
                        $row_data[$item['key']] = (int)$sheet->getCellByColumnAndRow($item['clo'], $row)->getCalculatedValue(true);
                        break;
                    case "money":
                        $res  = $sheet->getCellByColumnAndRow($item['clo'], $row)->getFormattedValue();
                        $row_data[$item['key']] =  str_replace(['￥', ','], '', $res);//一般先取出结果，然后自己处理比较方便。
                        break;
                    case "time":
                        $date = $sheet->getCellByColumnAndRow($item['clo'], $row)->getValue();
                        if(!$date){
                            $row_data[$item['key']] = null;
                        }else{
                            $row_data[$item['key']] = gmdate('Y-m-d', ($date - 25569) * 24 * 3600); //gmdate返回UTC的时间
                        }
                        break;
                    default :
                        $row_data[$item['key']]= Common::trim($sheet->getCellByColumnAndRow($item['clo'], $row)->getFormattedValue());
                }
            }
            if(count($row_data) != count($format_column)) throw new ApiException(Code::EXCEL_FORMAT_ERROR);
            //空数据过滤
            $res_data[] = $row_data;
        }
        $this->filterData($res_data);
        return array_values($res_data);

//过滤空数据
    private function filterData(&$row_data)
    {
        foreach ($row_data as $key => $item){
            $is_null = false;
            foreach ($item as $iv) {
                if(!empty($iv)) {
                    $is_null = true;    break;
                }
            }
            if($is_null == false ) unset($row_data[$key]);
        }
    }