You means your number is $num = 012345678;
and you are trying to export CSV file its exports 12345678  right..?
so now you can use this method
$num = 0123456789;
foreach($listings as $listing){
   'number'  =>  '="'.str_replace('"', '\"', $num).'"',
}

我得到了一个解决方案，并张贴在这里帮助别人。

use Maatwebsite\Excel\Concerns\WithCustomValueBinder;
use \PhpSpreadsheet\Cell\StringValueBinder

class QuestionnaireExport extends StringValueBinder implements FromCollection, WithCustomValueBinder

它做了一个技巧&导出Excel在原始格式没有删除0的最后。