When exporting a csv file, some long text with line breaks will be automatically wrapped, but I want it to be line wrapped within the cell

Post code

$str = "操作人,操作,修改项,修改前,修改后,操作时间\n";
$str = iconv('utf-8','gb2312',$str);
while($r=$empire->fetch($sql))
{$data[]=$r;
    $name      = '"'.getUserName($r['uid']).'"'; //中文转码
    $action  = '"'.iconv('utf-8','gb2312',str_replace(array("\n","\r",'"'),array("//","//","'"),urldecode($r['action']))).'"';
    $time    = '"'.date('Y-m-d H:i:s',$r['time']).'"';
    $old     = '"'.str_replace(array("\n","\r",'"'),array("//","//","'"),urldecode($r['old'])).'"';
    $new     = '"'.str_replace(array("\n","\r",'"'),array("//","//","'"),urldecode($r['new'])).'"';
    $pro_name= getHierarchyName($r['type_id']);
    $name  =  $name ?  $name :'已删除或禁用';
    $str .= "{$name},{$action},{$pro_name},{$old},{$new},{$time}\n"; //用引文逗号分开
}
$file_name = $file_name? $file_name:'工作组操作日志';
$filename = $file_name.'.csv'; //设置文件名
export_csv($filename,$str);

I have tried string replacement and other things. Please advise

The problem is solved. A newline character appeared in a field that should not have a newline character. It’s so painful