php - 用于下载的标头，文件名中带有空格

Question

如果文件名中应包含空格，如何设置正确的标题？

我试过了

header( "Content-Disposition: attachment; filename=a fielename with spaces.txt");

但这只给出了建议的字段名“a”并切断了其余部分。

Answer 1

$file_name = 'a fielename with spaces.txt';
header("Content-disposition: attachment; filename=\"".$file_name."\""); 

Answer 2

header( 'Content-Disposition: attachment; filename="a fielename with spaces.txt"');