PHP-如何使用JavaScript AJAX发送textarea值并将其输出为.txt文件以供浏览器下载？

Question

I have a textarea, text input and a button wich sends textarea and text input values (using AJAX post method) to PHP site. Now, I want PHP to output textarea value as .txt file so that it can be download via browser.

My PHP code looks like this:

$text=trim($_POST['text']);  // textarea value
$fileName=$_POST['fileName'].".txt";  // text input value
header("Content-Type: text/plain");
header('Content-Disposition: attachment; filename="'.$fileName.'"');
header("Content-Length: ".mb_strlen($text));
print($text);

Nothing happens, so can you help me please. Thanks. :)

Answer 1

Have you considered not sending the text to the server and just creating a download client-side?

This post has some useful suggestions you could try to create a download by bypassing the server completely Create a file in memory for user to download, not through server

Answer 2

Maybe you should clean the buffer

while (@ob_end_clean());
ob_start();

header("Content-Type: text/plain");
header('Content-Disposition: attachment; filename="'.$fileName.'"');
header("Content-Length: ".mb_strlen($text));
print($text);

ob_end_flush();
exit();