使用php创建、编写和下载txt文件

Question

$file = fopen("test.txt", "w") or die("Unable to open file!");
fwrite($file, "lorem ipsum");
fclose($file);

header("Content-Disposition: attachment; filename=\"" . basename($file) . "\"");
header("Content-Type: application/force-download");
header("Content-Length: " . filesize($file));
header("Connection: close");

文件已创建/打开并写入，但未下载。

有什么帮助吗？

Answer 1

创建一个文件后，您应该将其内容输出到浏览器，例如使用fPasstransu，因为您使用文件处理程序：

$path = "test.txt";
$file = fopen($path, "w") or die("Unable to open file!");
fwrite($file, "lorem ipsum");
//fclose($file); // do not close the file
rewind($file);   // reset file pointer so as output file from the beginning

// `basename` and `filesize` accept path to file, not file descriptor
header("Content-Disposition: attachment; filename=\"" . basename($path) . "\"");
header("Content-Type: application/force-download");
header("Content-Length: " . filesize($path));
header("Connection: close");
fpassthru($file);
exit();

Answer 2

为了让用户下载文件，您需要输出一些内容。请尝试以下代码：

$file = fopen("test.txt", "w") or die("Unable to open file!");
fwrite($file, "lorem ipsum");
fclose($file);

header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="FILENAME"');
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: test.txt');
ob_clean();
flush();
readfile('text.txt');
exit();

使用您希望用户下载的文件名更改文件名。

Answer 3

正确的做法是：

<?php

$file = "test.txt";
$txt = fopen($file, "w") or die("Unable to open file!");
fwrite($txt, "lorem ipsum");
fclose($txt);

header('Content-Description: File Transfer');
header('Content-Disposition: attachment; filename='.basename($file));
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
header("Content-Type: text/plain");
readfile($file);

?>