按钮下载.txt文件（PHP和HTML）

问题描述

好的，我希望我的用户能够下载带有用户名的 .txt 文件。

我到处检查过，到目前为止我找不到我想要的或者甚至可能的。

给你举个例子， m试着做，这里是我的代码：

 < button type =button>下载A上的所有密钥.txt 
<？php 
 $ file ='logs / $ session-> username.txt'; 
 
 if（！file_exists（$ file））die（对不起，该文件似乎不存在。）; 
 
 $ type = filetype（$ file）; //获取日期和时间戳$ today = date（F j，Y，g​​：i a）; $ time = time（）; //发送文件头标题（Content-type：$ type）; header（Content-Disposition：attachment; filename = $ filename）; 
头（Content-Transfer-Encoding：binary）; 
 header（'Pragma：no-cache'）; 
 header（'Expires：0'）; //发送文件内容。 
 set_time_limit（0）; 
 readfile（$ file）; 
？> 
< / button> 
  

我试图让它在点击按钮时强制下载.txt文件配置为：

  $ file ='logs / $ session-> username.txt'; 
  

对不起，如果这是令人困惑和混乱的，但没有其他方式可以呈现此内容。

预先感谢！

解决方案

在一个单独的文件中，比如 download.php ：

 < php 
 $ file =logs / {$ session-> username} .txt; 
 
 if（！file_exists（$ file））die（对不起，该文件似乎不存在。）; 
 
 $ type = filetype（$ file）; 
 //获取日期和时间戳
 $ today = date（F j，Y，g​​：i a）; 
 $ time = time（）; 
 //发送文件头
 header（Content-type：$ type）; 
 header（Content-Disposition：attachment; filename = {$ session-> username} .txt）; 
头（Content-Transfer-Encoding：binary）; 
 header（'Pragma：no-cache'）; 
 header（'Expires：0'）; 
 //发送文件内容。 
 set_time_limit（0）; 
 readfile（$ file）; 
？> 
  

请注意，您必须将引号更改为双引号，因为您在 秒。因此，要扩展变量，请将第一行更改为：

  $ file =logs / {$ session->用户名}。文本; 
  

这里我认为， $ session->用户名，作为你想要引用的变量。

在HTML中有这个：

<$ p $ <> c $ c>< button type =buttononclick =location.href ='download.php'>在A .txt下载所有您的密钥< / button>

当你点击这个按钮时，它会重定向到 download.php ，它启动txt文件的下载。就如此容易。但是这需要你有两个文件。我不明白在这里需要按钮。为什么不使用这样的简单链接？

 < a href =download.php>下载所有密钥在.txt上< / a> 
  

如果您需要，您可以使用CSS来设计它。

Ok so I want to my users to be able to download a .txt file with their username on it.

I've checked everywhere, and so far I can't find what I want or if it's even possible.

To give you an example of what I'm trying to do, here is my code:

<button type="button">Download All Your Keys On A .txt
<?php
$file = 'logs/$session->username.txt';

if(!file_exists($file)) die("I'm sorry, the file doesn't seem to exist.");

$type = filetype($file); // Get a date and timestamp $today = date("F j, Y, g:i a"); $time = time(); // Send file headers header("Content-type: $type"); header("Content-Disposition: attachment;filename=$filename");
header("Content-Transfer-Encoding: binary");
header('Pragma: no-cache');
header('Expires: 0'); // Send the file contents.
set_time_limit(0);
readfile($file);
?>
</button>

I'm trying to make it so that when you click the button, it force download's the .txt file configured with:

$file = 'logs/$session->username.txt';

Sorry if this is confusing and messy, but there's no other way for me to present this.

Thanks in advance!

解决方案

Why don't you have this code in a separate file, say download.php:

<?php
    $file = "logs/{$session->username}.txt";

    if(!file_exists($file)) die("I'm sorry, the file doesn't seem to exist.");

    $type = filetype($file);
    // Get a date and timestamp
    $today = date("F j, Y, g:i a");
    $time = time();
    // Send file headers
    header("Content-type: $type");
    header("Content-Disposition: attachment;filename={$session->username}.txt");
    header("Content-Transfer-Encoding: binary");
    header('Pragma: no-cache');
    header('Expires: 0');
    // Send the file contents.
    set_time_limit(0);
    readfile($file);
?>

Please note that you have to change the quotes to double quotes, as you use a variable inside the 's. So, to expand the variable, change the first line to:

$file = "logs/{$session->username}.txt";

Here I consider, $session->username, as the variable you are trying to refer.

And have this in the HTML:

<button type="button" onclick="location.href='download.php'">Download All Your Keys On A .txt</button>

And when you click on this button, it redirects to the download.php, that initiates a download of the txt file. As simple as that. But this requires you to have two files. And I don't understand the need for a button here. Why not just use a simple link like this?

<a href="download.php">Download All Your Keys On A .txt</a>

And if you need, you can style it using CSS.

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