blocks|key|317788|text|您可以尝试如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|317789|$file_name+=+'file.avi';
$file_url+=+'http://www.myremoteserver.com/'+.+$file_name;
header('Content-Type:+application/octet-stream');
header("Content-Transfer-Encoding:+Binary");+
header("Content-disposition:+attachment;+filename=\"".$file_name."\"");+
readfile($file_url);
exit;|code-block|syntax|javascript|317790|我刚刚测试了一下，它对我来说很有效。|317791|请注意，为了使readfile能够读取远程url，您需要启用您的fopen_wrappers。|offset|length|style|CODE|317792|entityMap|0|LINK|mutability|MUTABLE|url|http://us.php.net/manual/en/filesystem.configuration.php#ini.allow-url-fopen^0|0|0|0|7|8|W|E|W|E|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|Z|8|@$K|10|L|11|M|N]|$K|12|L|13|M|N]]|9|@$K|14|L|15|1|16]]|A|$]]|$1|O|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

You could try something like this:

<pre><code>$file_name = 'file.avi';
$file_url = 'http://www.myremoteserver.com/' . $file_name;
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary"); 
header("Content-disposition: attachment; filename=\"".$file_name."\""); 
readfile($file_url);
exit;
</code></pre>

I just tested it and it works for me.

Please note that for <code>readfile</code> to be able to read a remote url, you need to have your <a href="http://us.php.net/manual/en/filesystem.configuration.php#ini.allow-url-fopen" rel="noreferrer"><code>fopen_wrappers</code></a> enabled.

blocks|key|317812|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|317813|<?php
$FileName+=+'/var/ww/file.txt';
header('Content-disposition:+attachment;+filename="'.$FileName.'"');
readfile($FileName);|code-block|syntax|javascript|317814|关键是header()。您需要将标题与下载一起发送，它将强制在用户的浏览器中显示“保存文件”对话框。|offset|length|style|CODE|317815|entityMap^0|0|0|3|8|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Try this:

<pre><code>&lt;?php
$FileName = '/var/ww/file.txt';
header('Content-disposition: attachment; filename="'.$FileName.'"');
readfile($FileName);
</code></pre>

The key is the <code>header()</code>. You need to send the header along with the download and it will force the "Save File" dialog in the user's browser.

blocks|key|4382978|text|<?php
$FileName+=+'/var/ww/file.txt';
header('Content-disposition:+attachment;+filename="'.$FileName.'"');
readfile($FileName);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4382979|使用下面的代码。是否可以将文件名保存到您想要的位置。例如，您可以使用url：http://remoteserver.com/file.mp3代替"file.mp3“，您可以使用此脚本将文件下载为"newname.mp3”吗？|unstyled|offset|length|4382980|entityMap|0|LINK|mutability|MUTABLE|url|http://remoteserver.com/file.mp3^0|0|12|W|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@$G|S|H|T|1|U]]|A|$]]|$1|I|3|-4|5|F|7|V|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

<pre><code>&lt;?php
$FileName = '/var/ww/file.txt';
header('Content-disposition: attachment; filename="'.$FileName.'"');
readfile($FileName);
</code></pre>

using this code. is it possible to save the file name to what you want. for example you have url: <a href="http://remoteserver.com/file.mp3" rel="nofollow noreferrer">http://remoteserver.com/file.mp3</a> instead of "file.mp3" can you use this script to download the file as "newname.mp3"

blocks|key|4382991|text|测试过的download.php文件是|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4382992|function+_Download($f_location,+$f_name){
++$file+=+uniqid()+.+'.pdf';

++file_put_contents($file,file_get_contents($f_location));

++header('Content-Description:+File+Transfer');
++header('Content-Type:+application/octet-stream');
++header('Content-Length:+'+.+filesize($file));
++header('Content-Disposition:+attachment;+filename='+.+basename($f_name));

++readfile($file);
}

_Download($_GET['file'],+"file.pdf");|code-block|syntax|javascript|4382993|要下载的链接是|4382994|<a+href="download.php?file=http://url/file.pdf">+Descargar+</a>|4382995|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Tested download.php file is

<pre><code>function _Download($f_location, $f_name){
 $file = uniqid() . '.pdf';

 file_put_contents($file,file_get_contents($f_location));

 header('Content-Description: File Transfer');
 header('Content-Type: application/octet-stream');
 header('Content-Length: ' . filesize($file));
 header('Content-Disposition: attachment; filename=' . basename($f_name));

 readfile($file);
}

_Download($_GET['file'], "file.pdf");
</code></pre>

and the link to download is 

<pre><code>&lt;a href="download.php?file=http://url/file.pdf"&gt; Descargar &lt;/a&gt;
</code></pre>

blocks|key|4383001|text|<?php

++++$file_name+=+'video.flv';
++++$file_url+=+'http://www.myserver.com/secretfilename.flv';
++++header('Content-Type:+application/octet-stream');
++++header("Content-Transfer-Encoding:+Binary");+
++++header("Content-disposition:+attachment;+filename=\"".$file_name."\"");+
++++echo+file_get_contents($file_url);
++++die;

?>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4383002|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>&lt;?php

 $file_name = 'video.flv';
 $file_url = 'http://www.myserver.com/secretfilename.flv';
 header('Content-Type: application/octet-stream');
 header("Content-Transfer-Encoding: Binary"); 
 header("Content-disposition: attachment; filename=\"".$file_name."\""); 
 echo file_get_contents($file_url);
 die;

?&gt;
</code></pre>

blocks|key|317902|text|我不知道这是不是最好的方法，但我喜欢这样，简短而简单。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|317903|如果你想下载文件当你访问网址，你可以这样做|offset|length|style|BOLD|317904|<a+href="resume.pdf"+download></a>
<script>document.querySelector('a').click();</script>|code-block|syntax|javascript|317905|entityMap^0|0|4|2|C|2|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@$D|Q|E|R|F|G]|$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

I don't know this is the best way or not but I like that, short &amp; simple.

If you want to download file when you visit URL, you can do like below

<pre class="lang-html prettyprint-override"><code>&lt;a href="resume.pdf" download&gt;&lt;/a&gt;
&lt;script&gt;document.querySelector('a').click();&lt;/script&gt;
</code></pre>

blocks|key|317914|text|index.php|type|unstyled|depth|inlineStyleRanges|entityRanges|data|317915|<!doctype+html>
<html>
<head>
<meta+charset="utf-8">
<title>download</title>
</head>

<body>
++++++++<a+href="download.php?file=ID_do_arquivo">+download+</a>
</body>
</html>|code-block|syntax|javascript|317916|.htaccess|317917|Options+-Indexes
Options+%2BFollowSymlinks
deny+from+all|317918|download.php|317919|$file+=+"pdf/teste.pdf";
+if+(file_exists($file))+{
++++header('Content-Description:+File+Transfer');
++++header('Content-Type:+application/octet-stream');
++++header('Content-Disposition:+attachment;+filename='.basename($file));
++++header('Content-Transfer-Encoding:+binary');
++++header('Expires:+0');
++++header('Cache-Control:+must-revalidate,+post-check=0,+pre-check=0');
++++header('Pragma:+public');
++++header('Content-Length:+'+.+filesize($file));
++++ob_clean();
++++flush();
++++readfile($file);
++++exit();
}|317920|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

index.php

<pre><code>&lt;!doctype html&gt;
&lt;html&gt;
&lt;head&gt;
&lt;meta charset="utf-8"&gt;
&lt;title&gt;download&lt;/title&gt;
&lt;/head&gt;

&lt;body&gt;
 &lt;a href="download.php?file=ID_do_arquivo"&gt; download &lt;/a&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

.htaccess

<pre><code>Options -Indexes
Options +FollowSymlinks
deny from all
</code></pre>

download.php

<pre><code>$file = "pdf/teste.pdf";
 if (file_exists($file)) {
 header('Content-Description: File Transfer');
 header('Content-Type: application/octet-stream');
 header('Content-Disposition: attachment; filename='.basename($file));
 header('Content-Transfer-Encoding: binary');
 header('Expires: 0');
 header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
 header('Pragma: public');
 header('Content-Length: ' . filesize($file));
 ob_clean();
 flush();
 readfile($file);
 exit();
}
</code></pre>

I'm looking to add a "Download this File" function below every video on one of my sites. I need to force the user to download the file, instead of just linking to it, since that begins playing a file in the browser sometimes. The problem is, the video files are stored on a separate server. 

Any way I can force the download in PHP?

php - How to force download of a file?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我希望添加一个“下载此文件”功能下面的每个视频在我的网站之一。我需要强制用户下载文件，而不是仅仅链接到它，因为这有时会开始在浏览器中播放文件。问题是，视频文件存储在单独的服务器上。有没有办法在PHP中强制下载？

问php -如何强制下载文件？
EN

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问php -如何强制下载文件？EN