使用PHP下载重命名的文件 [英] Download a renamed file with PHP

问题描述

我正在制作一个PHP脚本，下载一个名称和一个版本的文件。文件将存储在服务器上，如下所示：

  /dl/Project1/1.0.txt 
 / dl / Project1 / 1.1.txt 
 /dl/Project2/2.3.jar 
 /dl/Project2/2.3.1.jar 
  

检索这些文件的路径如下所示：

  download.php？ name = Project1& type = txt& version = 1.0 
 download.php？name = Project1& type = txt& version = 1.1 
 download.php？name = Project2& type = jar& version = 2.3 
 download.php？name = Project2& type = jar& version = 2.3.1 
  

实际下载文件时出现问题。在这个例子中，我希望前两个文件都可以作为Project1.txt下载，而我想要最后两个文件作为Project2.jar下载。如何临时重命名这些工作？

解决方案

发送一个定义文件名的头文件。

  $ filename = $ name。  。 $类型; 
 header（'Content-Description：File Transfer'）; 
 header（'Content-Type：application / octet-stream'）; 
 header（'Content-Disposition：attachment; filename ='。$ filename）; 
 header（'Content-Transfer-Encoding：binary'）; 
 header（'Expires：0'）; 
 header（'Cache-Control：must-revalidate'）; 
 header（'Pragma：public'）; 
 header（'Content-Length：'。filesize（$ file））; 
  

我附加了标题，因为你也应该发送这些。这只是一个修改示例，您可以参阅 readfile 。

I am making a PHP script that will download a file given a name and a version. The files will be stored on the server like this:

/dl/Project1/1.0.txt
/dl/Project1/1.1.txt
/dl/Project2/2.3.jar
/dl/Project2/2.3.1.jar

And the paths to retrieve such files would look like this:

download.php?name=Project1&type=txt&version=1.0
download.php?name=Project1&type=txt&version=1.1
download.php?name=Project2&type=jar&version=2.3
download.php?name=Project2&type=jar&version=2.3.1

The issue arises when actually downloading the files. In this example, I want the first two files to both download as Project1.txt, and I want the last two to download as Project2.jar. How can I rename these temporarily to allow this to work?

解决方案

Send out a header defining the file's name.

$filename = $name . "." . $type;
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename=' . $filename);
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));

I've included additional headers, since you should send out these as well. This is just a modified example of what you can see in the PHP documentation on readfile.

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