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Editorial Team
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Asked: 2026-05-28T06:22:17+00:00

I am making a PHP script that will download a file given a name

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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?

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1 Answer

  1. Editorial Team

    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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