Setting up apache to serve PHP when an MP3 file is requested

Question

I\'m working on a way to serve up MP3 files through PHP and after some help form the SO massive, I got it working here

However, that example doesn\'t appear to work

Answer 1

You could simply make it so that you have a mod_rewrite rule to run every request for music/*.mp3 through your mp3.php file.

For example, something like this

RewriteEngine on
RewriteRule ^/music/(.*\.mp3)    /music/mp3.php?file=$1 [L]

mp3.php can then pick up the requested file from $_GET['file'], but if you go with this approach I recommend you sanity check the filename, to ensure it only references a file in the desired directory.

//ensure filename just uses alphanumerics and underscore
if (preg_match('/^[a-z0-9_]+\.mp3$/i', $_GET['file']))
{
    //check file exists and serve it

    $track=$_SERVER['DOCUMENT_ROOT'].'/music/'.$_GET['file'];
    if(file_exists($track))
    {
        header("Content-Type: audio/mpeg");
        header('Content-length: ' . filesize($track));
        //insert any other required headers...

        //send data
        readfile($track);
    }
    else
    {
        //filename OK, but just not here
        header("HTTP/1.0 404 Not Found");
    }

}
else
{
    //bad request
    header("HTTP/1.0 400 Forbidden");
}