Automatically generate playlist with php

I generate a playlist with following script:

   <?php 
$dir        = './music';
$url        = 'music';

header('Content-type: text/xml');
echo '<?xml version="1.0" encoding="utf-8"?>' . "\n";
echo '<playlist>';
if (is_dir($dir)) {
    $dp = opendir($dir);
    while (false !== ($file = readdir($dp))){       
        if ('mp3'==strtolower(substr($file, -3))) {                开发者_开发技巧     
            printf('<sound src="%s/%s" stream="true" soundbuffer="8">%s</sound>', $url, $file, str_replace('_', ' ', substr($file, 0, -4)));
            echo "\n";
        }        
    }
    closedir($dp);
}
echo '</playlist>';

How do I get the artist and length from each mp3 file?

Thanks in advance

You need to parse the file and extract the data. It can't give you any more info as you haven't indicated the ID3 version (and there are several). Wikipedia has information on the diffrences between ID3v1 and v2

A better option would be to use a library, something like ID3 or getID3

Have a look at this library.

http://getid3.sourceforge.net/

That will get you the artist and the title as well as length.

Take a look at this site also

http://www.refdev.com/free_scripts/PHP/Audio_Management/

You can also use this function here to read mp3 id3 tags:

http://www.barattalo.it/2010/02/22/reading-mp3-informations-with-php-id3-tags/