Blank array_rand() when sourcing random mp3 from directory

This is in the body of my index.php i开发者_开发知识库n root dir of site and localhost/sound/ contains a bunch of randomly named mp3 files.

<?php
$files = glob("/sound/*.mp3");
$random = array_rand($files)
?>
<embed src="<?php echo $random ?>" 
width="140" height="40" autostart="true" loop="TRUE"> 
</embed>

When I view source of the page in browser it shows

<embed src="" 
width="140" height="40" autostart="true" loop="TRUE"> 
</embed>

Ensure that glob is actually returning matches:

$files = glob("/sound/*.mp3");
if (count($files) < 1)
  die('No files found');
$random = $files[array_rand($files)];

...

You could do the same thing, but provide a fallback default:

$files = glob("/sound/*.mp3");
$random = count($files) > 1 ? $files[array_rand($files)] : 'path/to/default.mp3';

...

First, make sure you are actually getting some file names back. Note that glob() expects a path on your filesystem. The path /sound/*.mp3 should probably be something like sound/*.mp3 (i.e. relative to your PHP script) or /var/www/html/sound/*.mp3 (an absolute path to where your web files are stored).

You should put a check in your code to verify that you're getting files back. For example:

if ($files === FALSE || count($files) == 0)
{
    die('No MP3s!');
}

Second, array_rand() returns a random array key. You'll have to look up that key in the array to retrieve the corresponding value:

<embed src="<?php echo $files[$random] ?>"