<?php
function randomize() {
$pics = glob("*.jpg");
shuffle($pics);
return $pics[0];
}
echo '<img src="/images/' . randomize() . '.jpg" alt="" />';
?>

In this case the elements are JPEG files.

vlc -I ncurses lista.m3u

This way you can use it also to see video files and dvd.

<?php
   phpinfo();
?>