how to extract the parent directory name from a path

For Example let the path be,

$path = "protected/musics/composer/album/song.mp3";
I can extract the file name with the use of basename() function.
$path = basename($path, ".mp3");

Also I want to extract the last two directory names in a variable
example
$composer_name = composer //(extracted from the path $path);
$album_name = album //(extracted from the path $path)

Could you please someone help me out of this? Thanks in advance.

 

<?php

$path = "protected/musics/composer/album/song.mp3";

//a more effective way to get the actual filename, although not using it, I included it for your future needs.
$filename = pathinfo($path, PATHINFO_BASENAME);

$directory_parts = explode("/", dirname($path));

$composer_name = $directory_parts[2];
$album_name = end($directory_parts);

?>

PHP:

 

thank u so much danx10 it works. It may be a silly question but I'm a newbie to PHP.