How to split a path properly in PHP

Question

What is the best way to do the following:

I get a path with an AJAX request

e.g. dir1/dir2/dir3/dir4

I need to present it like this on my we

Answer 1

Var 1

 /dir1/dir2/dir3/dir4/
       [1] => /dir1/dir2/dir3/
       [2] => /dir1/dir2/
       [3] => /dir1/
    )
    */

?>

Var 2 ( Links )

'.basename($str).'');
    while((array_pop($arr) and !empty($arr))){
        $out[] = ''.end($arr).'';
    };

    print_r($out);

    /*
    Array
    (
        [0] => dir4
        [1] => dir3
        [2] => dir2
        [3] => dir1
    )
    */

?>