PHP version of relative_path_calculator

relative_path_calculator.php

<?php

$path1 = 'a/b/c/d/e.png';
$path2 = 'a/b/f/g.png';

function pathfinder($path1, $path2)
{
    $exploded_path1 = explode(DIRECTORY_SEPARATOR, $path1);
    $exploded_path2 = explode(DIRECTORY_SEPARATOR, $path2);

    $intersect_array_count = count(array_intersect_assoc($exploded_path1, $exploded_path2));

    $depth = count($exploded_path1) - $intersect_array_count;

    return str_repeat('../', $depth) . implode(DIRECTORY_SEPARATOR, array_slice($exploded_path2, $intersect_array_count - 1));
}

echo pathfinder($path1, $path2);