Show current folder:
<?php
$path_dirty = $_SERVER['DOCUMENT_ROOT'].$_SERVER['REQUEST_URI'];
$path = preg_replace('/[\/\/]+/', '/', $path_dirty);
echo $path;
?>
<?php
$path_dirty = $_SERVER['DOCUMENT_ROOT'].$_SERVER['REQUEST_URI'];
$path = preg_replace('/[\/\/]+/', '/', $path_dirty);
echo $path;
?>