Description:
------------
By design, if no PHP script is present in the REQUEST_URI, built-in server 
considers using a directory index (index.php or index.html). However, PHP_SELF 
and SCRIPT_NAME server variables are not correctly filled.

For instance, if I test http://localhost:8000/hello/world, SCRIPT_NAME will be 
"/index.php" and PHP_SELF will be "/index.php/hello/world", while on Apache 
httpd, SCRIPT_NAME and PHP_SELF will be "/hello/world/index.php".

Test script:
---------------
php -S localhost:8000 router.php

router.php script :
<?php
var_dump( $_SERVER );
?>

Expected result:
----------------
Directory index should be AFTER the dir path :
"/hello/world/index.php"

Actual result:
--------------
Directory index is before the dir path :
"/index.php/hello/world"