Description:
------------
require_once() (probably include_once() too, haven't tested) does not include files in 2 different directories when both files have the same filename (but are 2 different files in 2 different paths);

require_once() stores what is given and skips any require_once() with the same input, not matter what the location is where require_once() was called. It should store/compare the complete path of the included file, not the input.

The workaround is now by specifing the whole path;
require_once($_SERVER["DOCUMENT_ROOT"] . "/toinclude.php");


Reproduce code:
---------------
create 4 files;

/index.php:
<?
print "this is /index.php\n";
require_once("toinclude.php");
require_once("bug/index.php");
?>

/toinclude.php:
<?
print "this is /toinclude.php\n";
?>

/bug/index.php;
<?
print "this is /bug/index.php\n";
require_once("toinclude.php");
?>

/bug/toinclude.php;
<?
print "this is /bug/toinclude.php\n";
?>

Now call '/index.php'

Expected result:
----------------
this is /index.php
this is /toinclude.php
this is /bug/index.php
this is /bug/toinclude.php


Actual result:
--------------
this is /index.php
this is /toinclude.php
this is /bug/index.php