Description:
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I've found that PHP finds included files (specified by 'include', 'include_once', 'require', 'require_once' functions) first in 'include_path' option, earlier than the current script file's path.

I think it's more feasible that the first search should be done in the current script file's path, rather than the current working directory specified in 'include_path' option.

If there are some included files which have same name (and not same pathes), PHP simply ignores the files who is included later in a context (or reinclude the first file when 'once' is not specified), though there may exist some cases that someone includes files which have same names, but are in the same directory in which the current script file is.

Reproduce code:
---------------
(Without touching 'include_path' option, it contains '.:/usr/share/php:/usr/share/pear' by default)
* test.php
include("config.php");
include("foo/test.php");

* config.php
echo "config.php<br>";

* foo/test.php
include("config.php");

* foo/config.php
echo "foo/config.php<br>";

Expected result:
----------------
config.php
foo/config.php

Actual result:
--------------
config.php
config.php