Description:
------------
Even if html_errors, docref_root and docref_ext are set according to the description, no links are contained in the error messages.

Online test: http://www.tacker.org/html_errors.php
Online test source: http://www.tacker.org/html_errors.phps

Reproduce code:
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ini_set('html_errors', 'On');
ini_set('docref_root', '/php-doc/');
ini_set('docref_ext', '.html');
$test = str_replace();

Expected result:
----------------
str_replace() beeing linked to /php-doc/functions.str_replace.html

Actual result:
--------------
<br />
<b>Warning</b>:  Wrong parameter count for str_replace() in <b>/mnt/store/www/tacker.org/htdoc/html_errors.php</b> on line <b>25</b><br />