require_once("initcontrols/config.php");

<div>
<?php
$file = "initcontrols/header_myworks.php";
include_once($file);
echo $plHeader;?>
</div>

<?php
$ds = DIRECTORY_SEPARATOR;
$base_dir = realpath(dirname(__FILE__)  . $ds . '..') . $ds;
require_once("{$base_dir}initcontrols{$ds}config.php");
?>
<div>
<?php
$file = "{$base_dir}initcontrols{$ds}header_myworks.php";
include_once($file);
echo $plHeader;?>
</div>

C:xamppphpPEARinitcontrolsheader_myworks.php

$config['rewrite_short_tags'] = FALSE;

require_once(__DIR__."/initcontrols/config.php");