Interprets an INI file with heritage section

gistfile1.php

<?php
/**
 * Interprets an INI file with heritage section
 * 
 * @param string $filename Filename
 * @return array
 * @link https://gist.github.com/4217717
 * 
 */
function parse_ini_file_advanced($filename)
{
    $nArr = array();
    $oArr = parse_ini_file($filename, true);

    if (is_array($oArr)) {
        foreach ($oArr as $k => $v) {
            $k = preg_split('~[:]~', preg_replace('~[\s]{1,}~', null, $k));
            $t = &$nArr;
            foreach ($k as $x) {
                $t = &$t[$x];
            }
            $t = $v;
        }
    }

    return $nArr;
}