private function _getRelativePath($basePath, $absolutePath)
{
$pos = strpos($absolutePath, $basePath);
if ($pos !== false) {
$start = strlen($basePath) + $pos;
$end = strlen($absolutePath) - $start;
$path = substr($absolutePath, $start, $end);
return array(true, $path);
}
return array(false, $absolutePath);
}