public function _searchDirFiles($dir, &$files, $prefix = '')
{
$d = dir($dir);
while (false !== ($file = $d->read())) {
if ($file[0] == '.') {
continue;
}
if (is_dir($dir . '/' . $file)) {
$this->_searchDirFiles($dir . '/' . $file, $files, $prefix . $file . '/');
} else {
$files[] = $prefix . $file;
}
}
$d->close();
}