تابع JPath::clean در جوملا

clean($path, $ds=DS)

libraries/joomla/filesystem/path.php

jimport( 'joomla.filesystem.path' );

function clean($path, $ds=DS)
{
        $path = trim($path);
 
        if (empty($path)) {
                $path = JPATH_ROOT;
        } else {
                // Remove double slashes and backslahses and convert all slashes and backslashes to DS
                $path = preg_replace('#[/\\\\]+#', $ds, $path);
        }
 
        return $path;
}