Get last part URL with php

gistfile1.php

function uf_getLastDir($sUrl)
{
    $sPath = parse_url($sUrl, PHP_URL_PATH);   // parse URL and return only path component 
    $aPath = explode('/', trim($sPath, '/'));  // remove surrounding "/" and return parts into array
    end($aPath);                               // last element of array
    if (is_dir($sPath))                        // if path points to dir
        return current($aPath);                // return last element of array
    if (is_file($sPath))                       // if path points to file
        return prev($aPath);                   // return second to last element of array
    return false;                              // or return false
}