translate relative url to absolute url

function relative2absolute($absolute, $relative) {
        $p = @parse_url($relative);
        if(!$p) {
         return false;
        }
        if(isset($p["scheme"])) return $relative;
        $parts=(parse_url($absolute));
        if(substr($relative,0,1)=='/') {
            $cparts = (explode("/", $relative));
            array_shift($cparts);
        } else {
            if(isset($parts['path'])){
                 $aparts=explode('/',$parts['path']);
                 array_pop($aparts);
                 $aparts=array_filter($aparts);
            } else {
                 $aparts=array();
            }
           $rparts = (explode("/", $relative));
           $cparts = array_merge($aparts, $rparts);
           foreach($cparts as $i => $part) {
                if($part == '.') {
                    unset($cparts[$i]);
                } else if($part == '..') {
                    unset($cparts[$i]);
                    unset($cparts[$i-1]);
                }
            }
        }
        $path = implode("/", $cparts);
        $url = '';
        if($parts['scheme']) {
            $url = "$parts[scheme]://";
        }
        if(isset($parts['user'])) {
            $url .= $parts['user'];
            if(isset($parts['pass'])) {
                $url .= ":".$parts['pass'];
            }
            $url .= "@";
        }
        if(isset($parts['host'])) {
            $url .= $parts['host']."/";
        }
        $url .= $path;
        return $url;
}

link : http://w-shadow.com

php sub folder scan

you can use php to scan all file in sub folder from this code

<?php
// *** requires PHP5 ***
// search for gif files (can be empty for all file)
$filter = ".gif";
// path to the directory you want to scan(can be .. to search all drive)
$directory = './';
$it = new RecursiveDirectoryIterator("$directory");
foreach(new RecursiveIteratorIterator($it) as $file)
{
  if (!((strpos(strtolower($file), $filter)) === false) || empty($filter))
  {
    $items[] = preg_replace("#\\\#", "/", $file);
  }
}
sort($items);
print_r($items);
?>

but if your server not PHP5 don't worry please see this link http://www.php.net and find class RecDir