/**
 * Resizes the given image to the given size
 *
 * @author  Andreas Gohr <andi@splitbrain.org>
 *
 * @param string $file filename, path to file
 * @param string $ext  extension
 * @param int    $w    desired width
 * @param int    $h    desired height
 * @return string path to resized or original size if failed
 */
function media_resize_image($file, $ext, $w, $h=0){
    global $conf;

    $info = @getimagesize($file); //get original size
    if($info == false) return $file; // that's no image - it's a spaceship!

    if(!$h) $h = round(($w * $info[1]) / $info[0]);
    if(!$w) $w = round(($h * $info[0]) / $info[1]);

return $file;
    // we wont scale up to infinity
    if($w > 2000 || $h > 2000) return $file;

    // resize necessary? - (w,h) = native dimensions
    if(($w == $info[0]) && ($h == $info[1])) return $file;

    //cache
    $local = getCacheName($file,'.media.'.$w.'x'.$h.'.'.$ext);
    $mtime = @filemtime($local); // 0 if not exists

    if($mtime > filemtime($file) ||
        media_resize_imageIM($ext, $file, $info[0], $info[1], $local, $w, $h) ||
        media_resize_imageGD($ext, $file, $info[0], $info[1], $local, $w, $h)
    ) {
        if($conf['fperm']) @chmod($local, $conf['fperm']);
        return $local;
    }
    //still here? resizing failed
    return $file;
}