Как исправить рейтинг в коде php?

<?php
define('ROOT_DIR', dirname(__FILE__));
header("Content-type: image/png");
$file = ROOT_DIR."/rating/{$_GET['id']}.png";

if(file_exists($file))
{
    $modif= time() - @filemtime($file);
    if($modif < 86400)
    {
        readfile($file);
        exit;
    }
}
ob_start();
function show_error_image($error_text = "Error with the image!")
{
    $error_picture_width = strlen($error_text) * 7 + 12;
    $img = @imagecreatetruecolor($error_picture_width, 30) or die("Not true test data!");
    $text_color = imagecolorallocate($img, 255, 0, 0);
    imagestring($img, 3, 7, 8, $error_text, $text_color);
    header("Content-type: image/png");
    imagepng($img);
    imagedestroy($img);
    exit;
}
function subX($dbl)
{
    switch ($dbl) {
        case 1:
            return 9;
            break;
        case 2:
            return 8;
            break;
        case 3:
            return 7;
            break;
        case 4:
            return 6;
            break;
        case 5:
            return 5;
            break;
        case 6:
            return 4;
            break;
        case 7:
            return 3;
            break;
        case 8:
            return 2;
            break;
        case 9:
            return 1;
            break;
    }
}

if(strlen($_GET['id']) > 7) show_error_image("A maximum of 7 characters!");
if(!ctype_digit($_GET['id'])) show_error_image("Wrong characters in the query!");

$doc = new DOMDocument();
$doc->load("http://www.kinopoisk.ru/rating/{$_GET['id']}.xml");

$kp = $doc->getElementsByTagName('kp_rating');
$kino_rating = $kp->item(0)->nodeValue;
$kino_votes = ($kino_rating) ? $kp->item(0)->getAttribute('num_vote') : "";
$kino_votes = number_format($kino_votes);

$imdb = $doc->getElementsByTagName('imdb_rating');
$imdb_rating = $imdb->item(0)->nodeValue;
$imdb_votes = ($imdb_rating) ? $imdb->item(0)->getAttribute('num_vote') : "";
$imdb_votes = number_format($imdb_votes);

$pic = ($kino_rating > 0) ? imagecreatefrompng("img/rating.png") : imagecreatefrompng("img/kinopoisk.png");
$pic = ($imdb_rating > 0) ? imagecreatefrompng("img/rating.png") : imagecreatefrompng("img/kinopoisk.png");
$star = imagecreatefrompng("img/star.png");
$colorOne = ImageColorAllocate($pic, 46, 195, 238);
$colorTwo = ImageColorAllocate($pic, 98, 97, 97);
imagealphablending($pic, true);

($kino_rating > 10) ? $kino_rating = 10 : "";
imagettftext($pic, 30, 0, 8, 35, $colorOne, "fonts/comicbd.TTF", $kino_rating);

if($imdb_rating > 0)
{
    ($imdb_rating > 10) ? $imdb_rating = 10 : "";
    imagettftext($pic, 30, 0, 114, 35, $colorTwo, "fonts/comicbd.TTF", $imdb_rating);
}

imagesavealpha($pic, true);
imagepng($pic);
imagedestroy($pic);
$cache = ob_get_contents();
ob_end_clean();
echo $cache;
$fp = @fopen ($file, "w");
@fwrite($fp, $cache);
@fclose($fp);
?>