Форум АНТИЧАТ - Показать сообщение отдельно - Скрипт гостевой с антифлудом

Код:
session_start();
ob_start();

if (isset($_GET) || is_array($_GET)) extract($_GET);

                if (isset($_POST['vcode'])){
                  $valid = ($_POST['vcode'] == $_SESSION['code'])?'valid':'notvalid';
                  echo $valid;
                }

                $vcode_1 = substr(md5(uniqid(rand(0,9999))), -5);
                $vcode_2 = md5($vcode_1);
                $_SESSION['code'] = strtoupper($vcode_1);
if (isset($vimage)) {
        $check_url = (isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : $_SERVER['SCRIPT_NAME']);
        if (eregi("tmp.php", $check_url) && preg_match("/^[0-9a-z]{32}$/", $vimage)) {
                        $F = rand(3,5); $X = rand(15,40); $Y = rand(2,7);
                        $im = imagecreatefromjpeg("images/validate_bg.jpg");
                        $tcolor = imagecolorallocate($im, 40, 40, 40);
                        header("Content-type: image/jpeg");
                        imagestring ($im, $F, $X, $Y, strtoupper($vcode_1), $tcolor);
                        imagejpeg($im, '', 90);
                        imagedestroy($im);

                        }
        die();
       break;
        }

echo '<html>
<head>
<title>TEMPNAME</title>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1251">';

echo "<script language='JavaScript'>
function ValidateForm(form) {
        if (form.vcode.value==\"\") {
                alert(\"Error...\");
                return false;
        }
}
</script>";

echo '</head>

<body bgcolor="#FFFFFF" text="#000000">';
               echo '<form name="form" action="tmp.php" method="post" onSubmit="return ValidateForm(this)">';
               echo "<img src='?vimage=$vcode_2'><br><br>";
               echo '<input name="vcode" type="text"><br><br><input type="submit" value="Send"></form>';
               unset($vcode_1,$vcode_2);

echo "</body>
</html>";