Problem s premennou

........function create_mail()
{
require("class.phpmailer.php");
$mail = new PHPMailer();
$mail->IsSMTP();                                     
$mail->Host = "xxx";
$mail->SMTPAuth = true;
$mail->Username = "xxx";
$mail->Password = "xxx";
$mail->From = "xxx";
$mail->AddAddress($email);
$mail->WordWrap = 50;
$mail->AddAttachment($path);

$mail->Subject = $result_mail['Predmet'];
$mail->Body = $resul_mail['Sprava'];

if(!$mail->Send())
   {
      echo "Správa nebola zaslaná.";
      echo "Nastala chyba: " . $mail->ErrorInfo;
         exit;
   }
}

function odoslat_mail()
{        SESSION_START();
   if(isSet($_POST['send_mail']) and isSet($_POST['vyber']))
      {               
      $vyber = $_POST['vyber'];
      require "config.php";
      $query = "SELECT Predmet, Sprava FROM Obsah_email WHERE 1";
      $result = mysql_query($query) or die("Chyba DB!");
      $result_mail = mysql_fetch_array($result);
      while(list($key,$email) = @each($vyber))
         {                       
      create_mail();........

$vyber = $_POST['vyber'];