Bestaat het al?

<?
    $host = "localhost";
    $user = "";
    $pass = "";
    $dbdb = "";
    
    if (!@mysql_select_db($dbdb, @mysql_connect($host, $user, $pass)))
    {
    }

     else
      {
        if ($_POST['submit'] && $_POST['email'])
          {
            $datum = date("d.m.Y H:i");
            
            $sql = "INSERT INTO email_adres (id, email) VALUES ";
            $sql .= "('', '" . $_POST['email'] . "')";
            $res = mysql_query($sql);
            
         }
      }
?>